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Cisco Bug: CSCuj10837 - PUNT_FABRIC_DATA_PATH diag test fails due to fabric link retrain (TX)

Last Modified

Aug 26, 2019

Products (6)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9922 Router
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router

Known Affected Releases

4.2.3.BASE

Description (partial)

PUNT_FABRIC_DATA_PATH_FAILED error is reported by the RSP for all NPs on a line card:

RP/0/RSP0/CPU0:Sep  3 13:49:36.595 UTC:
pfm_node_rp[358]:%PLATFORM-DIAGS-3-PUNT_FABRIC_DATA_PATH_FAILED : Set|online_diag_rsp[241782]|System
Punt/Fabric/data Path Test(0x2000004)|failure threshold is 3, (slot, NP) failed: (0/7/CPU0,1)
(0/7/CPU0, 2) (0/7/CPU0, 3) (0/7/CPU0, 4) (0/7/CPU0, 5) (0/7/CPU0, 6) (0/7/CPU0, 7)

Symptom:
PUNT_FABRIC_DATA_PATH_FAILED error is reported by the RSP for all NPs on a line card:

RP/0/RSP0/CPU0:Sep  3 13:49:36.595 UTC:
pfm_node_rp[358]:%PLATFORM-DIAGS-3-PUNT_FABRIC_DATA_PATH_FAILED : Set|online_diag_rsp[241782]|System
Punt/Fabric/data Path Test(0x2000004)|failure threshold is 3, (slot, NP) failed: (0/7/CPU0,1)
(0/7/CPU0, 2) (0/7/CPU0, 3) (0/7/CPU0, 4) (0/7/CPU0, 5) (0/7/CPU0, 6) (0/7/CPU0, 7)

Conditions:
Observed on ASR9000 routers a few minutes after re-trainig of fabric links. To check whether re-training has happened, run the following command:

show controller fabric ltrace crossbar location 0/rsp1/cpu0 | include rcvd link_retrain
Sep  3 13:47:06.975 crossbar 0/RSP1/CPU0 t1     detail xbar_fmlc_handle_link_retrain: rcvd
link_retrain for (5,1,0),(9,1,0),1.

Alternative possible output:

show controller fabric ltrace crossbar location 0/rsp0/cpu0 | include rcvd link_retrain
Sep  3 13:47:07.027 crossbar 0/7/CPU0 t1 detail xbar_fmlc_handle_link_retrain: rcvd
link_retrain for (9,1,0),(5,1,0),1.

Related Community Discussions

<key>CSCuj10837</key> - PUNT_FABRIC_DATA_PATH diag test failure due to fabric link retrain
Hi all, anyone knows the ETA for the SMU for this issue? Thanks, Regards, Nuno Marques.
Latest activity: Jan 02, 2014
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