This article discusses the following syslog message and how to address it:

CRC errors are found on xfchip. The message reports errors on the high-speed link between a FPC card and the associated SCB board. 

It can be either software or hardware causing the CRC errors.

1. Collect the following output:

   request pfe execute target fpc1 command "show hsl2 statistics" <-- Take this output multiple times with at least a 5-10 sec time difference to observe any CRC errors increment.
   request pfe execute target fpc1 command "show nvram"
   request pfe execute target fpc1 command "show syslog messages"

2. Identify which planes are reporting errors:

   show chassis fabric summary
   show chassis fabric fpcs
   show chassis fabric plane
   show chassis fabric plane-location
   show chassis fabric map
   show chassis fabric reachability
   show chassis fabric destinations
   show chassis environment cb 
   show chassis environment fpc

3. During a maintenance window, perform the following:

   1. Reset the fabric plane by taking it offline and bringing it back online 
     > request chassis fabric plane offline 3
  > request chassis fabric plane online 3
   2. Reset/Reseat the FPC
   3. Reseat the CB
   4. Replace or swap FPC/CB with other cards in the chassis, or with spares.

• Resolution Guide - MX - Troubleshoot Fabric Planes in Fault or Check State
• MX DPC/MPC Troubleshooting Subroutine (called from Resolution Guide - Troubleshoot Fabric Plane)
• Config Router - New CRC errors found on xfchip