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Catalyst 4500 E-Series Switches Installation Guide
OL-13972-01
Chapter 5 Troubleshooting
Troubleshooting Supervisor Engines
Useful CLI Commands
Some problems can be solved by resetting the supervisor engine. Use the hw-module module <n> reset
power-cycle command to reset a switching module, or remove and re-insert the switching module,
which resets, restarts and power cycles the switching module. Pressing the reset button on the supervisor
engine causes the software to reload, but does not power cycle the supervisor engine.
Note When you power-cycle or remove a supervisor engine in a redundant system the other supervisor engine
becomes the active supervisor and the ports retain connectivity. In a non-redundant system, all of the
switching modules lose connectivity until the supervisor engine is reinserted and completely restarted.
The show diagnostics power-on command may provide useful information for some supervisor engine
problems.
Not all software versions support all supervisor engines. If you are having trouble with a supervisor
engine, refer to the software release notes to be sure that it is supported by your software.
Standby Supervisor Engine Problems
If the standby supervisor engine module is not online or status indicates “other” or “faulty” in the output
of the show module command or an amber status LED, create a console connection to the standby
supervisor engine and verify that it is in ROMmon mode or in continuous reboot. If the standby
supervisor engine is in either of these two states, refer to:
http://www.cisco.com/en/US/products/hw/switches/ps663/products_configuration_example09186a008
0094ecf.shtml
switch# show module
Mod Ports Card Type Model Serial No.
----+-----+--------------------------------------+-----------------+-----------
1 2 1000BaseX (GBIC) Supervisor(active) WS-X4515 JAB0627065V
2 Standby Supervisor
3 48 10/100/1000BaseTX (RJ45) WS-X4448-GB-RJ45 JAB053606AG
4 48 10/100BaseTX (RJ45)V WS-X4148-RJ45V JAE060800BL
M MAC addresses Hw Fw Sw Status
--+--------------------------------+---+------------+----------------+---------
1 0009.e845.6300 to 0009.e845.6301 0.4 12.1(12r)EW( 12.1(12c)EW, EAR Ok
2 Unknown Unknown Unknown Other
3 0001.6443.dd20 to 0001.6443.dd4f 0.0 Ok
4 0008.2138.d900 to 0008.2138.d92f 1.6 Ok
Make sure that the supervisor engine module properly seats in the backplane connector and that you have
completely screwed down the captive screws for the supervisor engine.
In order to determine whether the standby supervisor engine is faulty, enter the redundancy reload peer
command from the active supervisor engine and through the console to the standby supervisor engine.
Observe the bootup sequence in order to identify any hardware failures. Currently, the active supervisor
engine cannot access the power-on diagnostics results of the standby supervisor engine.
Make sure that these configurations are synchronized between the active and redundant supervisor
engines:
• Startup configuration
• Boot variable