
Chapter 8 Troubleshooting
Problem Solving Using a Subsystems Approach
Cisco SCE 2000 4/8xFE Installation and Configuration Guide
8-14 OL-7826-05
• 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
LED not lit)
• Status is WARNING
(Status LED is
flashing orange)
• Output counters not
incrementing.
CLI command:
• show interface
FastEthernet 0/#
counters
Connector is not connected
to the platform or to the
network.
Reconnect the cable to the FE port
and to network.
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:
show interface
FastEthernet 0/#
counters
Check output of this
command for: “In good
unicast packet” and “Out
unicast packet”. These
counters should be constantly
incrementing.
Auto-negotiation may be
incorrectly configured.
Check auto-negotiation configuration
in the SCE 2000 and in its peers.
• FE link is up (FE
interface link LED is
continuous green and
FE interface Tx LED
is flashing)
• Peer does not receive
traffic from SCE 2000
CLI commands:
• show interface
FastEthernet 0/#
counters
Check output of this
command for: “Out unicast
packet”. This counter should
be constantly incrementing.
show interface
FastEthernet 0/#
Auto-negotiation is disabled
at the SCE 2000 but enabled
at peer.
Check auto-negotiation configuration
in the SCE 2000 and in peer.
• FE link is up (FE
interface link LED is
continuous green)
• No traffic received
(FE interface Rx LED
is not flashing)
No traffic is being
transmitted to the SCE 2000
from its peers.
Check traffic connection at peer.
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