Cabletron Systems ELS10-26TX manual Chapter ELS10-26 Diagnostics and Troubleshooting

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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 ELS10-26 unit. Built- in diagnostic capabilities include:

•System-wide power-up diagnostics, which are run every time the system is powered up or reset.

5.1 POWER-UP DIAGNOSTICS

The ELS10-26 performs an extensive set of diagnostic self-tests whenever any of the following events occur:

•Power-up

•Reset using the front panel Reset button (a hard reset)

•Reset via the NMS (a soft reset)

•Automatic reset in response to a non-recoverable failure

The power-up diagnostics test processors, memory, and other critical hardware components of the ELS10-26. All diagnostic software is stored in non-volatile memory.

5.1.1 Power-up LED Sequence

When you power-up the ELS10-26, the following occurs:

1.All LEDs turn on for one second.

2.The Power (Pwr) LED and all of the status LEDs remain on.

3.The CPU LED starts flashing.

4.All LEDs on ports 1 - 24 will go on in sequence and then go out.

5-1

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Contents ELS10-26 User Guide Page FCC Notice DOC Notice Cabletron Software Program License Declaration of Conformity Contents Monitoring and Managing Your ELS10-26 ContentsAppendix a Technical Specifications ELS10-26 Diagnostics and TroubleshootingAppendix B Glossary Contents Viii Chapter Introduction About this Manual BBS Getting HelpDocument Conventions Related Documentation ELS10-26TX Front Panel OverviewSmartSTACK 10 ELS10-26 Architecture OSI Reference Model Store and Forward SwitchingDiscarding Local Traffic Typical Switching ApplicationSmartSTACK 10 ELS10-26 Bridge Address Table Spanning Tree AlgorithmIntroduction Packet Capturing and Monitoring SmartSTACK 10 ELS10-26 Port MonitoringSmartSTACK 10 ELS10-26 Sample Applications SmartSTACK 10 ELS10-26 Trunking with 10 Mbps Ports SmartSTACK 10 ELS10-26 TrunkingSmartSTACK 10 ELS10-26 Backbone Configuration SmartSTACK 10 ELS10-26 Fast EthernetSmartSTACK 10 ELS10-26 Trunking with 100 Mbps Ports Virtual Workgroups Traffic Workgroup a Workgroup B Local Console Manager Command Syntax Conventions Help Basic LCM CommandsELS10-26 Local Console Manager Exit or Logout EraseTraplog ELS10-26 Front Panel Chapter Unpacking and Installing Your ELS10-26Reset Switch Status LEDs ACT Describes the ELS10-26 buttons Installing AN FepimInstalling an Fepim Rack-mounting an ELS10-26 Installing the ELS10-26Attaching Rackmount Brackets Checking the POWER-UP Diagnostics Sequence Connecting to the Network Connecting the Local Console Manager10BASE-T/ 100BASE-TX Connecting UTP CablesCable Pinouts RJ45 Crossover Cable Connecting a UTP Segment to the FE-100TXFE-100TX Crossover Switch Fiber Optic Network Connection Connecting a Multimode Segment to the FE-100FXFE-100FX Port Unpacking and Installing Your ELS10-26 Unpacking and Installing Your ELS10-26 Spectrum Spel Spma Chapter Configuring Your ELS10-26Assigning IP Addresses Type ipaddr PORT-NUMBER IP Address Deleting an IP Address Displaying IP AddressesChanging a Subnet Mask To change the subnet mask, at the LCM prompt Enabling BridgingDisplaying Bridging Functions Disabling BridgingEnabling Trunking Trunk Connections Trunk GroupsTrunk Groups Disabling Trunking Display could look like the following Displaying Trunking StatusEnabled, Rip listening Enabling Port Monitoring Displaying Monitoring Status Disabling MonitoringEnabled, Rip listening Defining Virtual Workgroups Defining and Deleting WorkgroupsLCM responds with the following display Assigning a Community Name Configuring BROADCAST/MULTICAST Storm Protection System Contact Modifying MIB VariablesSystem Location System NameCommunity Names Aging Parameter Set Community NameELS10-26 Management Tools Chapter Monitoring and Managing Your ELS10-26ELS10-26 Statistics System Statistics Gathering StatisticsEthernet Port Statistics Displaying Status Using LCM to Check ELS10-26 StatusEnabled, Rip listening Displaying MAC Addresses To display all MAC addresses, at the LCM prompt LCM would display Displaying Manufacturing InformationManaging the ELS10-26 Using LCM to Manage the ELS10-26Enabling a Port Disabling a PortNoRIP Option Changing a Community Name Setting the Baud Rate Setting a Reboot Time POWER-UP Diagnostics Chapter ELS10-26 Diagnostics and TroubleshootingPower-up LED Sequence Software Checksum Comparison Specific Power-up TestsResponses to Failures AT POWER-UP Power-up Diagnostics ResultsStatus and Activity Indicators ELS10-26 Front Panel LEDs LED ELS10-26 does not Power UP TroubleshootingConnectivity Problems 3 ELS10-26 Does Not Respond to NMS 2 ELS10-26 Has RebootedELS10-26 Diagnostics and Troubleshooting Connector Ports Appendix a Technical Specifications ELS10-26 SpecificationsPhysical ElectricalEnvironmental Diagnostic LEDsStandard Support Management Support Address Table SizeRegulatory Compliance Serial Cable PIN Assignments10BASE-T PIN Assignments ConnectorsPin Assignment a STRAIGHT-THROUGH Wiring5 4 3 Rule Crossover WiringFE-100TX Fepim SpecificationsFE-100FX Cable Type Worst Case Budget Typical Budget Address AlarmAddress table AgentBandwidth BackboneBpdu bridge protocol data unit Bps bits per secondData link layer CongestionDatagram Data rate or speedEncapsulation Full wire speedEncode EntityIcmp Internet control message protocol Intelligent bridge/switchIeee InitializationInteroperability InternetworkingIP Internet protocol ISO International Standards OrganizationMask MAC media access controlMbps megabits per second MIB management information basePropagation delay Power budgetOSI Open Systems Interconnection PacketService Rarp reverse address resolution protocolProtocol Protocol suiteSymbol SwitchSynchronous transmission Translating bridgeWAN wide area network UpstreamGlossary Numerics IndexIndex RIP Wiring crossover A-6 Straight-through A-5

ELS10-26TX specifications

Cabletron Systems ELS10-26TX is a high-performance Ethernet switch designed to meet the demands of expanding network architectures. This switch is particularly noted for its robust features, making it suitable for various applications, from small business environments to larger enterprise settings.

One of the main features of the ELS10-26TX is its ability to support 10/100 Mbps auto-sensing Ethernet connections. This versatility allows it to interface seamlessly with existing networks, accommodating both older systems and newer high-speed devices. Its 26 ports provide ample connectivity for a range of devices, enabling users to connect multiple workstations, printers, and servers without any compromise on network performance.

The ELS10-26TX utilizes advanced switching technology, which enables it to dynamically manage data traffic across all connected devices. By employing store-and-forward switching techniques, the device reduces latency while preventing data collisions. This is particularly beneficial in environments where heavy traffic is common, as it ensures reliable communication and efficient data transfer.

In terms of its physical characteristics, the ELS10-26TX features a compact design that allows for easy integration into existing network setups. Its robust hardware ensures durability and longevity, making it a reliable choice for organizations that require uninterrupted network service. Additionally, it supports rack-mountable installation, providing flexibility for various deployment scenarios.

The switch also includes essential management features, such as VLAN support, which allows organizations to segment their networks for improved security and traffic management. With Quality of Service (QoS) capabilities, the ELS10-26TX can prioritize critical data traffic, ensuring that essential applications receive the necessary bandwidth for optimal performance.

Security is another notable characteristic of the ELS10-26TX. The device incorporates several security measures to protect the network from unauthorized access and potential threats. These include port security features, which restrict access to individual switch ports, and network management tools that facilitate monitoring and auditing of network activity.

In summary, the Cabletron Systems ELS10-26TX is a versatile and feature-rich Ethernet switch that can significantly enhance network connectivity and performance. Its combination of speed, management capabilities, and security features makes it suitable for a wide array of network configurations, ensuring that it meets the evolving needs of organizations today and into the future.
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