Troubleshooting The Link Interface Subsystem - Cisco SCE 8000 Installation And Configuration Manual

Chapter 8 Troubleshooting
Table 8-7 Troubleshooting the Management Subsystem (continued)
Symptom
—
Telnet connection terminates
automatically.

Troubleshooting the Link Interface Subsystem

See
In general, the case where no traffic is coming out of the Cisco SCE 8000 is often caused by link
problems or the 10 GBE interface configuration. In some cases, the problem which seems as a transmit
problem could be in the Rx (no traffic is being received by the Cisco SCE 8000 or there is actually no
traffic on the line, which could be a normal situation).
In CLI commands for TenGigabitEthernet interfaces, # stands for the number of the SPA module (Cisco
Note
SCE 8000-SIP subslot). This can be 0 through 3.
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.
—
—
Diagnostic Action
CLI commands:
show access-lists
•
show ip access-class
•
CLI commands:
show line
•
• show line vty timeout
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 SCE 8000. (LINK LED is lit and Tx LED is flashing)
10 GBE link is up but not receiving from peer. (LINK LED is lit, but Rx LED is not flashing)
Diagnostic Action
CLI command:
show interface
•
TenGigabitEthernet
3/#/0 counters
—
—
Problem Solving Using a Subsystems Approach
Possible Cause
Host is not a member of a
valid access list.
Telnet connection may be
timing out.
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.
Cisco SCE8000 GBE Installation and Configuration Guide
Possible Solution
See Initial Setup Parameters,
page 5-3.
See the "Configuring Access
Control Lists (ACLs)" section
in Cisco SCE8000 10GBE
Software Configuration
Guide.
Reconfigure line timeout.
timeout <time in seconds>
Possible Solution
Reconnect the fiber to the 10
GBE port and to network.
Reconnect or replace the fiber
to the 10 GBE port.
Reconnect or replace the fiber
between the 10 GBE port and
the optic bypass module.
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