Page 2 - Wichtige Sicherheitshinweise; ii
Wichtige Sicherheitshinweise 1. Bitte lesen Sie sich diese Hinweise sorgfältig durch. 2. Heben Sie diese Anleitung für den spätern Gebrauch auf. 3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Vervenden Sie keine Flüssig- oder Aerosolreiniger. Am besten dient ein angefeuchtetes Tuch zu...
Page 3 - Limited Warranty
WARRANTIES EXCLUSIVE IF THE D-LINK PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, THE CUSTOMER'S SOLE REMEDY SHALL BE, AT D-LINK'S OPTION, REPAIR OR REPLACEMENT. THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, EITHER IN FACT OR BY OPER...
Page 4 - Copyright Statement; iv
D-Link Offices for Registration and Warranty Service The product's Registration Card, provided at the back of this manual, must be sent to a D-Link office. To obtain an RMA number for warranty service as to a hardware product, or to obtain warranty service as to a software product, contact the D-Lin...
Page 7 - Table of Contents; vii
Table of Contents Introduction .......................................................................................................................................10 Layer 3 Switching ....................................................................................................................
Page 8 - viii
Internet Protocols ............................................................................................................................46 Packet Headers ................................................................................................................................50 The Doma...
Page 9 - ix
Runtime Switching Software Default Settings................................................................................... 266 Understanding and Troubleshooting the Spanning Tree Protocol...................................................... 267 Blocking State ......................................
Page 10 - NTRODUCTION; Layer 3 Switching
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 1 I NTRODUCTION This section describes the Layer 3 functionality and Layer 2 and Layer 3 features of the DES-3326. Some background information about Ethernet/Fast Ethernet, Gigabit Ethernet, and switching technology is presented. This is intended fo...
Page 11 - The Functions of a Layer 3 Switch; Features; Ports; Performance Features; Layer 2 Features
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The Functions of a Layer 3 Switch Traditional routers, once the core components of large networks, became an obstacle to the migration toward next-generation networks. Attempts to make software-based routers forward packets more quickly were inadequ...
Page 12 - Layer 3 Switch Features
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • Store and forward switching scheme. • Full and half-duplex for both 10Mbps and 100Mbps connections. The front-port Gigabit Ethernet module operates at full duplex only. Full duplex allows the switch port to simultaneously transmit and receive data...
Page 13 - Traffic Classification and Prioritization
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • Hardware-based Layer 3 IP switching. • IP packet forwarding rate of 6.6 Mpps. • 2K active IP address entry table per device. • Supports RIP – (Routing Information Protocol) version I and II. • Supports OSPF − (Open Shortest Path First) • Supports ...
Page 14 - IP filtering on the management interface.; Optional Redundant Power Supply; Fast Ethernet Technology
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 802.1p MIB (RFC 2674). RIP MIB v2 (RFC 1724). • Supports Web-based management. • TFTP support. • BOOTP support. • BOOTP Relay Agent. • IP filtering on the management interface. • DHCP Client support. • DHCP Relay Agent. • DNS Relay Agent. • Password...
Page 15 - NPACKING AND; Unpacking; Desktop or Shelf Installation
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 2 U NPACKING AND S ETUP This chapter provides unpacking and setup information for the Switch. Unpacking Open the shipping carton of the Switch and carefully unpack its contents. The carton should contain the following items: ♦ One DES-3326 24-port F...
Page 16 - Figure 2-1. Installing rubber feet for desktop installation; Rack Installation; Figure 2- 2A. Attaching the mounting brackets to the switch
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 2-1. Installing rubber feet for desktop installation Rack Installation The DES-3326 can be mounted in an EIA standard-sized, 19-inch rack, which can be placed in a wiring closet with other equipment. To install, attach the mounting brackets o...
Page 17 - Power on; Power Failure
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Power on The DES-3326 switch can be used with AC power supply 100-240 VAC, 50 - 60 Hz. The power switch is located at the rear of the unit adjacent to the AC power connector and the system fan. The switch’s power supply will adjust to the local powe...
Page 18 - DENTIFYING; Front Panel; Figure 3-1. Front panel view of the Switch; LED; Rear Panel; Figure 3-2. Rear panel view of the Switch
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 3 I DENTIFYING E XTERNAL C OMPONENTS This chapter describes the front panel, rear panel, optional plug-in modules, and LED indicators of the DES-3326. Front Panel The front panel of the Switch consists of LED indicators, an RS-232 communication port...
Page 19 - Side Panels; Figure 3-4. Side panel views of the Switch; The system; Optional Plug-in Modules
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide ♦ The AC power connector is a standard three-pronged connector that supports the power cord. Plug-in the female connector of the provided power cord into this socket, and the male side of the cord into a power outlet. Supported input voltages range ...
Page 20 - Connects to 1000BASE-SX devices at full duplex.; Connects to 1000BASE-LX devices at full duplex.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 1000BASE-SX Fiber Module Figure 3-6. 1000BASE-SX two-port module ♦ Front-panel module. ♦ Connects to 1000BASE-SX devices at full duplex. ♦ Allows connections using multi-mode fiber optic cable in the following configurations: 62.5 µ m 62.5 µ m 50 µ ...
Page 21 - GBIC Two-Port Module; Connects to GBIC devices at full duplex only.; LED Indicators; Power
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide GBIC Two-Port Module Figure 3-8. GBIC two-port module ♦ Front-panel module. ♦ Connects to GBIC devices at full duplex only. ♦ Allows multi-mode fiber optic connections of up to 550 m (SX and LX) and single-mode fiber optic connections of up to 5 km ...
Page 22 - ONNECTING; Switch to End Node; Figure 4-1. Switch connected to an End Node; The 100 LED indicator comes; Switch to Hub or Switch
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 4 C ONNECTING T HE S WITCH This chapter describes how to connect the DES 3326 to your Fast Ethernet network. Switch to End Node End nodes include PCs outfitted with a 10, 100 or 10/100 Mbps RJ-45 Ethernet/Fast Ethernet Network Interface Card (NIC) a...
Page 23 - cable; 00 LED speed indicator is
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide ♦ A 10BASE-T hub or switch can be connected to the Switch via a two-pair Category 3, 4 or 5 UTP/STP straight cable. ♦ A 100BASE-TX hub or switch can be connected to the Switch via a two-pair Category 5e UTP/STP straight cable. If the other switch or...
Page 24 - WITCH; Local Console Management; “Using the Console Interface”
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 5 S WITCH M ANAGEMENT AND O PERATING C ONCEPTS This chapter discusses many of the concepts and features used to manage the switch, as well as the concepts necessary for the user to understand the functioning of the switch. Further, this chapter expl...
Page 25 - Flow; IP Addresses and SNMP Community Names
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • Flow Control None Make sure the terminal or PC you are using to make this connection is configured to match these settings. If you are having problems making this connection on a PC, make sure the emulation is set to VT-100. If you still don’t see...
Page 26 - Traps; This trap signifies that someone has tried to logon to the switch
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide In addition, you can also set an IP Address for a gateway router. This becomes necessary when the network management station is located on a different IP network from the Switch, making it necessary for management packets to go through a router to r...
Page 27 - SNMP; SNMP performs the following functions:; Authentication; Remote Management Setup; Cold Start
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide SNMP The Simple Network Management Protocol (SNMP) is an OSI layer 7 (the application layer) protocol for remotely monitoring and configuring network devices. SNMP enables network management stations to read and modify the settings of gateways, rout...
Page 28 - Authentication Failure; This trap signifies that someone has tried to logon to the; Topology Change; A Topology Change trap is sent by the Switch when any of its; Link Change Event; This trap is sent whenever the link of a port changes from link; Port Partition; This trap is sent whenever the port reaches the; MIBs
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • Authentication Failure This trap signifies that someone has tried to logon to the switch using an invalid SNMP community string. The switch automatically stores the source IP address of the unauthorized user. • Topology Change A Topology Change tr...
Page 29 - MAC Address Aging Time; Static forwarding entries are not affected by the aging time.; Filtering; Some filtering is done automatically by the switch:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide transmitted to all ports, are transmitted to the destination port only. Example: if Port 1 receives a packet destined for a station on Port 2, the Switch transmits that packet through Port 2 only, and transmits nothing through the other ports. This ...
Page 30 - Spanning Tree; Switch; Global; or; VLAN; level; ameter Description Default
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide another can be filtered from the network. The entry may specified as a source, a destination, or both (switch must be in IP Routing mode). Spanning Tree The IEEE 802.1D Spanning Tree Protocol allows for the blocking of links between switches that fo...
Page 31 - Table 5-1. STP Parameters – Switch Level; Table 5-2. STP Parameters – Port Group Level; Bridge Protocol Data Units
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide BPDU that may return the port to the blocking state. Table 5-1. STP Parameters – Switch Level The following are the user-configurable STP parameters for the port or port group level: Variable Description Default Value Port Priority A relative priori...
Page 32 - Creating a Stable STP Topology; A port transitions from one state to another as follows:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • A designated switch is selected. This is the switch closest to the root switch through which packets will be forwarded to the root. • A port for each switch is selected. This is the port providing the best path from the switch to the root switch. ...
Page 33 - Feature Default
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • From forwarding to disabled • From disabled to blocking Figure 5-3. STP Port State Transitions When STP is enabled, every port on every switch in the network goes through the blocking state and then transitions through the states of listening and ...
Page 34 - User-Changeable STA Parameters
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide User-Changeable STA Parameters The factory default setting should cover the majority of installations. However, it is advisable to keep the default settings as set at the factory; unless, it is absolutely necessary. The user changeable parameters in...
Page 35 - Figure 5-4. Before Applying the STA Rules; In this example, only the default STP values are used.; Figure 5-6. After Applying the STA Rules; Link Aggregation
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 5-4. Before Applying the STA Rules In this example, only the default STP values are used. Figure 5-6. After Applying the STA Rules The switch with the lowest Bridge ID (switch C) was elected the root bridge, and the ports were selected to giv...
Page 36 - designated as the; master port
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide designated as the master port of the group. Since all members of the link aggregation group must be configured to operate in the same manner, the configuration of the master port is applied to all members of the link aggregation group. Thus, when co...
Page 37 - VLANs; Notes About VLANs on the DES-3326; Some relevant terms:; Q VLAN Packet Forwarding
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide VLANs A VLAN is a collection of end nodes grouped by logic rather than physical location. End nodes that frequently communicate with each other are assigned to the same VLAN, regardless of where they are located physically on the network. Logically,...
Page 39 - Port VLAN ID; Q devices are referred to as
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The EtherType and VLAN ID are inserted after the MAC source address, but before the original EtherType/Length or Logical Link Control. Because the packet is now a bit longer than it was originally, the Cyclic Redundancy Check (CRC) must be recalcula...
Page 40 - Tagging and Untagging; tagging; Ingress Filtering; ingress port; VLANs in Layer 2 Only Mode; Layer 2 Only
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide not? If the transmitting port is connected to a tag-unaware device, the packet should be untagged. If the transmitting port is connected to a tag-aware device, the packet should be tagged. Tagging and Untagging Every port on an 802.1Q compliant swit...
Page 41 - IP Addressing and Subnetting; – a portion of a network sharing a particular network address.; IP Addresses
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Layer 3-Based VLANs Layer 3-based VLANs use network-layer addresses (subnet address for TCP/IP) to determine VLAN membership. These VLANs are based on layer 3 information, but this does not constitute a ‘routing’ function. The DES-3326 allows an IP ...
Page 42 - The dots are included to make the numbers easier to read.; Table 5-4. Binary to Decimal Conversion; power (any number raised to the 0; Address Classes
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide address easier to read. A computer sees an IP address not as four decimal numbers, but as a long string of binary digits (32 binary digits or 32 bits, IP addresses are 32-bit addresses). The three IP addresses in the example above, written in binary...
Page 43 - Class D addresses are reserved for multicasting.; Subnet Masking; Class A IP address; Calculating the Number of Subnets and Nodes; To calculate the number of subnets and nodes, use the formula (2
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Class D addresses are reserved for multicasting. Class E Addresses are reserved for future use. They are not used for node addresses. The part of the IP address that belongs to the network is the part that is ‘hidden’ by the ‘1’s in the subnet mask....
Page 44 - Classless InterDomain Routing – CIDR
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide This example uses an 11-bit subnet mask. (There are 3 additional bits added to the default Class A subnet mask). So the number of subnets is: 2 3 – 2 = 8 – 2 = 6 Subnets of all “0”s and all “1”s are not allowed, so 2 subnets are subtracted from the ...
Page 45 - Setting up IP Interfaces; An example is presented below:; Table 5-8. VLAN Example – Assigned Ports
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide # of Bits Subnet Mask CIDR Notation # of Subnets # of Hosts Total Hosts 2 255.255.192 /18 2 16382 32764 3 255.255.224.0 /19 6 8190 49140 4 255.255.240.0 /20 14 4094 57316 5 255.255.248.0 /21 30 2046 61380 6 255.255.252.0 /22 62 1022 63364 7 255.255....
Page 46 - Table 5-9. VLAN Example – Assigned IP Addresses; Internet Protocols
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide VLAN Name VID Network Address IP Address System (default) 1 10.32.0.0 10.32.0.1 Engineering 2 10.64.0.0 10.64.0.1 Marketing 3 10.96.0.0 10.96.0.1 Finance 4 10.128.0.0 10.128.0.1 Sales 5 10.160.0.0 10.160.0.1 Backbone 6 10.192.0.0 10.192.0.1 Table 5-...
Page 47 - Protocol Layering; Figure 5-11. OSI Seven Layer Network Model
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Protocol Layering The Internet Protocol (IP) divides the tasks necessary to route and forward packets across networks by using a layered approach. Each layer has clearly defined tasks, protocol, and interfaces for communicating with adjacent layers,...
Page 48 - Layer 1
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 5-12. The Protocol Stack Between two protocol stacks, members of the same layer are known as peers and communicate by well-known (open and published) protocols. Within a protocol stack, adjacent layers communicate by an internal interface. Th...
Page 49 - Layer 3
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Layer 3 Commonly referred to as the routing layer, this layer provides logical partitioning of networks (subnetting), scalability, security, and Quality of Service (QoS). The backbone of the Internet is built using Layer 3 functions. IP is the premi...
Page 50 - Packet Headers; TCP
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Because these functions are required by a large number of applications, they are grouped into a single protocol, rather than being the part of the specifications for just sending e-mail. TCP is then a library of routines that application software ca...
Page 51 - IP
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 5-13. TCP Packet Header When packets have been successfully received, TCP sends an acknowledgement. This is simply a packet that has the acknowledgement number field filled in. An acknowledgement number of 1000 indicates that all of the data ...
Page 52 - Ethernet
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 5-14. IP Packet Header The flags and fragment offset are used to keep track of packets that must be divided among several smaller packets to cross networks for which they are too large. The Time-to-Live (TTL) is the number of gateways the pac...
Page 53 - TCP and UDP Well-Known Ports; Internet; UDP and ICMP
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide When a packet is received, the headers are removed. The Ethernet Network Interface Card (NIC) removes the Ethernet header and checks the checksum. It then looks at the type code. If the type code is for IP, the packet is given to IP. IP then removes...
Page 54 - The Domain Name System; For two DNS servers to communicate across different subnets, the; DNS Relay; be used. The DNS servers are identified by IP addresses.; Mapping Domain Names to Addresses
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide to determine the remote computer’s address before a connection can be made. A designated computer on the network will contain a database of computer names and their corresponding IP and MAC addresses. The user’s computer will send a query to the nam...
Page 55 - Domain Name Resolution; DHCP Servers; For two DHCP servers to communicate across different subnets, the; IP Routing
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Domain Name Resolution The domain name system can be used by contacting the name servers one at a time, or by asking the domain name system to do the complete name translation. The client makes a query containing the name, the type of answer require...
Page 56 - Packet Fragmentation and Reassembly
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide For IP to work, the local system must be attached to a network. It is safe to assume that any system on this network can send packets to any other system, but when packets must cross other networks to reach a destination on a remote network, these p...
Page 57 - ARP; Multicast Groups; Some of the reserved IP multicast addresses are as follows:; Address Assignment; All Systems on this subnet
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide ARP The Address Resolution Protocol (ARP) determines the MAC address and IP address correspondence for a network device. A local computer will maintain an ARP cache that is a table of MAC addresses and the corresponding IP addresses. Before a connec...
Page 58 - through; Internet Group Management Protocol (IGMP)
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 224.0.0.2 All Routers on this subnet 224.0.0.3 Unassigned 224.0.0.4 DVMRP Routers 224.0.0.5 OSPF IGP Routers 224.0.0.6 OSPF IGP Designated Routers 224.0.0.7 ST Routers 224.0.0.8 ST Hosts 224.0.0.9 All RIP2 Routers 224.0.0.10 All IGRP Routers 224.0.0...
Page 59 - IGMP Versions 1 and 2; The IGMP Type codes are shown below:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide IGMP Versions 1 and 2 Users that want to receive multicast packets need to be able to join and leave multicast groups. This is accomplished using IGMP. Figure 5-18. IGMP Message Format The IGMP Type codes are shown below: Type Meaning 0x11 Membershi...
Page 60 - Multicast Routing Algorithms
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The transition states a host will go through to join or leave a multicast group are shown in the diagram below. Figure 5-19. IGMP State Transitions Multicast Routing Algorithms An algorithm is not a program. An algorithm is a statement of how a prob...
Page 62 - Multicast Routing Protocols; Distance Vector Multicast Routing Protocol (DVMRP); Routing Protocols
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Multicast Routing Protocols This section contains an overview of two multicast routing protocols – Distance Vector Multicast Routing Protocol (DVMRP), and Protocol Independent Multicast-Dense Mode (PIM-DM). The most commonly used routing protocol (n...
Page 63 - RIP Version 1 Message Format
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Every 30 seconds, a router running RIP broadcasts a routing update containing a set of pairs of network addresses and a distance (represented by the number of hops or routers between the advertising router and the remote network). So, the vector is ...
Page 65 - RIP 1 Message
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The COMMAND field specifies an operation according the following table: Command Meaning 1 Request for partial or full routing information 2 Response containing network-distance pairs from sender’s routing table 3 Turn on trace mode (obsolete) 4 Turn...
Page 66 - Border Routers
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 5-21. RIP Message Format RIP version 2 also adds a 16-bit route tag that is retained and sent with router updates. It can be used to identify the origin of the route. Because the version number in RIP2 occupies the same octet as in RIP1, both...
Page 67 - The Link-State Algorithm; calculate a Shortest Path Tree to all destinations; The Shortest Path Algorithm
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The Link-State Algorithm An OSPF router uses a link-state algorithm to build a shortest path tree to all destinations known to the router. The following is a simplified description of the algorithm’s steps: 1. When OSPF is started, or when a change ...
Page 68 - Figure 5-22. Constructing a Shortest Path Tree; Figure 5-23. Constructing a Shortest Path Tree
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 192.128.11.0 128.213.0.0 222.211.10.0 Router A Router B Router C Router D Figure 5-22. Constructing a Shortest Path Tree Router A Router B Router C Router D 128.213.0.0 192.213.11.0 222.211.10.0 0 10 10 5 5 10 10 Figure 5-23. Constructing a Shortest...
Page 69 - Areas and Border Routers; Router Link-State Updates
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Router A Router B Router C 128.213.0.0 192.213.11.0 222.211.10.0 0 10 10 5 10 Figure 5-24. Constructing a Shortest Path Tree - Completed Note that this shortest path tree is only from the viewpoint of Router A. The cost of the link from Router B to ...
Page 70 - OSPF Authentication; There are two other authentication methods; Simple Password Authentication; also
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • Summary Link-State Updates – issued by Border Routers and describe links to networks outside the area but within the Autonomous System (AS). • Network Link-State Updates – issued by multi-access areas that have more than one attached router. One r...
Page 71 - Virtual Links; Area ID
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The backbone is at the center of all other areas − all areas of the network have a physical (or virtual) connection to the backbone through a router. OSPF allows routing information to be distributed by forwarding it into area 0, from which the info...
Page 72 - packets in order to become neighbors.; Adjacencies; No information has been received from any router on the segment.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • Stub Area Flag − any two routers also have to have the same stub area flag in their Hello packets in order to become neighbors. Adjacencies Adjacent routers go beyond the simple Hello exchange and participate in the link-state database exchange pr...
Page 73 - Adjacencies on Point-to-Point Interfaces
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Adjacencies on Point-to-Point Interfaces OSPF Routers that are linked using point-to-point interfaces (such as serial links) will always form adjacencies. The concepts of DR and BDR are unnecessary. OSPF Packet Formats All OSPF packet types begin wi...
Page 74 - Field; The Hello Packet
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Field Description Version No. The OSPF version number Type The OSPF packet type. The OSPF packet types are as follows: Type Description 1 Hello 2 Database Description 3 Link-State Request 4 Link-State Update 5 Link-State Acknowledgment Packet Length...
Page 75 - Hello Packet
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The format of the Hello packet is shown below: Hello Packet 1 Packet Length Router ID Area ID Version No. Checksum Authentication Type Authentication Authentication Network Mask Hello Interval Options Router Priority Router Dead Interval Designated ...
Page 76 - The Database Description Packet; Database Description Packet; Figure 5-27. Database Description Packet
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Table 5-14. Hello Packet The Database Description Packet Database Description packets are OSPF packet type 2. These packets are exchanged when an adjacency is being initialized. They describe the contents of the topological database. Multiple packet...
Page 77 - The Link-State Request Packet; The format of the Link-State Request packet is shown below:; The Link-State Update Packet; The format of the Link-State Update packet is shown below:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The Link-State Request Packet Link-State Request packets are OSPF packet type 3. After exchanging Database Description packets with a neighboring router, a router may find that parts of its topological database are out of date. The Link-State Reques...
Page 78 - Link-State Update Packet; The Link-State Acknowledgment Packet; The format of the Link-State Acknowledgment packet is shown below:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Version No. Packet Length Router ID Area ID Authentication Type Authentication Authentication Checksum Link-State Update Packet 4 Number of Advertisements Link-State Advertisements ... Figure 5-30. Link-State Update Packet The body of the Link-State...
Page 79 - Link-State Advertisement Formats; Router Links Advertisements; The Link State Advertisement Header; The format of the Link State Advertisement Header is shown below:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Each acknowledged link-state advertisement is described by its link-state advertisement header. It contains all the information required to uniquely identify both the advertisement and the advertisement’s current instance. Link-State Advertisement F...
Page 81 - Routers Links Advertisements; Figure 5-33. Routers Links Advertisement; V – bit; Table 5-17. Routers Links Advertisement
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Link-State Age Options Link-State Type Link-State ID Advertising Router Link-State Sequence Number Link-State Checksum Length Routers Links Advertisements Reserved Reserved Number of Links Link ID Link Data Type No. Of TOS TOS 0 Metric TOS Metric .....
Page 83 - Network Links Advertisements; Network Link Advertisements; Figure 5-34. Network Link Advertisement
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Field Description TOS IP Type of Service that this metric refers to. Metric The cost of using this outbound router link, for traffic of the specified TOS. Table 5-19. Routers Links Advertisement − Continued Network Links Advertisements Network links...
Page 84 - Summary Link Advertisements; Figure 5-35. Summary Link Advertisement; Network
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Summary Link Advertisements Summary link advertisements are Type 3 and 4 link state advertisements. These advertisements are originated by Area Border routers. A separate summary link advertisement is made for each destination known to the router, t...
Page 85 - Autonomous Systems External Link Advertisements; AS External Link Advertisements; Figure 5-36. AS External Link Advertisement
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Table 5-21. Summary Link Advertisement Autonomous Systems External Link Advertisements Autonomous Systems (AS) link advertisements are Type 5 link state advertisements. These advertisements are originated by AS boundary routers. A separate advertise...
Page 86 - External Route Tag; Table 5-21. AS External System Advertisement
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide External Route Tag A 32-bit field attached to each external route. This is not used by the OSPF protocol itself. Table 5-21. AS External System Advertisement 86
Page 87 - ONFIGURING THE; reloaded when the switch is rebooted.; Before You Start; be developed and entered statically into the DES-3326.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 6 C ONFIGURING THE S WITCH U SING THE C ONSOLE I NTERFACE The DES-3326 supports a console management interface that allows the user to connect to the switch’s management agent via a serial port and a terminal or a computer running a terminal emulati...
Page 88 - VLAN Layout
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide function as a layer 2 VLAN and would require an external router to connect to the rest of the network. 6. Develop a policy scheme. Some subnets will have a greater need for multicasting bandwidth, for example. A policy is a mechanism to alter the no...
Page 89 - Connecting to the Switch; angle brackets; UPPERCASE; First Time Connecting To The Switch; Press Ctrl+R to refresh the screen. This command can be used at any
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Connecting to the Switch The console interface is used by connecting the Switch to a VT100-compatible terminal or a computer running an ordinary terminal emulator program (e.g., the HyperTerminal program included with the Windows operating system) u...
Page 90 - initially; and; Creating User Accounts; To create a new user account, highlight; Setup User Accounts; from the; Main Menu; and press; Enter
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-1. Initial Console screen The factory default Username is “admin”, there is no factory default password. Enter “admin” for the Username and leave the Password field blank to access the console initially Enter the factory default username (“...
Page 91 - User Accounts Management; Add
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-3. Main Menu Figure 6-4. Setup User Accounts Menu User Accounts Management From the Main Menu , highlight S etup User Accounts and press Enter , then the Setup User Accounts menu appears. 1. Toggle the Action field to Add using the space ba...
Page 92 - There are three levels of user privileges:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Root, User+ and Normal User Privileges There are three levels of user privileges: Root and User+, and User . Switch Configuration Privilege Management Root User+ User Configuration Yes Read Only Read Only Network Monitoring Yes Read Only Read Only C...
Page 93 - Saving Changes; To retain any configuration changes permanently, highlight; Save Changes
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Saving Changes Selecting APPLY from a console menu makes the configuration effective for the current session only. The configuration data will be lost if the switch is restarted. To make the configuration effective after a switch restart, select Sav...
Page 94 - Loading Factory Defaults; To log in once you have created a registered user, from the
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Loading Factory Defaults Loading the factory defaults returns the switch’s configuration to the factory default values. This will clear all settings and restore them to their initial values listed in the appendix. Figure 6-7. Main Menu Highlight Reb...
Page 95 - Updating or Deleting User Accounts; To update or delete a user password:; Viewing Current User Accounts; To view the current user accounts
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 3. The Main Menu screen will be displayed based on your access level or privilege. Updating or Deleting User Accounts To update or delete a user password: Choose Setup User Accounts from the Main Menu . The following Setup User Accounts menu appears...
Page 96 - Figure 6-10. Setup User Accounts screen; Deleting a User Account; To delete a user account; Figure 6-11. Setup User Accounts screen; Delete
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Highlight Setup User Accounts from the Main Menu . The current user accounts can be read from following screen: Figure 6-10. Setup User Accounts screen Deleting a User Account To delete a user account : Figure 6-11. Setup User Accounts screen 1. Tog...
Page 97 - Setting Up The Switch; Basic Setup; Figure 6-12. Main Menu – Switch Information; Switch Information
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Setting Up The Switch Basic Setup This section will help prepare the Switch user by describing the Switch Information , IP Setup , Remote Management Setup , Configure Ports , Serial Port Settings and Switch Settings menus. Figure 6-12. Main Menu – S...
Page 98 - To set the switch’s IP address:; Figure 6-14. Remote Management Setup menu; Manual
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Remote Management Setup Configuring the Switch’s IP Address The BOOTP and DHCP Server options for assigning the switch an IP address and subnet mask are only available when the switch is in Layer 2 Only mode. The IP Routing mode requires a manual en...
Page 99 - Get IP From; SNMP Settings; To setup the switch for remote management:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The Get IP From options are: • BOOTP – The switch will send out a BOOTP broadcast request when it is powered up. The BOOTP protocol allows IP addresses, network masks, and default gateways to be assigned by a central BOOTP server. If this option is ...
Page 100 - Figure 6-15. Remote Management Setup menu; Setting Up Trap Receivers; Figure 6-16. Setup Trap Recipients menu; Enabled
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-15. Remote Management Setup menu Management stations are computers on the network that will be used to manage the switch. You can limit the number of possible management stations by entering up to three IP addresses in the Management Statio...
Page 101 - Configure Ports
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Configure Ports Highlight Configure Ports from the Main Menu and press Enter : Figure 6-17. Configure Ports Screen Toggle the View Ports field, using the space bar, to view the configuration of either ports 1 through 12 or ports 13 through 24. To co...
Page 102 - Parameter Description; Serial Port Settings; erial Port Settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Parameter Description View Ports: < 1 to 12 > Toggle the View Ports field, using the space bar, to view the configuration of either ports 1 through 12 or ports 13 through 24. State:< Enabled > Toggle the State field to either Enable or D...
Page 103 - Figure 6-18. Serial Port Settings screen; Console; Console Settings; Parameter Description; mins; SLIP Settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-18. Serial Port Settings screen Toggle the Serial port setting field to select either the Console or SLIP protocol. The following fields can then be set: Console Settings Parameter Description Baud Rate Displays the serial bit rate used to ...
Page 104 - Switch Operation Mode; To change the switch’s operating mode:; Switch Settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide apply when the port is used for the console port. Available speeds are 2400 , 9600 , 19200 and 38400 bits per second. The default setting is 9600 . Interface Name This allows for the naming of the SLIP interface for easy reference. Local IP Address ...
Page 105 - Figure 6-20. Switch Operation Mode screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-19. Switch Settings menu Highlight Switch Operation Mode on the Switch Settings menu and press Enter . Figure 6-20. Switch Operation Mode screen The field Select switch operation mode can be toggled using the space bar to one of the two swi...
Page 106 - Figure 6-21. Change Mode Confirmation screen; Menu Changes with Switch Operating Mode; Figure 6-22. Main Menu – Layer 2 Switching Mode
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-21. Change Mode Confirmation screen Type y and press Enter . The switch will then save the changes made during the current session and reboot. The switch must be rebooted to change the operation mode. Menu Changes with Switch Operating Mode...
Page 107 - Figure 6-23. Main Menu – Layer 3 IP Routing Mode; Figure 6-24. Switch Mode Selection screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-23. Main Menu – Layer 3 IP Routing Mode This is the Main Menu when the switch is in Layer 3 mode. Note that the configuration functions necessary for Layer 3 operation have been added to the same Main Menu entries used for Layer 2 mode. Lay...
Page 108 - Figure 6-25. Change Operating Mode Confirmation screen; Layer 2 Switch Settings; Figure 6-26. Layer 2 Switch Settings menu
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The Select switch operation mode field can be toggled between Layer 2 Only, Support IEEE802.1Q VLANs (Layer 2 mode) and IP Routing, Support IEEE 802.1Q VLANs (Layer 3 mode). Highlight APPLY and press Enter . The switch will then reboot. When the swi...
Page 110 - Figure 6-27. Layer 3 IP Routing Protocol Settings screen; Screen Hierarchy
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-27. Layer 3 IP Routing Protocol Settings screen The following fields can then be set: Parameter Description DVMRP state :< Disabled > Allows the Distance-Vector Multicast Routing Protocol (DVMRP) to be Enabled or Disabled globally on ...
Page 112 - Advanced Setup; Configuring VLANs; To create a new 802.1Q VLAN
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Setup IEEE 802.1Q Multicasting Forwarding Setup IP Multicasting Multicast Interface Configuration IGMP Interface Configuration IGMP Static Member Configuration DVMRP Interface Configuration PIM-DM Interface Configuration Setup Static Router Port VLA...
Page 114 - Action; To set the 802.1Q VLAN membership status of a port:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide of the VLAN. Egress Member Ports are ports that will be transmitting traffic for the VLAN. These ports can be either tagged or untagged. F Forbidden Non-Member - specifies the port as not being a member of the VLAN and that the port is forbidden fro...
Page 115 - To configure the member ports of an 802.1Q VLAN; Highlight; Configure 802.1Q Port Settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide In the following example screen, the VLAN “evilJulius” - VID# 2 – has been added. Ports 1, 2, 12, 14, 17, 25, and 26 are Egress ports (static members of “evilJulius”. Ports 5, 6, and 7 are Forbidden ports (non-members and are not allowed to join the...
Page 116 - Parameter
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-32. Configure 802.1Q Port Settings screen The following fields can be set: Parameter Description Module: This allows you to toggle between the Base Unit and Slot-1 . Configure Port from [ ] to [ ] This allows the entry of a contiguous range...
Page 117 - To configure a port’s 802.1Q VLAN settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide To configure a port’s 802.1Q VLAN settings : Highlight the Configure Port from [ ] to [ ] field and enter the range of port numbers you want to configure. As an alternative you can use the arrow keys to highlight the PVID# field and enter the PVID f...
Page 118 - Setting Up IP Interfaces
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide To delete an entire VLAN, toggle the Action field to Delete , enter either the VID or the VLAN Name in the appropriate field and press Enter . Highlight Apply and press Enter . The selected VLAN will be deleted. To enter the change into Non-volatile...
Page 119 - Table 6-3. VLAN Example – Assigned Ports; Table 6-4. VLAN Example – Assigned IP Interfaces; To setup IP Interfaces on the switch:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Table 6-3. VLAN Example – Assigned Ports In this case, 6 IP interfaces are required, so a CIDR notation of 10.32.0.0/11 (or a 11-bit) addressing scheme will work. This addressing scheme will give a subnet mask of 11111111.11100000.00000000.00000000 ...
Page 120 - Figure 6-36. Setup Layer 3 – IP Networking menu; Yes
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-36. Setup Layer 3 – IP Networking menu Highlight Setup IP Interface and press Enter . Figure 6-37. Layer 3 – IP Networking Menu Toggle the Action field to Add/Modify . Choose a name for the interface to be added and enter it in the Interfac...
Page 122 - Setup Routing Information Protocol (RIP)
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Setup Routing Information Protocol (RIP) If an IP Interface is created while RIP is enabled, the TX Mode default will be V2 Only and the RX Mode default will be V1 and V2. To access the Setup RIP Configuration menu, highlight Setup RIP Configuration...
Page 123 - MD5 Key Table Configuration
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set: Parameter Description Interface name: [ ] The name of the IP interface on which RIP is to be setup. This interface must be previously configured on the switch. TX Mode < Disabled > Toggle among Disabled , V1 On...
Page 124 - Setup RIP Configuration
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide This screen allows the entry of a 16-character Message Digest (version 5 − MD5) key that can be used to authenticate every packet exchanged between OSPF routers. It is used as a security mechanism to limit the exchange of network topology informatio...
Page 126 - Setup OSPF
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Setup OSPF Highlight Setup OSPF from the Setup Layer 3 - IP Networking menu and press Enter to access the Setup OSPF menu. Figure 6-44. Setup OSPF menu Each menu item is explained as follows: • OSPF Area Setting – Allows the configuration of sub-dom...
Page 127 - Disabled; OSPF Area Setting; Normal
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set: Parameter Description OSPF Router ID:[ ] A 32-bit number (in the form of an IP address − xxx.xxx.xxx.xxx) that uniquely identifies the switch in the OSPF domain. It is common to assign the highest IP address assigned...
Page 128 - OSPF Interface Configuration; Figure 6-46. OSPF Interface Configuration screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set: Parameter Description Action:< Add/Modify > This field can be toggled using the space bar between Add/Modify and Delete . Add/Modify allows for the creation of a new OSPF Area or changes to an existing OSPF Are...
Page 130 - Virtual Interface Configuration; Transit Area
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Virtual Interface Configuration Virtual Interfaces are used by OSPF to link areas that do not have a physical connection to the backbone (also called Area 0) or to link areas of the backbone itself that are discontinuous. This allows routing informa...
Page 131 - Area Aggregation Configuration; Figure 6-48. Area Aggregation Configuration screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Status Displays the current status ( UP or DOWN ) of the corresponding OSPF Virtual Interface. Area Aggregation Configuration Area Aggregation allows all of the routing information that may be contained within an area to be aggregated into a summary...
Page 132 - Route Redistribution Settings; Figure 6-49. Route Redistribution Settings screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Advertisement: < Yes > This field can be toggled between Yes and No using the space bar. It determines whether or not the selected OSPF Area will advertise it’s summary LSDB (Network-Number and Network-Mask) or not. Route Redistribution Settin...
Page 133 - Multicasting; Layer 2 Multicast Setup; Figure 6-51. IGMP Snooping Settings screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide applies only when the destination field is OSPF. Metric:[ ] Allows the entry of an OSPF interface cost. This is analogous to a Hop Count in the RIP routing protocol. Multicasting Layer 2 Multicast Setup To setup Multicasting on the switch, when the ...
Page 134 - To configure IGMP Snooping:; IEEE 802.1Q Multicast Forwarding
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide To configure IGMP Snooping: Toggle the Switch IGMP Snooping field to Enabled . Toggle the Querier State field to the appropriate choice between Non-Querier, V1-Querier, and V2-Querier to determine the version of IGMP that is used in your network. A ...
Page 135 - VID; The field can be toggled between; Multicast MAC
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-52. Setup IEEE 802.1Q Multicast Forwarding screen When the switch is in Layer 2 operating mode, IEEE 802.1Q multicast forwarding allows the static entry of multicast MAC addresses, which will be sources of multicast packets, and switch port...
Page 136 - Static Router Port Settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Static Router Port Settings A static router port is a port that has a multicast router attached to it. Generally, this router would have a connection to a WAN or to the Internet. Establishing a router port will allow multicast packets coming from th...
Page 137 - Layer 3 Multicasting; To setup IP multicasting on the switch; Multicast Interface Configuration
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Layer 3 Multicasting When the switch is in IP Routing mode, several functions supporting IP multicasting are added to the Multicasting menu. These additional functions can be configured under the IP Multicasting Settings menu. With the switch in IP ...
Page 138 - Figure 6-56. Multicast Interface Configuration screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide . Figure 6-56. Multicast Interface Configuration screen This menu allows the assignment of a multicast routing protocol to an IP interface. The IP interface must have been previously configured on the switch. In addition, IGMP may be enabled or disa...
Page 139 - IGMP Interface Configuration; Figure 6-57. IGMP Interface Configuration screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide IGMP Interface Configuration Figure 6-57. IGMP Interface Configuration screen This menu allows the configuration of IGMP for each IP interface configured on the switch. IGMP can be configured as Version 1 or 2 by toggling the Ver field. The length o...
Page 140 - DVMRP; To configure DVMRP for an IP interface, highlight; DVMRP Interface; Setup IP; menu and press
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide name entered above. DVMRP To configure DVMRP for an IP interface, highlight DVMRP Interface Configuration from the Setup IP Multicast menu and press Enter . Figure 6-58. DVMRP Interface Configuration screen This menu allows the Distance-Vector Multi...
Page 141 - Probe Interval; To configure PIMDM for an IP interface:; PIMDM Interface Configuration
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set: Parameter Description Interface Name: [ ] Allows the entry of the name of the IP interface for which DVMRP is to be configured. This must be a previously defined IP interface. NBR Report Timer:[ 35 ] This field allow...
Page 142 - Port Mirroring; To configure a port for port mirroring:; Mirroring
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The Protocol Independent Multicast – Dense Mode (PIM-DM) protocol should be used in networks with a low delay (low latency) and high bandwidth as PIM-DM is optimized to guarantee delivery of multicast packets, not to reduce overhead. The PIM-DM mult...
Page 143 - To select the target port, highlight; Target Port Selection
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-60. Mirroring Menu To select the target port, highlight Target Port Selection and press Enter . Figure 6-61. Target Port Selection screen The target port is the port where information will be duplicated and sent for capture and network anal...
Page 144 - Figure 6-62. Setup Port Mirroring screen; Priority
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-62. Setup Port Mirroring screen Up to 25 entries can be made to the port mirroring table, but it should be noted that a faster port (a 1000 Mbps Gigabit Ethernet port, for example) should not be mirrored to a slower port (one of the 24 100 ...
Page 145 - Figure 6-63. Setup MAC Address Priority screen; The following fields can be set:; This field can be toggled between
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-63. Setup MAC Address Priority screen The following fields can be set: Parameter Description Action:< Add/Modify > This field can be toggled between Add/Modify and Delete using the space bar. VID:[ 1 ] Allows the entry of the VLAN ID ...
Page 146 - Layer 2 Filtering; Figure 6-65. Setup MAC Address Filter screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Filtering Layer 2 Filtering To enter a MAC address into the filtering table , highlight Filtering from the Main Menu and press Enter . Figure 6-64. Filtering Menu Highlight MAC Address Filter and press Enter . Figure 6-65. Setup MAC Address Filter s...
Page 148 - Figure 6-67. Setup IP Address Filtering screen; Layer 2 Forwarding; Forwarding
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-67. Setup IP Address Filtering screen The following fields can be set: Parameter Description Action:<Add/Modify > This field can be toggled between Add/Modify and Delete using the space bar. IP Address:[ ] Allows the entry of an IP ad...
Page 149 - MAC Address Forwarding
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-68. Forwarding Menu – Layer 2 Highlight MAC Address Forwarding from the Forwarding Menu and press Enter . Figure 6-69. Setup Static Unicast MAC Forwarding screen The following fields can be set: Parameter Description Action:< Add/Modify ...
Page 150 - IP Forwarding; Static/Default Routes
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide above resides. IP Forwarding Static/Default Routes With the switch in Layer 3 Operation mode, entries into the switch’s forwarding table can be made using both MAC addresses and IP addresses. Static IP forwarding is accomplished by the entry of an I...
Page 151 - Static ARP; Figure 6-71. Setup Static ARP Entries screen; Switch Spanning Tree Settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Static ARP To make a static ARP entry, highlight Static ARP from the Forwarding Menu and press Enter . Figure 6-71. Setup Static ARP Entries screen The following fields can be set: Parameter Description Action: < Add/Modify > The field can be ...
Page 152 - necessary to change them.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-72. Configure Spanning Tree - Global The Spanning Tree Protocol (STP) operates on two levels: on the switch level, the settings are globally implemented. On the port level, the settings are implemented on a per user-defined Group basis. The...
Page 153 - STP Group Configuration
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The Hello Time cannot be longer than the Max. Age. Otherwise, a configuration error will occur. Observe the following formulas when setting the above parameters: Max. Age ≤ 2 x (Forward Delay - 1 second) Max. Age ≥ 2 x (Hello Time + 1 second) STP Gr...
Page 156 - Configure Spanning Tree
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set: Parameter Description Group ID:[ 1 ] This field can be toggled between any one of the six possible link aggregation groups configurable on the switch. Port:[ 1 ] The Master port of link aggregation group. Group Width...
Page 158 - Create Spanning Tree Groups; Membership; Spanning Tree Port Settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Create Spanning Tree Groups The DES-3326 switch allows you to configure Spanning Tree Groups that consist of a group of ports that will be handled as though they were a single spanning tree device. The following figures and tables describe how to co...
Page 159 - Figure 6-78. Port Spanning Tree Settings screen; Utilities; Layer 2 Switch Utilities; Switch Utilities
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-78. Port Spanning Tree Settings screen The following fields can be set: Parameter Description View Ports: < 1 to 12 > Allows the selection of groups of ports to view. Can be toggled between 1 to 12 , 13 to 24 , and Slot-1 . Configure ...
Page 160 - Upgrade Firmware from TFTP Server
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-79. Switch Utilities menu Trivial File Transfer Protocol (TFTP) services allow the switch firmware to be upgraded by transferring a new firmware file from a TFTP server to the switch. A configuration file can also be loaded into the switch ...
Page 161 - Use Configuration File on TFTP Server; Figure 6-81. Use Configuration File on TFTP Server screen; Save Settings to TFTP Server; Figure 6-82. Save Settings to TFTP Server screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Highlight START and press Enter to initiate the file transfer. Use Configuration File on TFTP Server To download a switch configuration file from a TFTP server , select Use Configuration File on TFTP Server and press Enter . Figure 6-81. Use Configu...
Page 162 - Save History Log to TFTP Server; Figure 6-83. Save Log to TFTP Server screen; Testing Connectivity with Ping
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Save History Log to TFTP Server To save a History Log on a TFTP server , highlight Save History Log to TFTP Server and press Enter . Figure 6-83. Save Log to TFTP Server screen Enter the IP address of the TFTP server and the path and filename for th...
Page 164 - Figure 6-86. BOOTP/DHCP Relay Interface Configuration screen; To enter the IP addresses of DNS servers (for the DNS Relay service):
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide To configure the BOOTP/DHCP Relay interface, highlight BOOTP/DHCP Relay Interface Configuration from the BOOTP/DHCP Relay menu and press Enter . Figure 6-86. BOOTP/DHCP Relay Interface Configuration screen The following fields can be set: Parameter ...
Page 165 - To make a static DNS table entry:; Static table configuration
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-87. DNS Relay screen The following fields can be set: Parameter Description DNSR Status < Disabled > This field can be toggled between Disabled and Enabled using the space bar, and is used to enable or disable the DNS Relay service on...
Page 166 - Figure 6-88. DNS Relay – Static table configuration screen; Domain Name
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-88. DNS Relay – Static table configuration screen The following fields can be set: Parameter Description Action:< Add/Edit > The Action field can be toggled between Add/Edit and Delete . Enter the Domain name and its corresponding IP ...
Page 167 - Network Monitoring; Layer 2 Network Monitoring; To display the network data compiled by the switch:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Network Monitoring The DES-3326 provides extensive network monitoring capabilities that can be viewed under Network Monitoring Menu from the Main Menu . Network monitoring on the switch is divided into Layer 2 and Layer 3 functions, depending upon w...
Page 168 - Port Utilization; To view the port utilization:; Suspend
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Port Utilization The Port Utilization screen shows the number of packets transmitted and received per second and calculates the percentage of the total available bandwidth being used on the port (displayed under %Util. ). To view the port utilizatio...
Page 169 - Port Error Packets; To view the error statistics for a port:; Figure 6-91. Packet Error Statistic screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Port Error Packets The Packet Error Statistic screen displays the packet errors that the switch can detect and displays the results on a per port basis. To view the error statistics for a port: Highlight Port Error Packets on the Network Monitoring ...
Page 170 - Transmitted packets.; Port Packet Analysis; The
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Parameter Description Interval:< 2 sec > The interval (in seconds) that the table is updated. The default is 2 seconds . RX Frames Received packets. CRC Error For 10 Mbps ports, the counter records CRC errors (FCS or alignment errors). For 100...
Page 171 - To view an analysis of packets received or transmitted by a port:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide To view an analysis of packets received or transmitted by a port: Highlight Port Packet Analysis on the Network Monitoring Menu and press Enter . Figure 6-92. Packet Analysis screen Parameter Description Interval:< 2 sec > The interval (in sec...
Page 172 - Browse MAC Address; To view the MAC address forwarding table:; Figure 6-93. Browse Address Table screen; To search for a particular MAC address:; GVRP; To view the GVRP status table:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Browse MAC Address This allows the switch’s dynamic MAC address forwarding table to be viewed. When the switch learns an association between a MAC address and a port number, it makes an entry into its forwarding table. These entries are then used to...
Page 173 - GMRP; To view the; Browse Router Port; To view the Router Port table:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-94. GVRP Status screen GMRP The Group Multicast Registration Protocol (GMRP) Status screen displays the status of ports that have GMRP enabled on the switch. To view the GMRP Status table: Highlight GMRP from the Network Monitoring Menu and...
Page 174 - IGMP Snooping; To view the IGMP Snooping table:; Figure 6-97. IGMP Snooping Status screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-96. Browse Router Port screen The Jump to VID field allows the entry of any VLAN ID (VID) of any VLAN defined on the switch. Enter the VID, highlight GO and press Enter . The table will then jump to the VID entered. S signifies a static rou...
Page 175 - Switch History; To view the switch history log:; Layer 3 Network Monitoring; The following items are added to the
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Switch History This allows the Switch History Log to be viewed. The switch records all traps, in sequence, that identify events on the switch. The time since the last cold start of the switch is also recorded. To view the switch history log: Highlig...
Page 176 - Figure 6-99. Network Monitoring Menu – Layer 3; Browse IP Address; To view the IP address forwarding table:; Figure 6-100. Browse IP Address Table – Layer 3; Routing Table; To view the contents of the IP Routing table:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-99. Network Monitoring Menu – Layer 3 Browse IP Address To view the IP address forwarding table: Highlight Browse IP Address from the Network Monitoring Menu and press Enter . Figure 6-100. Browse IP Address Table – Layer 3 To display a par...
Page 177 - Figure 6-101. Browse Routing Table screen; ARP Table; To view the ARP table:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-101. Browse Routing Table screen To display a particular Destination IP address, enter either the IP address in the Jump to Destination Address field, the gateway address in the Gateway field and the subnet mask in the Mask field, highlight...
Page 178 - Default IP Table; To view the Default IP Address Table:; Figure 6-103. Default IP Address screen; OSPF LSDB Table; To view the Monitor LSDB Table:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-102. Browse ARP Table screen To display a particular IP interface or an IP address, enter either the IP interface name in the Jump to Interface Name field or enter the IP address in the IP Address field, highlight GO, and press Enter . Defa...
Page 179 - Figure 6-104. Monitor LSDB Table screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-104. Monitor LSDB Table screen The following fields are displayed: Parameter Description Area ID Allows the entry of an OSPF Area ID. This Area ID will then be used to search the table, and display an entry − if there is one. LSDB Type Disp...
Page 180 - OSPF External LSDB Table; Figure 6-105. Monitor External LSDB Table screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide OSPF External LSDB Table The external OSPF Link State Database (LSDB) table can be viewed by highlighting OSPF External LSDB Table and pressing Enter . Figure 6-105. Monitor External LSDB Table screen The following fields are displayed: Parameter De...
Page 181 - IP Multicast Forwarding Table; To view the IP multicast forwarding table:; Figure 6-106. Browse IP Multicast Forwarding Table screen; IGMP Group Table; To view the IGMP Group table:; Figure 6-107. Browse IGMP Group Table screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide IP Multicast Forwarding Table To view the IP multicast forwarding table: Highlight IP Multicast Forwarding Table from the Network Monitoring Menu and press Enter . Figure 6-106. Browse IP Multicast Forwarding Table screen To display a particular mul...
Page 182 - DVMRP Routing Table; To view the DVMRP Routing table:; Figure 6-108. Browse DVMRP Routing Table screen; Load Factory Defaults
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide To display a particular multicast group, enter either the IP address in the Jump to Interface Name field, enter the multicast group IP address in the Multicast Group field, highlight GO, and press Enter . DVMRP Routing Table To view the DVMRP Routin...
Page 183 - Reboot; To reboot the switch from the console:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Highlight one of the two Load Factory Default Configuration entries and press Enter . A confirmation screen will appear. Press Y for Yes and press Enter . The factory defaults for the DES-3326 are listed in Appendix D of this manual. Reboot The DES-...
Page 184 - Figure 6-111. System Reboot Confirmation screen
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 6-111. System Reboot Confirmation screen To reboot the switch, in the mode entered above, highlight Yes and press Enter . 184
Page 185 - EB; Introduction; This Web-based Management Module does; General Deployment Strategy
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 7 W EB -B ASED N ETWORK M ANAGEMENT Introduction The DES-3326 offers an embedded Web-based (HTML) interface allowing users to manage the switch from anywhere on the network through a standard browser such as Netscape Navigator/Communicator or Micros...
Page 186 - Switch Management Concepts; section titled; IP Addressing and; for more information.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide 2. Develop an IP addressing scheme. This involves allocating a block of IP addresses to each network segment. Each network interface is then assigned a network address and a subnet mask. See Chapter 5, Switch Management Concepts section titled IP Ad...
Page 187 - Defining Static Routes; Getting Started; section in Chapter 6,; In the page that opens, click on the; Configuring the Switch; From the main menu, click; Management; and then select
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide IP address. It should be noted that the switch regards a VLAN with an IP network address and corresponding subnet mask assigned as an IP interface in IP Routing mode. Defining Static Routes Routes between the IP interfaces and a default gateway or o...
Page 188 - Figure 7-3. User Accounts Control Table – Add window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Click New to add a user. Figure 7-3. User Accounts Control Table – Add window 1. Enter the new user name, assign an initial password, and then confirm the new password. Determine whether the new user should have Root , User+ , or User privileges. 2....
Page 189 - Figure 7-5. Factory Reset to Default Value window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Saving Changes The DES-3326 has two levels of memory; normal RAM and non-volatile or NV-RAM. Configuration changes are made effective by clickng Apply . When this is done, the settings will be immediately applied to the switching software in RAM, an...
Page 190 - USING WEB-BASED MANAGEMENT; Setting Up Web Management; The IP address may alternatively be set manually as follows; Setting a Default Gateway
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide USING WEB-BASED MANAGEMENT Setting Up Web Management Before running Web-based management, some basic configuration of the switch may need to be performed. The following at a minimum must be configured or known for the switch to be managed: • IP Addr...
Page 191 - Setting the Administrator Password; Saving Configuration Changes; APPLY; Starting and Stopping the Web-based Manager
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Setting the Administrator Password Management access to the switch is restricted based on the administrator password. Administrators have read/write access for parameters governing the SNMP agent. You should therefore assign a password to the defaul...
Page 192 - To stop the web-based manager, close the Web browser application.; Web-based Manager’s User Interface; The user interface is divided into 3 distinct areas:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-7. Password dialog box 1. Use the User Name, and Password previously entered in the Setting Up Web Management section. This will allow read/write access to the switch. 2. The full application will now launch. A four-frame page will display ...
Page 193 - Area Function; Allows the selection of commands.; CONFIGURING AND MONITORING
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Area Function 1 Allows the selection of commands. 2 Presents a graphical near real-time image of the front panel of the switch. This area displays the switch’s ports and expansion modules, showing port activity, duplex mode, or flow control, dependi...
Page 194 - Link
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Link Menus Configuration IP Address Switch Information Configure Port Switch Settings Switch Operation Mode Layer 2 Switch Settings VLANs 802.1Q Static VLANs 802.1Q Port Settings Port VLAN ID (PVID) Port Ingress Filter Port GVRP Settings Port GMRP S...
Page 196 - This section will help prepare the Switch user by describing the; Switch Information – Basic Settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Filtering MAC Filtering MAC Address Filtering IP Filtering IP Address Filtering BOOTP/DHCP Relay BOOTP/DHCP Relay Static Setup DNS Relay DNS Relay Static Setup Management Management Station IP Community Strings Trap Receivers User Accounts Managemen...
Page 197 - Figure 7-9. Switch Information – Basic Settings window; IP Address
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Switch Information Click the Switch Information link in the Configuration menu. Figure 7-9. Switch Information – Basic Settings window The Switch Information window shows which (if any) external modules are installed, and the switch’s MAC Address (a...
Page 198 - Enter the appropriate IP address and subnet mask.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-10. IP Address window The switch’s factory default IP address is 10.90.90.90 with a subnet mask of 255.0.0.0 and a default gateway of 0.0.0.0. To manually assign the switch’s IP address, subnet mask, and default gateway address: Enter the a...
Page 200 - Figure 7-11. Management Station IP Settings window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide SNMP Settings Some settings must be entered to allow the switch to be managed from an SNMP-based Network Management System such as SNMP v1 or to be able to access the Switch using the Telnet protocol or the Web Manager. To setup the switch for remot...
Page 201 - Auto; Port Locking
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The Status field can be toggled between Enabled and Disabled to enable or disable the receipt of SNMP traps by the listed management stations. Configure Ports Click the Configure Ports link on the Configuration menu: Figure 7-13. Configure Port wind...
Page 203 - Use the; Select Protocol; pull-down menu to select either the; Baud Rate
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-14. Serial Port Settings window Use the Select Protocol pull-down menu to select either the Console or the SLIP protocol. The following fields can then be set: Console Settings Parameter Description Baud Rate Displays the serial bit rate us...
Page 205 - Figure 7-15. Switch Operation Mode window; Figure 7-16. Layer 2 Switch Settings window; Broadcast
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-15. Switch Operation Mode window Use the Restart Mode pull-down menu to select one of the two switch operation modes: Layer 2, Support IEEE 802.1Q VLANs and IP Routing, Support IEEE 802.1Q VLANs . To make a change in the operation mode of t...
Page 206 - Figure 7-17. Layer 3 IP Routing Protocol Settings window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide < Disabled > dictate, globally, the switch’s reaction to Broadcast storms and/or Multicast storms, triggered at the threshold set below. Upper Threshold for Base ports < 128 > This is the number of thousands Broadcast/Multicast packets p...
Page 208 - Figure 7-19. 802.1Q Static VLANs Entry Settings – Add window; To edit an existing 802.1Q VLAN, click the
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Advanced Setup Changing switch operation mode setting changes some of the menus and configuration options for the Advanced Setup of the switch. The configuration data for each mode is, however, saved when the switch’s operating mode is changed. Conf...
Page 209 - Figure 7-20. 802.1Q Static VLANs Entry Settings – Edit window; The following fields can then be set:; To set a port as either a Tagged or an Untagged port
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-20. 802.1Q Static VLANs Entry Settings – Edit window The following fields can then be set: Parameter Description VLAN ID (VID) Allows the entry of the name of an existing VLAN. VLANs can be identified by either the VID or the VLAN name. Por...
Page 211 - Figure 7-22. Port Ingress Filter window; Disable
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Go to the Configuration menu, select VLANs , choose 802.1Q Port Settings , and then click Port Ingress Filter : Figure 7-22. Port Ingress Filter window The following field can be set: Parameter Description Ingress Filter < Disable > This field...
Page 212 - Configuration; The following field can be set:; as a Layer 2 Only VLAN – regardless of the Switch Operation mode.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following field can be set: Parameter Description GVRP < Disabled > The Group VLAN Registration Protocol (GVRP) enables the port to dynamically become a member of a VLAN. Each port can be configured to use the Group Multicast Registration ...
Page 214 - Figure 7-26. Setup IP Interface – Add window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-25. Setup IP Interface window To setup an new IP interface, click the New icon: Figure 7-26. Setup IP Interface – Add window To edit an existing IP interface, click on the Hand icon: Figure 7-27. Setup IP Interface – Edit window Choose a na...
Page 215 - Setup the Routing Information Protocol (RIP)
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set: Parameter Description Subnet Name This field allows the entry of a name for the IP interface. The default IP interface is named “System”. IP Address This field allows the entry of an IP address to be assigned to this...
Page 216 - Hand
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-29. Setup RIP window To edit a RIP configuration, click the Hand icon. Figure 7-30. Setup RIP – Edit window The following fields can be set: Parameter Description Subnet Name The name of the IP interface on which RIP is to be setup. This in...
Page 217 - OSPF
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide OSPF MD5 Key Table Configuration The MD5 Key Table Configuration menu allows the entry of a 16-character Message Digest − version 5 (MD5) key that can be used to authenticate every packet exchanged between OSPF routers. It is used as a security mech...
Page 218 - The following parameters can be set or are displayed:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following parameters can be set or are displayed: Parameter Description OSPF Route ID A 32-bit number (in the form of an IP address − xxx.xxx.xxx.xxx) that uniquely identifies the switch in the OSPF domain. It is common to assign the highest IP ...
Page 219 - Figure 7-34. OSPF Interface Configuration window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set or are displayed: Parameter Description Area ID A 32-bit number in the form of an IP address (xxx.xxx.xxx.xxx) that uniquely identifies the OSPF area in the OSPF domain. Type This field can be toggled between Normal a...
Page 220 - None
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set: Parameter Description Interface Name Allows the entry of the name of an IP interface previously configured on the switch. Area ID Allows the entry of an OSPF Area ID configured above. Router Priority Allows the entry...
Page 221 - Figure 7-35. Virtual Interface Configuration window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-35. Virtual Interface Configuration window The following fields can be set or are displayed: Parameter Description Transit Area ID Allows the entry of an OSPF Area ID − previously defined on the switch − that allows a remote area to communi...
Page 222 - Figure 7-36. OSPF Area Aggregation Configuration window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-36. OSPF Area Aggregation Configuration window The following fields can be set or are displayed: Parameter Description Area ID Allows the entry the OSPF Area ID for which the routing information will be aggregated. This Area ID must be prev...
Page 223 - Figure 7-37. Route Redistribution Settings window; The following fields can be set or are displayed:; RIP; Metric Type; To configure IGMP Snooping
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-37. Route Redistribution Settings window The following fields can be set or are displayed: Parameter Description Source Protocol Allows the selection of the protocol of the source device. Available choices are RIP , OSPF , or Static . Dest....
Page 224 - Figure 7-38. IGMP Control Setup window; To edit the IEEE802.1 Multicast Forwarding settings
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Open the Configuration menu, select Multicasting , and click IGMP Snooping Settings : Figure 7-38. IGMP Control Setup window To configure IGMP Snooping: The following fields can be set: Parameter Description VID Allows the entry of the VLAN ID (VID)...
Page 225 - Click the
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Click the IEEE802.1Q Multicast Forwarding link on the Multicasting menu: Figure 7-39. Setup IEEE 802.1Q Multicast Forwarding window When the switch is in Layer 2 operating mode, IEEE 802.1Q multicast forwarding allows the static entry of multicast M...
Page 226 - To setup a static router port; Figure 7-40. Static Router Port Settings window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide coming from the router to be propagated through the network, as well as allowing multicast messages (IGMP) coming from the network to be propagated to the router. A router port has the following behavior: • All IGMP Report packets will be forwarded ...
Page 227 - Figure 7-42. Multicast Interface Configuration window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Layer 3 Multicasting When the switch is in IP Routing mode, several functions supporting IP multicasting are added to the Multicasting menu. Multicast Interface Configuration To setup IP multicasting on the switch : Open the Multicasting menu (under...
Page 228 - IGMP Settings; Figure 7-43. IGMP Interface Setup window; System
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide IGMP Settings Figure 7-43. IGMP Interface Setup window This menu allows the configuration of IGMP for each IP interface configured on the switch. IGMP can be configured as Version 1 or 2 by toggling the Version field using the pull-down menu. The le...
Page 229 - To configure DVMRP for an IP interface; DVMRP Settings; link on the; IP Multicasting
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide DVMRP Settings To configure DVMRP for an IP interface : Click the DVMRP Settings link on the IP Multicasting menu: Figure 7-44. DVMRP Interface Configuration window This menu allows the Distance-Vector Multicast Routing Protocol to be configured for...
Page 232 - Figure 7-46. Target Port Selection window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-46. Target Port Selection window The target port is the port where information will be duplicated and sent for capture and network analysis. This is the port where a network analyzer would be attached to capture packets duplicated from the ...
Page 233 - To configure a forwarding priority for a given MAC address:; , corresponding to whether the
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Priority To configure a forwarding priority for a given MAC address: Click the Priority link on the Configuration menu: Figure 7-48. Setup MAC Address Priority window The following fields can be set: Parameter Description MAC Address Allows the entr...
Page 234 - To enter a MAC address into the filtering table:; Figure 7-49. Setup MAC Address Filter window; Scr
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Filtering Layer 2 Filtering To enter a MAC address into the filtering table: Select Filtering on the Configuration menu, choose MAC Filtering , and then click MAC Address Filtering : Figure 7-49. Setup MAC Address Filter window When the switch is in...
Page 235 - Figure 7-50. Filter Address Setup window; DstAddr; To enter a MAC address into the switch’s forwarding table; on the
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-50. Filter Address Setup window The following fields can be set: Parameter Description Address < 0.0.0.0 > Allows the entry of an IP address to be filtered from the switch. State < DstAddr > This field can be toggled between Src...
Page 236 - Figure 7-51. Setup Static Unicast MAC Forwarding window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-51. Setup Static Unicast MAC Forwarding window The following fields can be set: Parameter Description MAC Address Allows the entry of the MAC address of an end station that will be entered into the switch’s static forwarding table. VID Allo...
Page 237 - To make a static ARP entry:; Add window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-53. Static/Default Routes – Add window The following fields can be set: Parameter Description IP Address < 0.0.0.0 > Allows the entry of an IP address that will be a static entry into the switch’s Routing Table. Subnet Mask < 0.0.0...
Page 238 - STP Switch Settings; Figure 7-56. STP Switch Settings window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set: Parameter Description Interface Name The name of the IP interface the ARP entry resides on. IP Address The IP address of the ARP entry. MAC Address The MAC address of the ARP entry. Spanning Tree STP Switch Settings ...
Page 239 - Configure STP Groups
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set: Parameter Description Spanning Tree Protocol < Enabled > This field can be toggled between Enabled and Disabled using the pull-down menu. This will enable or disable the Spanning Tree Protocol (STP), globally, ...
Page 240 - To add a new spanning tree group, click the; New; To edit an existing spanning tree entry, click the; To view the STP Port Settings table:; STP Port Settings; Spanning Tree Protocol
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide To add a new spanning tree group, click the New icon: Figure 7-58. STP Group Settings − Add window The new spanning tree group will be identified by the name entered in the Group Name field. The group member ports will be identified by the dots in t...
Page 241 - To configure a link aggregation group:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide An STP Group spanning tree works in the same way as the switch-level spanning tree, but the root bridge concept is replaced with a root port concept. A root port is a port of the group that is elected on the basis of port priority and port cost, to ...
Page 243 - Update Firmware from Server; To update the switch’s firmware:; Figure 7-62. Upgrade Firmware from Server window; Use Configuration File on Server; To download a switch configuration file from a TFTP server:; Figure 7-63. Use Configuration File on Server window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Update Firmware from Server To update the switch’s firmware: Select Upgrade Firmware from Server on the Maintenance menu: Figure 7-62. Upgrade Firmware from Server window Enter the IP address of the TFTP server in the Server IP Address field. The TF...
Page 244 - Save Settings To Server; To upload a settings file to the TFTP server:; Figure 7-64. Save Settings To TFTP Server window; Save History Log to Server; To save a History Log on a TFTP server:; Figure 7-65. Save Switch History To TFTP Server window; Layer 3 Utilities; To enable and configure BOOTP or DHCP on the switch:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Save Settings To Server To upload a settings file to the TFTP server: Click the Save Settings To Server on the Maintenance menu: Figure 7-64. Save Settings To TFTP Server window Enter the IP address of the TFTP server and the path and filename of th...
Page 245 - Static Setup
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-66. BOOTP/DHCP Relay window The following fields can be set: Parameter Description BOOTP/DHCP Relay Status < Disabled > This field can be toggled between Enabled and Disabled using the pull-down menu. It is used to enable or disable t...
Page 247 - console when the switch is in; Statistics
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide To make a static DNS table entry: Click the Static Setup link on the DNS Relay menu: Figure 7-69. DNS Relay Setup window The following fields can be set: Parameter Description Domain Name The domain name of the static DNS table entry. IP Address <...
Page 248 - Address Table
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide • Port Packet Analysis Address Table • Browse MAC Address Sequentially (view the MAC address forwarding table) Applications • GVRP (view the GVRP status table) • GMRP (view the GMRP status table) • Browse Router Port (view the router port status tab...
Page 249 - Port Error Statistics; Figure 7-71. Port Error Packet Statistics window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following field can be set: Parameter Description Update Interval < Suspend > The time between updates received from the switch, in seconds. Suspend stops the updates. The default is Suspend . Port Error Statistics The Port Error Packet St...
Page 250 - The following fields from above are described in more detail:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields from above are described in more detail: Parameter Description Update Interval < Suspend > The interval (in seconds) that the table is updated. The default is Suspend. RX Frames Received packets. CRC Error For 10 Mbps port...
Page 251 - transmission failed due to excessive collisions.; menu under
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide transmission failed due to excessive collisions. Single Coll. Single Collision Frames. The number of successfully transmitted frames for which transmission is inhibited by more than one collision. Coll. An estimate of the total number of collisions ...
Page 252 - Browse MAC Address Sequentially
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields from above are described in more detail: Parameter Description Update Interval < Suspend > The interval (in seconds) that the table is updated. The default is 2 seconds . Frames The number of packets (or frames) received o...
Page 253 - Figure 7-73. Browse Address Table – sequential window; To view the GMRP Status table:; Applications
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-73. Browse Address Table – sequential window GVRP This allows the GVRP status for each of the switch’s ports to be viewed by VLAN. The GVRP status screen displays the ports on the switch that are currently Egress or Untagged ports. To view ...
Page 254 - signifies a static router port, configured by the user.; Reports; IGMP Snooping Status
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-75. GMRP Status window Browse Router Port This displays which of the switch’s ports are currently configured as router ports. A router port configured by a user (using the console or Web-based management interfaces) is displayed as a static...
Page 256 - Browse the Routing Table
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following items are added to the Network Monitoring menu when the switch is in Layer 3 (IP Routing) mode: Address Table • Browse IP Address Sequentially • Routing Table • ARP Table • Default IP Table • OSPF LSDB Table • OSPF External LSDB Table ...
Page 257 - Default IP Address Table
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields are displayed: Parameter Description Destination Address IP address of a learned or statically entered destination. Mask Displays the subnet mask corresponding to the above destination IP address. Gateway Displays the default or...
Page 258 - OSPF Link State Database Table; The switch maintains two OSPF Link State Databases (LSDB)
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-81. Default IP Address window OSPF Link State Database Table The switch maintains two OSPF Link State Databases (LSDB) − Internal and External. The Internal LSDB describes the Link State Advertisements (LSA) for OSPF Antonymous Systems (AS)...
Page 259 - RTRLink
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide The following fields can be set or are displayed: Parameter Description Area ID Displays the OSPF Area ID. Advertise Router ID Displays the Advertising Router’s ID. LSDB Type Displays which one of four types of link advertisements by which the curre...
Page 260 - Figure 7-83. OSPF External LSDB Table window; Figure 7-84. IP Multicast Forwarding Table window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Figure 7-83. OSPF External LSDB Table window The following fields can be set or are displayed: Parameter Description Adv Router ID Displays the Advertising Router’s ID. Link State ID This field identifies the portion of the internet environment that...
Page 261 - Figure 7-86. DVMRP Routing Table window
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide IGMP Group Table To view the IGMP Group table: Click the IGMP Group Table link: Figure 7-85. IGMP Group Table window To display a particular multicast group, enter either the IP address in the Interface Name field, enter the multicast group IP addre...
Page 262 - ECHNICAL; General
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide A T ECHNICAL S PECIFICATIONS General Standards: IEEE 802.3 10BASE-T Ethernet IEEE 802.3u 100BASE-TX Fast Ethernet IEEE 802.3z 1000BASE-SX Gigabit Ethernet IEEE 802.1 P/Q VLAN IEEE 802.3x Full-duplex Flow Control ANSI/IEEE 802.3 Nway auto-negotiation...
Page 263 - Physical and Environmental; Performance
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Physical and Environmental AC inputs: 100 - 240 VAC, 50/60 Hz (internal universal power supply) Power Consumption: 40 watts maximum DC fans: 2 built-in 40 x 40 x10 mm fan Operating Temperature: 0 to 50 degrees Celsius Storage Temperature: -25 to 55 ...
Page 264 - AMPLE; Save settings to TFTP Server; PROM
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide B S AMPLE C ONFIGURATION F ILE This Appendix provides a sample configuration file that can be used with the Update Firmware and Configuration Files screen in the console program. The configuration file is a simple text file that you create. It has t...
Page 265 - Notes about the Configuration File:; This configuration file can only contain 4 settings:; # Sample Config File
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Notes about the Configuration File: This configuration file can only contain 4 settings: Code_type, Ip_addr, Subnet_mask and Default_gateway . Each command can only appear once in the configuration file. If both the Firmware Update and Use Configura...
Page 266 - UNTIME
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide C R UNTIME S WITCHING S OFTWARE D EFAULT S ETTINGS Load Mode Ethernet Switch Operation Mode Layer 2 Configuration update Disable Firmware update Disable Configuration file name None Firmware file name None Out-of-band baud rate 9600 RS232 mode Conso...
Page 267 - NDERSTANDING AND; Blocking State; A port in the blocking state does the following:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide D U NDERSTANDING AND T ROUBLESHOOTING THE S PANNING T REE P ROTOCOL When the spanning-tree algorithm determines a port should be transitioned to the forwarding state, the following occurs: • The port is put into the listening state where it receives...
Page 268 - Listening State; A port in the listening state does the following:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Listening State The listening state is the first transition for a port from the blocking state. Listening is an opportunity for the switch to receive BPDUs that may tell the switch that the port should not continue to transition to the forwarding st...
Page 269 - Learning State; A port in the learning state does the following:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Learning State A port in the learning state prepares to participate in frame forwarding. The port enters the learning state from the listening state. A port in the learning state does the following: • Discards frames received from the network segmen...
Page 270 - Forwarding State; A port in the forwarding state does the following:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Forwarding State A port in the forwarding state forwards packets. The port enters the forwarding state from the learning state when the forward delay timer expires. A port in the forwarding state does the following: • Forwards packets received from ...
Page 271 - Disabled State; A disabled port does the following:
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Disabled State A port in the disabled state does not participate in frame forwarding or STP. A port in the disabled state is virtually non-operational. A disabled port does the following: • Discards packets received from the network segment to which...
Page 272 - Troubleshooting STP; Spanning Tree Protocol Failure
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Troubleshooting STP Spanning Tree Protocol Failure A failure in the STA generally leads to a bridging loop. A bridging loop in an STP environment comes from a port that should be in the blocking state, but is forwarding packets. 272
Page 273 - Full/Half Duplex Mismatch
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide In this example, B has been elected as the designated bridge and port 2 on C is in the blocking state. The election of B as the designated bridge is determined by the exchange of BPDUs between B and C. B had a better BPDU than C. B continues sending...
Page 274 - Unidirectional Link
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide In the above example, port 1 on B is configured as a full-duplex port and port 1 on A is either configured as a half-duplex port, or left in auto-negotiation mode. Because port 1 on B is configured as a full-duplex port, it does not do the carrier s...
Page 275 - Packet Corruption; Know where the root is located.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide state. If the failure exists at boot, STP will not converge and rebooting the bridges will have no effect. (Note: Rebooting would help temporarily in the previous example). This type of failure is difficult to detect because the Link-state LEDs for ...
Page 276 - Know which links are redundant.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide Although the STP can elect a root bridge, a well-designed network will have an identifiable root for each VLAN. Careful setup of the STP parameters will lead to the selection of this best switch as the root for each VLAN. Redundant links can then be...
Page 277 - Impact of Layer 3 Switching.
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide In this example, the VLAN definitions are extended to switches A and B. This gives only a single blocked port per VLAN and allows the removal of all redundant links by removing switch A or B from the network. Impact of Layer 3 Switching. The IP rout...
Page 279 - OR; XOR; The logical; NOT
E B RIEF R EVIEW OF B ITWISE L OGICAL O PERATIONS AND The logical AND operation compares 2 bits and if they are both “ 1”, then the result is “1”, otherwise, the result is “0”. 0 1 0 0 0 1 0 1 OR The logical OR operation compares 2 bits and if either or both bits are “1”, then the result is “1”, oth...
Page 280 - NDEX; Changing your Password; log in
I NDEX 1 1000BASE-SX Gigabit Module.....................................21 100BASE-FX Fiber (MTRJ Type) Module ...................20 100BASE-FX Fiber Module ..........................................20 100BASE-TX Device ....................................................23 100BASE-TX Module ..........
Page 281 - untagging
N Network Classes Class A, B, C for Subnet Mask ...........................97, 196 NV-RAM ...............................................................91, 186 NWay .............................................................................11 Subnet Mask .............................................
Page 282 - Offices
Offices Australia D-Link Australasia Unit 16, 390 Eastern Valley Way, Roseville, NSW 2069 Australia TEL: 61-2-9417-7100 FAX: 61-2-9417-1077 TOLL FREE (Australia): 1800-177100 TOLL FREE (New Zealand): 0800-900900 URL: www.dlink.com.au E-MAIL: [email protected] & [email protected] Level 1, 434 ...
Page 284 - Registration Card
Registration Card Print, type or use block letters. Your name: Mr./Ms_____________________________________________________________________________ Organization: ________________________________________________ Dept. ____________________________ Your title at organization: ___________________________...