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The %SYS-4-SYS_LCPERR4:Module [dec]: LTL Parity error detected on Coil #[dec] error message appears in Catalyst 6500 series switch that runs CatOS system software

Core issue

This message can indicate a transient ASIC packet buffer problem. The first [dec] is the module number. The second [dec] is the ASIC number.

Resolution

In order to run a complete diagnostic test on the module numbers mentioned in the error message and check for any problems, complete these steps:

  1. Issue the set test diaglevel complete command in the global configuration mode to set the diagnostics level to complete.

  2. Issue the reset [module#] command to soft-reset the module. After the module is up again, capture the output of the show module command and the show test command to display the errors reported from the diagnostic tests.

  3. Physically pull out and reseat the module firmly in the chassis to hard-reset the module. After the module is up again, capture the output of the show module command and the show test command.

  

If the error persists, then use TAC Service Request Tool in order to open a case with Cisco Technical Support.

Refer to Common CatOS Error Messages on Catalyst 6500/6000 Series Switches for more information.

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