Troubleshooting The Link Interface Subsystem - Cisco SCE8000 GBE Installation And Configuration Manual

Chapter 8 Troubleshooting

Troubleshooting the Link Interface Subsystem

Check
In general, the case where no traffic is coming out of the Cisco SCE8000 GBE is often caused by link
problems or the GBE traffic interface configuration. Note that in some cases, the problem which seems
as a transmit problem could be in the Rx (no traffic is being received by the Cisco SCE8000 GBE or
there is actually no traffic on the line, which could be a normal situation).
In CLI commands for GigabitEthernet interfaces, /#/# stands for the number of the SPA module
Note
(SCE8000-SIP subslot) (0-3) followed by the port number (0-7).
Problems in the link interface subsystem could be any of the following:
•
•
•
Table 8-8 Troubleshooting the Link Interface Subsystem
Symptom
Link is down. (LINK
•
LED not lit)
Output counters not
•
incrementing.
• GBE link is up (LINK
LED is continuous
green)
No traffic received
•
(GBE interface Rx
LED is not flashing)
OL-19897-02
Table 8-8 to help isolate a problem in the link interface subsystem.
Link is down. (LINK LED not lit and system status is WARNING)
Peer does not receive traffic from Cisco SCE8000 GBE (LINK LED is lit and Tx LED is flashing)
10GBE link is up but not receiving from peer (LINK LED is lit, but Rx LED is not flashing)
Diagnostic Action
CLI command:
show interface
•
GigabitEthernet 3/#/#
counters
Temporarily disconnect optic
bypass module and check
operation. See Cabling the
GBE Line Interface Ports,
page 6-6
Possible Cause
Connector is not connected to
the platform or to the network.
Fiber is broken or damaged.
Connectivity using external
optic bypass is incorrect or
problematic.
Problem with external optic
bypass module.
No traffic is being transmitted to
the Cisco SCE8000 GBE from
its peers.
Cisco SCE8000 GBE Installation and Configuration Guide
Troubleshooting Overview
Possible Solution
Reconnect the fiber to the
GBE port and to network.
Reconnect / replace the fiber
to the GBE port.
Reconnect / replace the fiber
between the GBE port and the
optic bypass module.
Replace the optic bypass
module.
Check traffic connection at
peer.
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