In a Tx-Plus routing matrix, packets traverse both electrical and optical media as they travel between the Switch Interface Boards (SIBs) in the T1600 routing nodes (called ST-SIB-Ls) and the SIBs in the TX Matrix Plus platform (called F13SIBs and F2S-SIBs). The chassis process (chassisd) on the routing node that houses the indicated F13SIB detected an error in the electrical path between the indicated ports on the F13SIB and the indicated ST-SIB-L on the indicated LCC.
When a CHASSISD_FM_ERROR_F13_FB_HSR_TXP event occurs, a message similar to the following is reported:
chassisd: CHASSISD_FM_ERROR_F13_FB_HSR_TXP: CRC errors on LCC0_FPC5_0 link via ST_SIB_L1_FBB to F13SIB3
The cause is due to either the SIB or LCC hardware being in a state that is disrupting communication between the hardware devices involved.
Examine the following output to help determine the cause of this message:
show log messages
show log chassisd
show chassis hardware models
show chassis fabric topology
show chassis fabric plane
show chassis fabric plane-location
show chassis fabric plane extensive
show chassis fabric fpcs lcc 0
show chassis fabric fpcs lcc 1
show pfe statistics traffic
show pfe statistics error
show chassis fabric fpcs
show chassis fabric sibs
show chassis sibs
Look for any related events that occurred at or just before the CHASSISD_FM_ERROR_F13_FB_HSR_TXP message in the syslog and chassisd outputs.
Perform these steps:
- During a maintenance window, as it will impact transit traffic, try offline/online cycling the referenced fabric plane hardware. (Usually a SIB.)