Cisco Systems SCE 2000 4/8xFE manual Troubleshooting the Link Interface Subsystem

Chapter 8 Troubleshooting

Problem Solving Using a Subsystems Approach

•Peer does not receive traffic from SCE 2000 (FE link is lit and Tx LED is flashing)

•FE link is up but not receiving from peer (FE link is lit, but Rx LED is not flashing)

Table 8-7		Troubleshooting the Link Interface Subsystem
Symptom	Diagnostic Action		Possible Cause	Possible Solution
• Link is down. (LINK	CLI command:		Connector is not connected	Reconnect the cable to the FE port
LED not lit)	• show interface		to the platform or to the	and to network.
• Status is WARNING			network.
	FastEthernet 0/#
(Status LED is	counters
flashing orange)
• Output counters not
incrementing.
			FE cable is broken.	Reconnect / replace the cable to the
				FE port.
				If FE counters are incrementing, this
				indicates LED problem. Contact
				customer support.
	CLI commands:		Auto-negotiation may be	Check auto-negotiation configuration
	show interface		incorrectly configured.	in the SCE 2000 and in its peers.
	FastEthernet 0/#
	counters
	Check output of this
	command for: “In good
	unicast packet” and “Out
	unicast packet”. These
	counters should be constantly
	incrementing.
• FE link is up (FE	CLI commands:		Auto-negotiation is disabled	Check auto-negotiation configuration
interface link LED is	• show interface		at the SCE 2000 but enabled	in the SCE 2000 and in peer.
continuous green and			at peer.
FE interface Tx LED	FastEthernet 0/#
is flashing)	counters
• Peer does not receive	Check output of this
	command for: “Out unicast
traffic from SCE 2000
	packet”. This counter should
	be constantly incrementing.
	show interface
	FastEthernet 0/#
• FE link is up (FE			No traffic is being	Check traffic connection at peer.
interface link LED is			transmitted to the SCE 2000
continuous green)			from its peers.
• No traffic received
(FE interface Rx LED
is not flashing)

Cisco SCE 2000 4/8xFE Installation and Configuration Guide

8-14 OL-7826-05