Cabletron Systems ELS10-26TX manual Connecting a UTP Segment to the FE-100TX

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Unpacking and Installing Your ELS10-26

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.

		TO		TO
	ELS10-26 RJ-45 Port			10Base-T Device Port
						TX+
	TX+	1			1	TX+
Note: RX+/RX- and	TX-	2			2	TX-
Note: RX+/RX- and
TX+/TX- must share a
common color pair.	RX+	3			3	RX+
	RX+	3			3	RX+
	RX-	6			6	RX-

Figure 2-6. Cable Pinouts - (RJ45) Crossover Cable

c.Check that the twisted pair connection meets the dB loss and cable specifications.

If a link is not established, contact Cabletron Systems Global Call Center. Refer to Section 1.2, Getting Help, for details.

4. Repeat step 2, above, until all connections have been made.

2.6.2 Connecting a UTP Segment to the FE-100TX

An FE-100-TX installed in port slot 27 is often used to provide a connection between the ELS10-26 and a bridge, router, or switch. Usually, in this conﬁguration, a “straight-through” cable is used and the Fast Ethernet Interface Module crossover switch shown in Figure 2-7 is set to “not crossed over.”

Normally, when connecting devices to like devices, crossing over of the transmit and receive pairs must occur. Before connecting a segment to the FE-100TX, check each end of the segment to

2-11

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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 Electrical Appendix a Technical Specifications ELS10-26 SpecificationsConnector Ports PhysicalEnvironmental Diagnostic LEDsStandard Support Serial Cable PIN Assignments Address Table SizeManagement Support Regulatory Compliance10BASE-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 Agent AlarmAddress Address tableBps bits per second BackboneBandwidth Bpdu bridge protocol data unitData rate or speed CongestionData link layer DatagramEntity Full wire speedEncapsulation EncodeInitialization Intelligent bridge/switchIcmp Internet control message protocol IeeeISO International Standards Organization InternetworkingInteroperability IP Internet protocolMIB management information base MAC media access controlMask Mbps megabits per secondPacket Power budgetPropagation delay OSI Open Systems InterconnectionProtocol suite Rarp reverse address resolution protocolService ProtocolTranslating bridge SwitchSymbol Synchronous transmissionWAN wide area network UpstreamGlossary Numerics IndexIndex RIP Wiring crossover A-6 Straight-through A-5