Page 3 - NOTICE; FCC NOTICE
i NOTICE Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or software de...
Page 4 - DOC NOTICE
Notice ii DOC NOTICE This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant le...
Page 5 - CABLETRON SOFTWARE PROGRAM LICENSE
Notice iii CABLETRON SOFTWARE PROGRAM LICENSE 1. LICENSE. You have the right to use only the one (1) copy of the Program provided in this package subject to the terms and conditions of this License Agreement. You may not copy, reproduce or transmit any part of the Program except as permitted by the ...
Page 6 - DECLARATION OF CONFORMITY
Notice iv DECLARATION OF CONFORMITY Application of Council Directive(s): 89/336/EEC73/23/EEC Manufacturer’s Name: Cabletron Systems, Inc. Manufacturer’s Address: 35 Industrial WayPO Box 5005Rochester, NH 03867 European Representative Name: Mr. J. Solari European Representative Address: Cabletron Sys...
Page 7 - CONTENTS; CHAPTER 1 INTRODUCTION
v CONTENTS CHAPTER 1 INTRODUCTION 1.1 ABOUT THIS MANUAL ........................................................................ 1-11.2 GETTING HELP ....................................................................................... 1-21.4 RELATED DOCUMENTATION .....................................
Page 8 - Contents; CHAPTER 4 MONITORING AND MANAGING
vi Contents 3.10 DISPLAYING MONITORING STATUS ...........................................3-123.11 DEFINING AND DELETING WORKGROUPS ..............................3-143.12 ASSIGNING A COMMUNITY NAME .............................................3-163.13 CONFIGURING BROADCAST/MULTICAST STORM PROTECTION ...
Page 9 - CHAPTER 5 ELS10-26 DIAGNOSTICS AND
Contents vii CHAPTER 5 ELS10-26 DIAGNOSTICS AND TROUBLESHOOTING 5.1 POWER-UP DIAGNOSTICS .................................................................. 5-1 5.1.1 Power-up LED Sequence .............................................................. 5-15.1.2 Specific Power-up Tests ...................
Page 11 - The contents of each chapter are described below.; Introduction; , outlines the contents of this manual; Unpacking and Installing Your ELS10-26; to; Monitoring and Managing Your ELS10-26
1-1 CHAPTER 1 INTRODUCTION 1.1 ABOUT THIS MANUAL This manual is for system administrators responsible for configuring, monitoring, and maintaining the SmartSTACK 10 ELS10-26TX. You should have a familiarity with networking concepts and principles. In addition, a basic understanding of SNMP is helpfu...
Page 12 - Diagnostics and Troubleshooting; , provides a glossary of terms both specific
1-2 Introduction • Chapter 5, ELS10-26 Diagnostics and Troubleshooting , describes the SmartSTACK 10 ELS10-26 diagnostics and provides information on troubleshooting common problems. • Appendix A, Technical Specifications , provides the SmartSTACK 10 ELS10-26 specifications and basic cabling pin ass...
Page 13 - DOCUMENT CONVENTIONS; Current Number of Learned Addresses: 133; status
Introduction 1-3 Before calling Cabletron Systems Global Call Center, have the following information ready: • Your Cabletron Systems contract number • A description of the failure • A description of any action(s) already taken to resolve the problem (e.g., changing mode switches, rebooting the unit,...
Page 14 - RELATED DOCUMENTATION; Getting Started with the SmartSTACK 10 ELS10-26
1-4 Introduction and an IP address to execute the ipaddr <port #> <IP address> command: ELS10-26 > ipaddr 6 192.138.217.40 Field value options appear in bold typeface. The following conventions are also used in this document: 1.4 RELATED DOCUMENTATION The following documentation may a...
Page 15 - • Provides dedicated bandwidth for each network connected to
Introduction 1-5 1.5 OVERVIEW The SmartSTACK 10 ELS10-26TX is an intelligent Ethernet-to-Ethernet switch that is configured with 25 IEEE 802.3 10BASE-T Full Duplex Ethernet ports, one fixed 100BASE-TX copper connection, one port supporting either a copper or fiber 100 Mbps FEPIM (Fast Ethernet Port ...
Page 16 - Bridge Address Table
1-6 Introduction • Operates in either Half Duplex or Full Duplex modes on all ports. • Implements the Spanning Tree protocol (802.1d). • Configured with factory-set defaults for immediate plug-and- play capability (IP address is not configured at factory). In addition, the SmartSTACK 10 ELS10-26 off...
Page 17 - Store and Forward Switching; Data Link
Introduction 1-7 new devices to the network, change device addresses, and remove devices from the network without having to reconfigure the SmartSTACK 10 ELS10-26. The Open System Interconnection (OSI) Reference Model, developed by the International Standards Organization (ISO), identifies the level...
Page 18 - Discarding Local Traffic; local traffic; Figure 1-3. Typical Switching Application
1-8 Introduction network and when it is granted permission to transmit. In addition, full store and forward switching ensures data integrity, thus preventing network error conditions from being generated throughout the network. Discarding Local Traffic The SmartSTACK 10 ELS10-26 checks all incoming ...
Page 19 - Spanning Tree Algorithm
Introduction 1-9 By forwarding only packets addressed to devices on other network segments, the SmartSTACK 10 ELS10-26 reduces unnecessary traffic and thereby enhances the overall performance of the network. Note: If the packet address is not found in the Bridge Address Table, it will be forwarded (...
Page 20 - Each dynamic entry includes:
1-10 Introduction If a packet’s address is not already stored in the Bridge Address Table, the SmartSTACK 10 ELS10-26 adds the learned address, associated segment number, and a timer value indicating the age of the observation. Consequently, the SmartSTACK 10 ELS10-26 knows the address and associate...
Page 21 - Packet Capturing and Monitoring
Introduction 1-11 1.5.3 SmartSTACK 10 ELS10-26 Port Monitoring Port monitoring allows the SmartSTACK 10 ELS10-26 to redirect network traffic (including MAC layer errors) from one port to the port monitoring port (MONX port), in effect “mirroring” all network traffic to this port. This feature allows...
Page 25 - Virtual Workgroups
Introduction 1-15 Figure 1-7 illustrates how the SmartSTACK 10 ELS10-26 can be used in a backbone network configuration using increased bandwidth of the Fast Ethernet configuration. Figure 1-7. SmartSTACK 10 ELS10-26 Backbone Configuration Virtual Workgroups The SmartSTACK 10 ELS10-26 allows you to ...
Page 26 - Figure 1-8. Multiple Ethernet Segments Sharing 10 Mbps Bandwidth; Repeater
1-16 Introduction Figure 1-8 shows two Ethernet segments, A and B, that do not include a SmartSTACK 10 ELS10-26. Figure 1-8. Multiple Ethernet Segments Sharing 10 Mbps Bandwidth Each host on segments A and B is limited to sharing a network bandwidth of 10 Mbps. A B Repeater Traffic Traffic
Page 27 - Figure 1-9. Using the SmartSTACK 10 ELS10-26 to Create Virtual; Workgroup A
Introduction 1-17 Figure 1-9 shows two Ethernet segments that take advantage of the virtual workgroup feature of the SmartSTACK 10 ELS10-26 and the increased bandwidth applied to each A and B host. Figure 1-9. Using the SmartSTACK 10 ELS10-26 to Create Virtual Workgroups to Help Optimize Bandwidth A...
Page 28 - LOCAL CONSOLE MANAGER; • LCM commands used for configuring the SmartSTACK 10
1-18 Introduction As illustrated in the previous diagram, virtual workgroups allow you to associate multiple ports and define a workgroup. In reality, you are assigning workgroup IDs to SmartSTACK 10 ELS10-26 ports. 1.6 LOCAL CONSOLE MANAGER The Local Console Manager (LCM) is a command-line interfac...
Page 29 - bridge
Introduction 1-19 1.6.1 Command Syntax Conventions The following conventions apply as you use LCM commands: • Press the Enter key to execute a command after you type it in. • A port range is either a single port number, or a list of port numbers separated by commas or hyphens. For example, 3 is port...
Page 30 - Help; help; command is displayed below.
1-20 Introduction 1.6.2 Basic LCM Commands If you are going to manage the SmartSTACK 10 ELS10-26 using LCM, you first must connect the SmartSTACK 10 ELS10-26 to an ASCII terminal or terminal emulator. See Section 2.5, Connecting the Local Console Manager , for instructions. When you want to use LCM,...
Page 32 - Erase; Entering; erase; to erase the current SmartSTACK 10 ELS10-26; Exit or Logout; exit; command is functionally; logout; Traplog; The unit’s spanning tree maximum age has changed.
1-22 Introduction Erase Entering erase to erase the current SmartSTACK 10 ELS10-26 configuration returns all parameters to the default values. Exit or Logout Logs you out of LCM. (The exit command is functionally equivalent to the logout command.) Traplog Displays the traps messages captured by the ...
Page 33 - • One AC power cord
2-1 CHAPTER 2 UNPACKING AND INSTALLING YOUR ELS10-26 Carefully unpack the ELS10-26 from the shipping carton and inspect it for possible damage. If any damage is evident, contact your supplier. The shipping carton contains the following: • The ELS10-26 unit • One AC power cord • Console Cable kit • T...
Page 35 - LED
Unpacking and Installing Your ELS10-26 2-3 Table 2-1. Meaning of ELS10-26 LEDs LED Meaning Port Status ModeTX RX ACT COL FDX 100 MON USR On – Indicates port is transmitting a packet. On – Indicates port is receiving a packet. On – Indicates port is transmitting or receiving. On – Indicates a collisi...
Page 36 - INSTALLING AN FEPIM; Remove the two screws securing the plate on the side of the; Button; Status
2-4 Unpacking and Installing Your ELS10-26 Table 2-2 describes the ELS10-26 buttons. 2.2 INSTALLING AN FEPIM The ELS10-26 provides a slot for a Cabletron FEPIM (Fast Ethernet Port Interface Module). The ELS10-26 is shipped without an FEPIM. To install an FEPIM, follow the procedure below: 1. Remove ...
Page 38 - Consideration; Temperature
2-6 Unpacking and Installing Your ELS10-26 2.3 INSTALLING THE ELS10-26 Rack-mounting an ELS10-26 Table 2-3 describes some general considerations you should be aware of before mounting a ELS10-26 in a rack assembly. Table 2-3. General Considerations for Mounting an ELS10-26 Consideration Discussion T...
Page 39 - Attach the rackmount brackets to either side of the ELS10-26; Figure 2-3. Attaching Rackmount Brackets; Secure the ELS10-26 with the rackmount fasteners by inserting
Unpacking and Installing Your ELS10-26 2-7 The ELS10-26 can be rack-mounted in a standard 19-inch equipment cabinet. To mount the ELS10-26 in a rack assembly, apply the following steps: 1. Attach the rackmount brackets to either side of the ELS10-26 chassis, as shown in Figure 2-3. Figure 2-3. Attac...
Page 40 - Once the ELS10-26 is installed, plug the AC power cord into; SEQUENCE; In addition, the Port Link LEDs will turn on for those ports
2-8 Unpacking and Installing Your ELS10-26 4. Once the ELS10-26 is installed, plug the AC power cord into the AC power connector on the rear of the ELS10-26 chassis. Plug the other end of the power cord into a three-prong grounded outlet. 2.4 CHECKING THE POWER-UP DIAGNOSTICS SEQUENCE Before connect...
Page 41 - CONNECTING THE LOCAL CONSOLE MANAGER; Connect your ASCII terminal or terminal emulator to the out-; CONNECTING TO THE NETWORK
Unpacking and Installing Your ELS10-26 2-9 2.5 CONNECTING THE LOCAL CONSOLE MANAGER The Local Console Manager (LCM) is a command-line interface for configuring, monitoring, and managing the ELS10-26 through the out-of-band RS232C connection on the front panel. To connect the LCM: 1. Connect your ASC...
Page 42 - Connect a twisted pair segment to the ELS10-26 as follows:; Verify that a Link exists by checking that the port LINK LED is
2-10 Unpacking and Installing Your ELS10-26 Refer to Section 2.6.3 to make a fiber optic connection to an FE-100FX. 2.6.1 Connecting UTP Cables Before connecting a segment to the ELS10-26, check each end of the segment to verify wire crossover. Connect a twisted pair segment to the ELS10-26 as follo...
Page 43 - a. Check that the 10BASE-T device at the other end of the; TO
Unpacking and Installing Your ELS10-26 2-11 a. Check that the 10BASE-T device at the other end of the twisted pair segment is ON and connected to the segment. b. Verify that the RJ45 connectors on the twisted pair segment have the proper pinouts (Figure 2-7) and check the cable for continuity. Figur...
Page 45 - Fiber Optic Network Connection
Unpacking and Installing Your ELS10-26 2-13 d. Make sure that the twisted pair connection meets dB loss and cable specifications. e. Confirm that the crossover switch is in the correct position. f. Confirm that the devices on each end of the link are using the correct speed (use the LCM status comma...
Page 47 - b. Verify proper crossing over of fiber strands between the
Unpacking and Installing Your ELS10-26 2-15 b. Verify proper crossing over of fiber strands between the applicable port on the ELS10-26 and the fiber optic device at the other end of the fiber optic link segment. c. Verify that the fiber connection meets the dB loss specifications. If a Link has not...
Page 49 - CHAPTER 3; • SPECTRUM
3-1 CHAPTER 3 CONFIGURING YOUR ELS10-26 The ELS10-26 does not require any additional configuration to operate as a standard, transparent switch. However, if you want to use any of the ELS10-26’s advanced functions, you must first assign an IP (Internet Protocol) address to any of the ports on the EL...
Page 50 - ASSIGNING IP ADDRESSES; You can use the LCM; command to erase all configuration
3-2 Configuring Your ELS10-26 The following sections describe how to configure the optional parameters of the ELS10-26 using LCM commands, including: • Assigning IP addresses • Enabling and disabling bridging • Displaying bridging functions • Enabling and disabling trunking • Displaying trunking sta...
Page 51 - ipaddr
Configuring Your ELS10-26 3-3 • Class B addresses are used for medium sized networks. The first two bytes identify the network and the last two identify the node. The first byte of a class B address must be in the range 128-191. The address 128.150.50.10 identifies node 50.10 on network 128.150. • C...
Page 52 - LCM displays the current IP address table, for example:; IP Address
3-4 Configuring Your ELS10-26 3.1.1 Displaying IP Addresses To display IP addresses, subnet masks, and MAC addresses of all ports on the ELS10-26 you are configuring, at the LCM prompt: 1. Type ipaddr LCM displays the current IP address table, for example: 3.1.2 Deleting an IP Address To delete an I...
Page 53 - ENABLING BRIDGING; BPDU; Selecting the
Configuring Your ELS10-26 3-5 To change the subnet mask, at the LCM prompt: 1. Type ipaddr <PORT-NUMBER> <IP ADDRESS> <SUBNET MASK> For example, ipaddr 6 192.138.217.40 255.255.240.0 would set the subnet mask for port 6 to 255.255.240.0. LCM responds by redisplaying the current add...
Page 54 - bridge 2 on; would enable bridging on port 2.; DISABLING BRIDGING; bridge 2 off; would disable bridging on port 2.; DISPLAYING BRIDGING FUNCTIONS; would display the; Port 2 bridging: Transparent Bridging
3-6 Configuring Your ELS10-26 Using LCM to enable bridging for a port or port range, at the LCM prompt: 1. Type bridge [PORT-RANGE [{off|on|noBPDU}]] For example, bridge 2 on would enable bridging on port 2. LCM responds: 3.3 DISABLING BRIDGING To turn off the bridging function for a port or port ra...
Page 55 - ENABLING TRUNKING; Port 27 bridging: off
Configuring Your ELS10-26 3-7 You could also type bridge [PORT-RANGE] to look at a specific range of ports. For example bridge 2-4 would display bridging functions for ports 2, 3, and 4. 3.5 ENABLING TRUNKING If your network configuration requires you to connect two or more ELS10-26s (or other devic...
Page 56 - Trunk Groups
3-8 Configuring Your ELS10-26 Figure 3-1. Trunk Connections Trunk Groups Each set of connections between two ELS10-26s is called a Trunk Group. You can create two Trunk Groups, each having up to eight ports, to interconnect your ELS10-26s. For example, if you have three ELS10-26s (A, B, and C), as s...
Page 57 - B Trunk Group could have just two ports per ELS10-26. If; Using LCM or a NMS, turn on trunking for the connected
Configuring Your ELS10-26 3-9 Figure 3-2. Trunk Groups To enable trunking for the example shown, perform the following: 1. Connect the desired ports of the ELS10-26s together using 10BASE-T crossover cables. If ELS10-26 A is handling only a small number of users, the A to B Trunk Group could have ju...
Page 58 - DISABLING TRUNKING
3-10 Configuring Your ELS10-26 For ELS10-26 B, at the LCM prompt: b. Type trunk 3-10,14-15 on For ELS10-26 C, at the LCM prompt: c. Type trunk 3-10 on Each ELS10-26 determines which ports are part of which Trunk Group. After Trunk Group configuration, the ELS10-26s complete the standard 802.1D Spann...
Page 59 - DISPLAYING TRUNKING STATUS; The display could look like the following:
Configuring Your ELS10-26 3-11 3.7 DISPLAYING TRUNKING STATUS To check the status of your current trunking configuration, at the LCM prompt: 1. Type trunk <PORT-RANGE> The display could look like the following: Note: IP Addresses are not required for trunking to function. To check the status f...
Page 61 - • Perturbed — Trunking is enabled, and a good trunk connection; ENABLING PORT MONITORING; To enable port monitoring on the ELS10-26:; mirror 2 Tx; This will turn on monitoring for packets transmitted on port 2.
Configuring Your ELS10-26 3-13 • Perturbed — Trunking is enabled, and a good trunk connection has been established. However, the forwarding of data packets is temporarily suspended to allow for a change in the membership of the Trunk Group. 3.8 ENABLING PORT MONITORING The ELS10-26 allows you to mon...
Page 62 - DISABLING MONITORING; To turn off monitoring, at the LCM prompt:; mirror 2 off; DISPLAYING MONITORING STATUS; Port Mirroring: Port 2 is mirroring Tx traffic
3-14 Configuring Your ELS10-26 3.9 DISABLING MONITORING To turn off monitoring, at the LCM prompt: 1. Type Mirror <PORT> off For example, mirror 2 off 3.10 DISPLAYING MONITORING STATUS To check the status of your current monitoring configuration, at the LCM prompt: 1. Type mirror <PORT> ...
Page 64 - DEFINING AND DELETING WORKGROUPS
3-16 Configuring Your ELS10-26 3.11 DEFINING AND DELETING WORKGROUPS The ELS10-26 allows you to define logical groups of associated ports (virtual workgroups) to provide a more efficient flow of traffic across your Ethernet network. Virtual workgroups offer you the ability to limit broadcasts to log...
Page 65 - workgroup
Configuring Your ELS10-26 3-17 The LCM commands used to create the previous configuration are as follows: 1. To create workgroup A on ports 3, 4, 5, 13, and 16: ESL10-26 > workgroup A 3-5,13,16 LCM responds with the following display: Name: a Ports: 3, 4, 5, 13, 16 Info: all 2. To create workgrou...
Page 66 - ASSIGNING A COMMUNITY NAME; SNMP
3-18 Configuring Your ELS10-26 To display information about a specific workgroup, at the LCM prompt: 1. Type workgroup NAME To create or modify a workgroup, at the LCM prompt: 1. Type workgroup NAME PORT-RANGE INFO To delete a workgroup, at the LCM prompt: 1. Type workgroup NAME delete To create or ...
Page 67 - LCM prompts you to verify the new community name by; CONFIGURING BROADCAST/MULTICAST STORM
Configuring Your ELS10-26 3-19 5. LCM prompts you to verify the new community name by retyping it. 6. Retype the new community name. 3.13 CONFIGURING BROADCAST/MULTICAST STORM PROTECTION The ELS10-26 provides automatic protection against broadcast/multicast storms. Multicast storms are excessive bro...
Page 68 - lxifTxStormCnt; – specifies the maximum number of multicasts; lxiTxStormTime; – specifies the period of time that the maximum; MODIFYING MIB VARIABLES
3-20 Configuring Your ELS10-26 • lxifTxStormCnt – specifies the maximum number of multicasts that can be broadcast within the given time. • lxiTxStormTime – specifies the period of time that the maximum number of multicasts can be broadcasted. Refer to the ELS10-26 MIB Reference Guide for a complete...
Page 70 - Set Community Name; The set community name variable (; lxadminAnyPass; community name variable (; lxadminGetPass; ) must be set to the value; dot1dTpAgingTime
3-22 Configuring Your ELS10-26 Set Community Name The set community name variable ( lxadminAnyPass ) and get community name variable ( lxadminGetPass ) must be set to the value of the community name used by the SNMP manager for performing either set or get operations. A zero length community name me...
Page 73 - clearstat
Monitoring and Managing Your ELS10-26 4-3 • The time since a topology change was last initiated. • The physical location of the ELS10-26. • The name and address of the contact person for the ELS10-26. • The name of the ELS10-26. • The current number of dynamic (learned) addresses. 4.2.3 Ethernet Por...
Page 74 - You can also use the; command to display status for; and specifying a port
4-4 Monitoring and Managing Your ELS10-26 4.3 USING LCM TO CHECK ELS10-26 STATUS The LCM commands that enable you to quickly check on the status of the ELS10-26 include: • Status • Address display • Ipaddr • Ident These LCM commands are described in the sections that follow. 4.3.1 Displaying Status ...
Page 76 - addresses display
4-6 Monitoring and Managing Your ELS10-26 If you do not want to view the status of port 2, use the Ctrl-C keys to return to the LCM prompt. You can view the status for multiple of ports by typing status and indicating the range of port numbers, for example status 2-6 . 4.3.2 Displaying MAC Addresses...
Page 77 - To display all MAC addresses, at the LCM prompt:; addresses display any; If you do not specify; any; , only the learned addresses are displayed.; , LCM would display the following
Monitoring and Managing Your ELS10-26 4-7 To display all MAC addresses, at the LCM prompt: 1. Type addresses display any LCM responds with a list of all MAC addresses, their associated ports, the type, age, and number of frames from and to that address. If you do not specify any , only the learned a...
Page 78 - Displaying Manufacturing Information; ident
4-8 Monitoring and Managing Your ELS10-26 LCM would display: The ipaddr command displays the IP addresses, subnet masks, and MAC addresses of all ELS10-26 ports. At the LCM prompt: 1. Type ipaddr LCM displays the current IP address table, for example. 4.3.3 Displaying Manufacturing Information The i...
Page 80 - to find the port number you are using
4-10 Monitoring and Managing Your ELS10-26 4.5.1 Disabling a Port There can be times when you need to disable a specific Ethernet port, for example, after you have determined that there is faulty equipment. Disabling a port effectively stops all bridging functions for that port. Disabled ports do no...
Page 81 - noRIP Option; The; noRIP; option allows you to turn off the routing information; Rip listening
Monitoring and Managing Your ELS10-26 4-11 For example, enable 7-9 would enable ports 7, 8, and 9. LCM responds: noRIP Option The Routing Information Protocol (RIP) is one of the protocols that allows the ELS10-26 to build an accurate, current routing table. This table includes the networks it knows...
Page 82 - sxadminAnyPass; can then enter a community name to perform any; To assign a community name, at the LCM prompt:; community; Port IP Address
4-12 Monitoring and Managing Your ELS10-26 LCM displays the current IP address table, for example: To change the subnet mask, at the LCM prompt: 1. Type ipaddr <PORT-NUMBER> <IP ADDRESS> <SUBNET MASK> For example, ipaddr 6 192.138.217.40 255.255.240.0 would set the subnet mask for ...
Page 83 - To display the current baud rate setting, at the LCM prompt:; baud
Monitoring and Managing Your ELS10-26 4-13 3. Enter the new community name. LCM prompts you to verify the new community name by retyping it. 4. Retype the new community name. 4.5.5 Setting the Baud Rate You can set the baud rate for your LCM console connection. The options for baud rate include: • 1...
Page 84 - To change the baud rate setting, at the LCM prompt:; Reboot pending in 59 seconds.
4-14 Monitoring and Managing Your ELS10-26 To change the baud rate setting, at the LCM prompt: 1. Type baud <baud rate> For example, baud 9600 would set the baud rate to 9600. LCM responds: 4.5.6 Setting a Reboot Time You can enter the number of seconds the ELS10-26 waits before rebooting. At ...
Page 85 - • System-wide power-up diagnostics, which are run every time
5-1 CHAPTER 5 ELS10-26 DIAGNOSTICS AND TROUBLESHOOTING The ELS10-26 incorporates built-in diagnostic and testing capabilities which are convenient to use and cause minimal or no disruption to the rest of the operational network. These capabilities are effective for isolating problems within the ELS1...
Page 86 - ELS10-26 Diagnostics and Troubleshooting
5-2 ELS10-26 Diagnostics and Troubleshooting 5. After several more seconds, the CPU LED will stay on, indicating that the power-up diagnostics sequence is complete. In addition, the Port Link LEDs will turn on for those ports with good links and the Segment Status LEDs will turn on (or flash) when t...
Page 87 - STATUS AND ACTIVITY INDICATORS
ELS10-26 Diagnostics and Troubleshooting 5-3 The operational parameters of the ELS10-26 software are also protected by a checksum comparison. When the ELS10-26 reboots, if the operational parameters of the ELS10-26 fail a checksum test due to a power failure in the midst of a previous update, the EL...
Page 89 - Description of ELS10-26 Buttons
ELS10-26 Diagnostics and Troubleshooting 5-5 Table 5-2 describes the ELS10-26 buttons. Table 5-1. Meaning of ELS10-26 LEDs LED Meaning Port Status ModeTXRXACTCOLFDX 100 MON USR On – Indicates port is transmitting a packet.On – Indicates port is receiving a packet.On – Indicates port is transmitting ...
Page 94 - Technical Specifications; Environmental
A-2 Technical Specifications Environmental Operating temperature 5 ° to 40 ° C (41 ° to 104 ° F) Storage temperature -30 ° to 73 ° C (-22 ° to 164 ° F) Operating relative humidity 5% to 90% (non-condensing) Diagnostic LEDs Individual port link status Individual port segment status Segment status, sp...
Page 95 - Address Table Size
Technical Specifications A-3 • Transparent Bridging with Spanning Tree • Ethernet Version 2 • EIA RS232C (DTE-to-DCE Interface Specification) • EIA RS-310-C (Rack-mount Specification) Address Table Size 979 dynamic entries Management Support • MIB II, 802.1d, 802.3, and Cabletron Enterprise MIB • Ca...
Page 96 - Connectors
A-4 Technical Specifications Table A-2. DB9 Pin Assignments A.3 10BASE-T PIN ASSIGNMENTS An Ethernet twisted-pair link segment requires two pairs of wires. Each wire pair is identified by solid and striped colored wires. For example, one wire in the pair might be red and the other wire, red with whi...
Page 97 - Pin
Technical Specifications A-5 Each twisted-pair link segment must have a male connector attached to both ends. According to the 10BASE-T specification, pins 1 and 2 on the connector are used for receiving data; pins 3 and 6 are used for transmitting data, as shown in Table A-3. a. The “+” and “-” sig...
Page 98 - A.5 CROSSOVER WIRING; • Up to five segments in series; Table A-5. Crossover RJ45 Pin Assignments
A-6 Technical Specifications A.5 CROSSOVER WIRING Two ELS10-26s can communicate only if the transmitter on one unit is connected to the receiver on the other unit. This reversal, or crossover function, can be implemented either in the wiring or in the device itself. When connecting ELS10-26s, a cros...
Page 99 - A.7 FEPIM SPECIFICATIONS; side, the pairs are
Technical Specifications A-7 A.7 FEPIM SPECIFICATIONS The ELS10-26 uses a Fast Ethernet Interface Module (FEPIM) to provide front panel cable connections. FEPIMs are user-installable. See Section 2.2, Installing an FEPIM. FE-100TX The FE-100TX is an RJ45 connector supporting Unshielded Twisted Pair ...
Page 100 - Cable Type; m fiber
A-8 Technical Specifications Figure A-3. FE-100FX The transmitter power levels and receive sensitivity levels listed are Peak Power Levels after optical overshoot. A Peak Power Meter must be used to correctly compare the values given above to those measured on any particular port. If Power levels ar...
Page 101 - alarm
B-1 APPENDIX B GLOSSARY addressA set of characters that uniquely identifies a station, peripheral device, node, or other unit in a network. address tableA database of device addresses and their associated ports maintained by a switch or bridge for use in making data packet forwarding and filtering d...
Page 102 - Glossary
B-2 Glossary backboneThe major, central transmission path for a network. A backbone usually handles high-volume, high-density traffic. Typically a backbone connects various LANs into an integrated network. bandwidthA measure of the amount of traffic a given medium can handle at one time: The communi...
Page 113 - INDEX; Numerics
I-1 INDEX Numerics 10BASE-T connection 2-10 10BASE-T pin assignments A-4 5 - 4 - 3 rule A-6 802.1D Spanning Tree 3-10 A adding IP addresses 3-3 address table dynamic entry 1-10 size A-3 addresses adding IP 3-3 deleting IP 3-4 displaying IP 3-4, 4-8, 4-11 aging time, defined 3-22 assigning community ...
Page 114 - Index
Index I-2 disabling bridging functions 3-6 ports 4-10 trunking 3-10, 3-14 displaying baud rate 4-13 bridge functions 3-6 FastNET 10 status 4-4 IP addresses 3-4, 4-8, 4-11 MAC addresses 4-7 manufacturing information 4-8 Document Conventions 1-3 dynamic entry Bridge Address Table 1-10 E enabling bridg...
