Page 3 - iii; Table of Contents
US7070447-001 iii Rev 01 Table of Contents Chapter 1 Introduction Purpose of the Guide ...................................................................................................... 1-1 Basic Troubleshooting Tips ..................................................................................
Page 4 - iv
iv US7070447-001 Rev 01 Chapter 4 Cabling Basic Connections .......................................................................................................... 4-1 10BASE-TX Ports .................................................................................................... 4-2 10/100BA...
Page 7 - vii; Index
US7070447-001 vii Rev 01 Chapter 12 FDDI Concepts HiSpeed FDDI Uplink ................................................................................................... 12-2 Cable Connections ................................................................................................. 12-3 Obse...
Page 8 - viii
Page 9 - List of Figures
US7070447-001 vii Rev 01 List of Figures Figure 2-1. Model HS140-010 base model with an HS-150-010-16Eexpansion module installed ...................................................................... 2-4 Figure 2-2. HS150-100-16 base model with an HS150-100-8E expansion module installed ...............
Page 11 - ix; List of Tables
US7070447-001 ix Rev 01 List of Tables Table 2-1. Base model configurations ....................................................................... 2-3 Table 2-2. HiSpeed switch expansion modules ........................................................ 2-5 Table 2-3. Uplink modules for the HS15-010 ...
Page 13 - Are you running the latest version of software?
US7070447-001, Rev 01 1- 1 Chapter 1 Introduction Purpose of the Guide The purpose of this troubleshooting guide is to assist users in understanding, identifying and diagnosing network related problems in a switched network environment. Additionally, the guide allows users to gain a better understan...
Page 14 - How to Contact Tech Support
HiSpeed Switch Troubleshooting Guide 1-2 US7070447-001, Rev 01 Draft Level—Hitachi Confidential ❒ Are all users affected? Or a certain group of users on a specific segment? ❒ Are all types of traffic affected? In other words, what protocols are failing? ❒ Is the problem consistent or intermittent? ❒...
Page 15 - If using a browser, type in the following URLs to download the files:
Introduction US7070447-001, Rev 01 1-3 Draft Level—Hitachi Confidential Abatch program called dispcfg is available on Hitachi’s anonymous FTP server (204.48.18.63). When used in combination with HiSpeed’s debugging commands, relevant configuration on the switch is captured and the results are writte...
Page 17 - Basic Product Features Supported; Virtual Routing to provide switching between VLANs
US7070447-001, Rev 01 2- 1 Chapter 2 HiSpeed Switch What is the HiSpeed Switch? The HiSpeed switch is a multiprotocol, Fast Ethernet workgroup switch than can be configured for up to 32 10/100 Mbps LAN switch ports, depending on the model. The HiSpeed switch maximizes performance in existing shared ...
Page 18 - — PCI-based ATM Uplink to server; Available Configurations; The HiSpeed switch is available in two base model configurations:
HiSpeed Switch Troubleshooting Guide 2-2 US7070447-001, Rev 01 Draft Level—Hitachi Confidential ❒ Supports multiple hardware configurations and provides support for the following port configurations: — 10BASE-TX ports — 10/100BASE-TX ports — 100BASE-FX ports — PCI-based ATM Uplink to server — PCI-ba...
Page 19 - The; Base model configurations; -010 switch units accept
HiSpeed Switch US7070447-001, Rev 01 2-3 Draft Level—Hitachi Confidential Each of the HS150 and HS140 models has one expansion slot which can be populated with an expansion module that doubles the number and/or type of available ports. The expansion modules can be installed in the field or at the fa...
Page 21 - Expansion Modules; HiSpeed switch expansion modules; Module Number
HiSpeed Switch US7070447-001, Rev 01 2-5 Draft Level—Hitachi Confidential Key: ➀ Console port ➁ Reset button/Power LED ➂ Onboard module (with TX ports) ➃ Expansion slot (with TX ports) ➄ UpLink slot Figure 2-2. HS150-100-16 base model with an HS150-100-8E expansion module installed Expansion Modules...
Page 22 - UpLink Modules; Model
HiSpeed Switch Troubleshooting Guide 2-6 US7070447-001, Rev 01 Draft Level—Hitachi Confidential UpLink Modules The uplink module is installed into the uplink slot located in the upper left corner of the front panel. The uplink provides high-speed server access for FDDI and ATM. Only the HS150-010 an...
Page 23 - isd; ) are available on the; Observing LEDs
US7070447-001, Rev 01 3- 1 Chapter 3 Hardware Diagnostics The power and status LEDs indicate the general operations of the HiSpeed switch. The HiSpeed switch provides transparent operation once it has been installed and configured. If you suspect that it may be malfunctioning or causing a system pro...
Page 24 - Module LEDs; Reset Button; LED status; LED; TX LEDs; OR; FX LEDs
HiSpeed Switch Troubleshooting Guide 3-2 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Figure 3-1. Module LEDs Reset Button The Reset button, located on the front panel of the switch, allows you to manually recycle power and reset the switch. Pressing the Reset button initiates a warm boot ...
Page 26 - LEDs on FX ports
HiSpeed Switch Troubleshooting Guide 3-4 US7070447-001, Rev 01 Draft Level—Hitachi Confidential ! " # # $% Each FX port has two LEDs to the right of the SC connector. Table 3-3 lists the LEDs and their function. Table 3-2. RJ-45 LEDs LED Color Status Description LINK Link Green Solid Link is act...
Page 27 - HiSpeed Memory, Boot Prom, Flash Components
Hardware Diagnostics US7070447-001, Rev 01 3-5 Draft Level—Hitachi Confidential HiSpeed Memory, Boot Prom, Flash Components The HiSpeed switch is shipped standard from the factory with the following system configurations. ❒ Memory: 8 Mbytes (DRAM) ❒ Boot Prom: 512 Kbytes (EPROM) — Initialization boo...
Page 28 - Ethernet port settings: autonegotiation is ON
HiSpeed Switch Troubleshooting Guide 3-6 US7070447-001, Rev 01 Draft Level—Hitachi Confidential ❒ Ethernet port settings: autonegotiation is ON ❒ Spanning Tree is enabled These settings provide for switching in a single broadcast domain.
Page 29 - Console connection; Basic Connections
US7070447-001, Rev 01 4- 1 Chapter 4 Cabling The HiSpeed switch models are similar in physical makeup of ports and LEDs. This section describes the following port types, LED configurations, and connections for all models. ❒ 10BASE-TX ports ❒ 10/100BASE-TX ports ❒ 100BASE-FX ports ❒ Console connectio...
Page 30 - RJ-45 Connector pin assignments; Pin
HiSpeed Switch Troubleshooting Guide 4-2 US7070447-001, Rev 01 Draft Level—Hitachi Confidential ❒ Line transmission modes on the 10/100BASE-TX ports support both half-duplex and full-duplex operations. By definition, the CSMA/CD protocol is half-duplex where data can be transmitted and received in b...
Page 31 - that only Category 5 cabling be used.
Cabling US7070447-001, Rev 01 4-3 Draft Level—Hitachi Confidential 10/100BASE-TX Ports The 10/100BASE-TX ports on the HiSpeed switch are standard RJ-45 connections using UTP Category 5 cabling. These ports, like the 10BASE-TX ports, are wired for MDI-X and require a crossover cable when connecting t...
Page 32 - Console Port; The pin assignments for the console port are provided in Table 4-2.; Console Port Pin Assignments; Pins
HiSpeed Switch Troubleshooting Guide 4-4 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Console Port The console port has a DB-9 male connector used to connect a management terminal to the switch by means of a straight-through DB-9 to DB-9 standard serial port cable. Using a terminal, you ca...
Page 35 - Chapter 5
Doc Part Number, Version Number 5- 1 Chapter 5 Fundamentals of Networking Today, there are many different types of computers and networking equipment available. These devices are expected to communicate with each other. For this reason, it is extremely important that a set of rules be established an...
Page 36 - Network Media; Layer 1: Physical Layer; Examples of Physical Layer devices are repeaters and hubs.; Layer 2: Data Link Layer
HiSpeed Switch Troubleshooting GUide 5-2 Doc Part Number, Version Number Draft Level—Hitachi Confidential Figure 5-1. Network Media Layers 1 through 3 define the network and how data is transferred across the network. Layers 4 through 7 define how the data is used. Each of the seven layers are descr...
Page 37 - Examples of Layer 2 devices are bridges and switches.; Layer 3: Network Layer; Examples of Layer 3 devices are routers.; Layer 4: Transport Layer
Fundamentals of Networking Doc Part Number, Version Number 5-3 Draft Level—Hitachi Confidential The LLC sublayer defines the logical connection to the upper layer services based on a socket or Service Access Point (SAP). This allows two processes on the same network to maintain a “logical connection...
Page 39 - Chapter 6; Hitachi’s HiSpeed switch can be managed using the following:; Serial connection on the console port; Using the Console Port
Doc Part Number, Version Number 6- 1 Chapter 6 Methods of Managing the Switch Hitachi’s HiSpeed switch can be managed using the following: ❒ Serial connection on the console port ❒ Telnet session over a TCP/IP network ❒ SNMP using HiView’s Graphical User Interface (GUI) CLI (Command Line Interface) ...
Page 40 - Configure the terminal to use the following parameters:; Troubleshooting a Console Connection; Verify you are using a null modem cable.; Reset the switch if it is necessary.; Using a Telnet Session
HiSpeed Switch Troubleshooting GUide 6-2 Doc Part Number, Version Number Draft Level—Hitachi Confidential Configure the terminal to use the following parameters: ❒ Data bits: 8 ❒ Stop bit: 1 ❒ Parity: none ❒ Flow control:none Troubleshooting a Console Connection Use the following procedure to troubl...
Page 41 - Troubleshooting a Telnet Session; Verify that the console setting on the switch is unlocked.; Logging In; Troubleshooting the Login Procedure; Use the following procedure when you cannot log into the switch:
Methods of Managing the Switch Doc Part Number, Version Number 6-3 Draft Level—Hitachi Confidential Troubleshooting a Telnet Session Use the following procedure when you cannot establish a Telnet session to the switch: 1. Verify that the console setting on the switch is unlocked. /console>lock 2....
Page 42 - HiView Switch Management; SNMPC by Castle Rock; Pentium 133 Mhz processor
HiSpeed Switch Troubleshooting GUide 6-4 Doc Part Number, Version Number Draft Level—Hitachi Confidential HiView Switch Management The HiSpeed switch can be configured using Hitachi’s HiView graphical user interface (GUI) application. HiView uses Simple Network Management Protocol (SNMP) to communic...
Page 43 - Sun SPARC station; HiView Tips; HiView Tips; HiView can only manage one switch at a time.; The HiSpeed switch must be running firmware version 1.3.9 or
Methods of Managing the Switch Doc Part Number, Version Number 6-5 Draft Level—Hitachi Confidential UNIX The minimum system requirements to run on a UNIX platform are as follows: ❒ Sun SPARC station ❒ SunOS 4.1.1 or later ❒ Motif 1.2 or greater ❒ OpenView X.X or later HiView Tips Windows 95/NT 4.0 ❒...
Page 44 - Troubleshooting HiView; The LEC Arp does not contain any valid entries.; SNMPC Issues; For the RMON groups to work properly, do the following:; Before changing any table entry values, set the stats-field
HiSpeed Switch Troubleshooting GUide 6-6 Doc Part Number, Version Number Draft Level—Hitachi Confidential ❒ Select the VLAN prior to changing the VLAN color. Otherwise, a core dump will occur. Troubleshooting HiView ❒ In the FDDI MAC statistics menu, the values for Frame Received and Frame Copied ar...
Page 45 - The following is an example of the; MeterWare Issues; The information regarding the SNMPC mibs compiling procedure
Methods of Managing the Switch Doc Part Number, Version Number 6-7 Draft Level—Hitachi Confidential “::= { enterprises hicam(399) nsg(2) nsgConventions(200) 1 }”. The following is an example of the modified section of the NSGTC.MIB. EXAMPLE: IMPORTS MODULE-IDENTITY, enterprises FROM SNMPv2-SMI; -- h...
Page 46 - MIB Compiler; Click on “Invoke MIB Compiler”, select the private MIBs to compile.; After initially clicking on “Reload Now”, an error message will
HiSpeed Switch Troubleshooting GUide 6-8 Doc Part Number, Version Number Draft Level—Hitachi Confidential 2. Click on the menu bar labelled “Tools”, then click on “MIB compiler…” A dialog windows will appear (see Figure 6-1). Figure 6-1. MIB Compiler 3. Click on “Invoke MIB Compiler”, select the pri...
Page 47 - Viewing Hitachi’s private MIBs requires further testing.
Methods of Managing the Switch Doc Part Number, Version Number 6-9 Draft Level—Hitachi Confidential 6. Click on the menu bar labelled “Tools”and click on “MIB Browser”. A dialog window will appear. See Fig.2 below. Go to this directory : iso.org.dod.internet.mgmt. and click on private ( enterprises ...
Page 48 - SNMPTalk Issues; For the RMON groups to work properly, the
HiSpeed Switch Troubleshooting GUide 6-10 Doc Part Number, Version Number Draft Level—Hitachi Confidential SNMPTalk Issues For the RMON groups to work properly, the mib.rt file needs to be loaded in the same directory as SNMPTalk. The mib.rt file contains all MIB information.
Page 50 - Using Spanning Tree
HiSpeed Switch Troubleshooting Guide 7-2 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Figure 7-1. Using Spanning Tree When Spanning Tree is implemented, redundant bridge ports are blocked and looping is eliminated, as shown in Figure 7-1. The first step in forming a Spanning Tree is electi...
Page 51 - Listening; Troubleshooting Bridging Issues
Bridging Concepts US7070447-001, Rev 01 7-3 Draft Level—Hitachi Confidential If, on any given port, a bridge decides to keep a packet from another bridge instead of the packet that it would send, it no longer transmits BPDU messages. Basically, it drops out of the running because it realizes there i...
Page 52 - After rebooting my PC, I cannot log onto my Novell or DHCP server.; To reduce the STA timer, type
HiSpeed Switch Troubleshooting Guide 7-4 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Problem: After rebooting my PC, I cannot log onto my Novell or DHCP server. Solution: PCs equipped with faster processors will boot up before STA on the switch has completely stabilized. Because the ports...
Page 53 - CLI Commands
Bridging Concepts US7070447-001, Rev 01 7-5 Draft Level—Hitachi Confidential CLI Commands /vbridge/show/fwt Displays the bridge forwarding Table. /vbridge/show/filter/all Displays all static entries in the Bridge Forwarding Table. /vbridge/show/bridge <vlan#> Displays the bridge parameters per...
Page 55 - The HiSpeed switch is pre-configured with a default VLAN 1. In order
US7070447-001, Rev 01 8- 1 Chapter 8 VLAN Concepts A VLAN is a network that logically divides workgroups by functions, applications, etc. without regards to the physical location of users, thereby localizing network traffic to those you would communicate with most often. VLANs are bounded by routers...
Page 56 - VLANs; VLANs provide some of the following benefits:; Default VLANs
HiSpeed Switch Troubleshooting Guide 8-2 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Figure 8-1. VLANs VLANs provide some of the following benefits: ❒ Reduced costs As a company grows and reorganizes, physical moves, adds, and re-cabling are made to their network. VLANs provide a cost eff...
Page 57 - Troubleshooting VLANs; Verify the following:
VLAN Concepts US7070447-001, Rev 01 8-3 Draft Level—Hitachi Confidential Troubleshooting VLANs Problem: Cannot ping a user(s) on a different VLAN. Solution: Verify the following: Verify that the port(s) the user(s) is connected to has the correct VLAN number(s) assigned to it. /VLAN/SHOW >vlan Ve...
Page 58 - VLAN Tips; VLAN Entries
HiSpeed Switch Troubleshooting Guide 8-4 US7070447-001, Rev 01 Draft Level—Hitachi Confidential VLAN Tips For each VLAN created with an IP address, an associated entry is also generated. Therefore, it is critical to verify that these entries exist. If any of the entries are missing, the system confi...
Page 59 - Chapter 9
Doc Part Number, Version Number 9- 1 Chapter 9 Troubleshooting at the MAC Layer Ethernet Ethernet is a LAN based technology with data transmission rates of 10 or 100 Mbps. CSMA/CD (Carrier Sense Multiple Access with Collision Detection) protocol dictates how Ethernet frames traverse the network. In ...
Page 60 - Physical Media Specifications; Connector type; Cable type
HiSpeed Switch Troubleshooting GUide 9-2 Doc Part Number, Version Number Draft Level—Hitachi Confidential Physical Media Specifications Common Ethernet Errors 10BASE-5 (Thick Coaxial cable) 10BASE-2 (Thin Coaxial cable) 10BASE-TX (Unshielded Twisted Pair-UTP) 10BASE-FX (Fiber Optical Link) Max. stat...
Page 61 - Ethernet Tips; alignment errors
Troubleshooting at the MAC Layer Doc Part Number, Version Number 9-3 Draft Level—Hitachi Confidential Ethernet Tips ❒ Ensure that both port speed and duplexity on the switch and endstations are the same. ❒ By default, autonegotiation is enabled on the switch. If the endstation’s network adapter card...
Page 62 - Troubleshooting Ethernet; By default, port statistics is disabled on the switch.; Network is experiencing a large number of packet losses..; Port settings are set properly on the switch.
HiSpeed Switch Troubleshooting GUide 9-4 Doc Part Number, Version Number Draft Level—Hitachi Confidential Troubleshooting Ethernet Problem: Switch is not reporting any port statistics even with traffic on my network. Solution: By default, port statistics is disabled on the switch. /ETHERNET/CONFIG &...
Page 65 - Troubleshooting at the Network Layer; IP address classes; Class
US7070447-001, Rev 01 10- 1 Chapter 10 Troubleshooting at the Network Layer IP (Internet Protocol) The HiSpeed switch supports IP (Internet Protocol), a widely used Network Layer protocol used by devices to communicate across a network. IP utilizes a 32-bit address structure to identify the network ...
Page 66 - Other IP-related Services; The HiSpeed switch supports the following IP-related functions:
HiSpeed Switch Troubleshooting Guide 10-2 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Other IP-related Services The HiSpeed switch supports the following IP-related functions: ❒ Address Resolution Protocol (ARP) Used to resolve an IP to MAC address allowing devices to communicate at the D...
Page 67 - Route Cache Forwarding vs. IP Forwarding; An address of
Troubleshooting at the Network Layer US7070447-001, Rev 01 10-3 Draft Level—Hitachi Confidential To prevent routing loops, the HiSpeed switch implements Split Horizon. Networks that are learned through a particular interface will not get advertised back out that same interface. Route Cache Forwardin...
Page 68 - Common ICMP Destination Unreachable Messages; Network Unreachable
HiSpeed Switch Troubleshooting Guide 10-4 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Common ICMP Destination Unreachable Messages Network Unreachable This message is sent by a router indicating that it cannot reach the specified network. This may be a result of a misconfigured mask, link...
Page 69 - Troubleshooting IP; n external router is connected to my switch. I can ping the router; Performance is slow when routing across different networks.; Use the following solutions:
Troubleshooting at the Network Layer US7070447-001, Rev 01 10-5 Draft Level—Hitachi Confidential Troubleshooting IP Problem: A n external router is connected to my switch. I can ping the router interface on my network but cannot reach any networks beyond the router. Solution: Use the following solut...
Page 70 - Cannot establish a telnet session to the switch.
HiSpeed Switch Troubleshooting Guide 10-6 US7070447-001, Rev 01 Draft Level—Hitachi Confidential and performance issues. If using static routes on the HiSpeed switch, you must configure those routes on those directly connected switches and routers. On the HiSpeed switch, use the following command: /...
Page 71 - Basic ATM Concepts
US7070447-001, Rev 01 11- 1 Chapter 11 Basic ATM Concepts Asynchronous Transfer Mode (ATM) is a connection-oriented protocol using 53 byte fixed length cells. One significant advantage of ATM is the ability to carry voice, video and data traffic simultaneously over a 155 megabit per second pipe. The...
Page 72 - The HiSpeed switch implements the following ATM services:; ATM LANE
HiSpeed Switch Troubleshooting Guide 11-2 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Permanent Virtual Circuits vs. Switched Virtual Circuits ATM connections can be established manually (Permanent Virtual Circuits) or dynamically (Switches Virtual Circuits). Permanent Virtual Circuits (P...
Page 73 - The components of an Emulated LAN (ELAN) consists of the following:; LAN Emulation Configuration Server; Use ILMI
Basic ATM Concepts US7070447-001, Rev 01 11-3 Draft Level—Hitachi Confidential The components of an Emulated LAN (ELAN) consists of the following: ❒ LAN Emulation Client (LEC) ❒ LAN Emulation Configuration Server (LECS) ❒ LAN Emulation Server (LES) ❒ Broadcast and Unknown Server (BUS) LAN Emulation ...
Page 74 - ATM CIP
HiSpeed Switch Troubleshooting Guide 11-4 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Classical IP over ATM (CIP) Classical IP (CIP) allows devices in different IP subnets to communicate across an ATM network. If the Classical IP (CIP) interfaces are on different LIS (Logical IP subnets),...
Page 75 - ATM PTOP; Trunking; ATM Trunk
Basic ATM Concepts US7070447-001, Rev 01 11-5 Draft Level—Hitachi Confidential Figure 11-4. ATM PTOP Trunking Trunking allows multiple VLANs to share the same virtual channel connection (VCC) using either Permanent Virtual Connections (PVCs) or Switched Virtual Connections (SVCs). Unlike PTOP, VLAN ...
Page 76 - Hitachi HiSpeed ATM Specifications
HiSpeed Switch Troubleshooting Guide 11-6 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Hitachi HiSpeed ATM Specifications ❒ UNI 3.0 & 3.1 signaling is supported. ❒ Conforms to ILMI Registration 3.1 and ILMI MIB 4.0 specifications. ❒ Due to memory constraints over the ATM uplink, 16 is ...
Page 77 - Troubleshooting LANE
Basic ATM Concepts US7070447-001, Rev 01 11-7 Draft Level—Hitachi Confidential ❒ If your ATM configuration is corrupt, delete your ATM file from the CLI (rm atm.cur), reset the switch, and re-configure ATM. ❒ Signaling changes may require you to reboot the switch. Troubleshooting LANE Problem: I’ve ...
Page 78 - Troubleshooting CIP; Verify the following using; A CIP SVC or PVC connection is created per CIP instance.
HiSpeed Switch Troubleshooting Guide 11-8 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Troubleshooting CIP Problem: I’ve created a CIP service but still cannot connect to the ATM network. Solution: Use the following solutions: Verify that the CIP service has been created, admin status is e...
Page 80 - Troubleshooting PTOP; I’ve created a PTOP service but cannot connect to the ATM network.
HiSpeed Switch Troubleshooting Guide 11-10 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Troubleshooting PTOP Problem: I’ve created a PTOP service but cannot connect to the ATM network. Solution: Use the following solutions: Verify that the PTOP service has been created, admin status is ena...
Page 82 - Troubleshooting Trunking
HiSpeed Switch Troubleshooting Guide 11-12 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Troubleshooting Trunking Problem: I’ve created a Trunking service but cannot connect to the ATM network. Solution: Use the following solutions: Verify that the Trunking service has been created, admin s...
Page 83 - A Trunk SVC or PVC connection is created per Trunk instance.; Verify all ATM Trunk ports are in a ‘Forwarding’ state using; Depending on Spanning Tree, this process may take up to 20 seconds.
Basic ATM Concepts US7070447-001, Rev 01 11-13 Draft Level—Hitachi Confidential Verify the following using /ATM/SHOW/connection: – OAM is up. – SSCOP, and ILMI is up. (for SVC only) – A Trunk SVC or PVC connection is created per Trunk instance. – ATM port connection and signaling. Operational status...
Page 84 - Displays all active ATM circuits
HiSpeed Switch Troubleshooting Guide 11-14 US7070447-001, Rev 01 Draft Level—Hitachi Confidential CLI Commands /ATM/SHOW >connection Displays all active ATM circuits /ATM/SHOW >port Displays ATM port , Signaling, and ILMI configurations /ATM/SHOW >lec , lec <lec#> Displays all or a sp...
Page 85 - FDDI Concepts; HS150 on an FDDI network
US7070447-001, Rev 01 12- 1 Chapter 12 FDDI Concepts FDDI employes a dual ring topology using two counter-rotating fiber rings: a primary and secondary. Data travels on the primary ring while the secondary backup ring is utilized if the primary ring fails. The data rate is 100 Mbps based on a timed-...
Page 86 - HiSpeed FDDI Uplink; FDDI Uplink Module installed in an HS150
HiSpeed Switch Troubleshooting Guide 12-2 US7070447-001, Rev 01 Draft Level—Hitachi Confidential In a normal ring operation, an FDDI station captures a free token and transmits completely unless the token holding timer (THT) expires. As the frame traverses the ring, every station examines the frame ...
Page 87 - Cable Connections; SAS cable connections
FDDI Concepts US7070447-001, Rev 01 12-3 Draft Level—Hitachi Confidential The FDDI Uplink module provides fiber optic connectivity between switched 10/100 Ethernet networks and an FDDI backbone network. Cable Connections The FDDI Uplink provides two SC connector ports allowing for both a (Single Att...
Page 88 - Filtering; LED States; LED Status
HiSpeed Switch Troubleshooting Guide 12-4 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Observing LEDs Table 2-1 provides information about what the LEDs mean in various states FDDI Bridge Modes The HiSpeed switch can operate in any of the following bridging modes: ❒ Filtering ❒ Forwarding ...
Page 89 - Filtering Mode; FDDI Troubleshooting Tips; FDDI Filtering is the default configuration mode.; With Spanning Tree enabled, verify that a virtual port; or
FDDI Concepts US7070447-001, Rev 01 12-5 Draft Level—Hitachi Confidential Filtering Mode With FDDI Filtering, packets between FDDI-native devices are filtered at the FDDI Uplink, not at the switch’s bridging table. This method of filtering reduces the burden on the HiSpeed processor. If the FDDI rin...
Page 90 - Troubleshooting FDDI:; Verify that physical port 34 is active using; It is important not to interrupt the boot up sequence during this
HiSpeed Switch Troubleshooting Guide 12-6 US7070447-001, Rev 01 Draft Level—Hitachi Confidential ❒ For AppleTalk users, must be running software version 1.3.28 or later. ❒ FDDI Port service can only be bounded to VLAN 1. RIP must be ‘active’ to route traffic from one VLAN to another across FDDI. ❒ T...
Page 91 - Cannot ping another VLAN over FDDI.; Verify that all routes are learned using; RIP is active on all VLANs.; I cannot ping to some stations via FDDI.
FDDI Concepts US7070447-001, Rev 01 12-7 Draft Level—Hitachi Confidential Problem: I’m having a communication problem with Platelike over FDDI . Solution: Use the following solutions: Verify that you are running firmware version 1.3.28 or above. In the CLI, enter the ‘vsys’ command. If not, upgrade ...
Page 92 - Traffic through the FDDI port seems to slow and/or hang.
HiSpeed Switch Troubleshooting Guide 12-8 US7070447-001, Rev 01 Draft Level—Hitachi Confidential Problem: Traffic through the FDDI port seems to slow and/or hang. Solution: There is currently an issue with the FDDI driver and buffer management. Engineering is actively working to resolve the problem....