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Cisco Bug: CSCum04250 - SDR does not come up in 511 B2B taiko

Last Modified

Jan 17, 2017

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

5.1.1.FWDG

Description (partial) 

Symptom:
On upgrading a CRS-3 B2B node to 511 release, the DRPs in that node will not boot because of invalid FBP (fabric back pressure) config

DRP/0/8/CPU1:Dec 12 12:44:07.835 : fabricq_mgr[214]: %FABRIC-FABRICQ_MGR-3-ERR_FBP_CFG : Fabricq received an invalid FBP config. Group[1] in {0 2 255} belong to the wrong cluster 2.
DRP/0/8/CPU0:Dec 12 12:44:24.672 : fabricq_mgr[214]: %FABRIC-FABRICQ_MGR-3-ERR_FBP_CFG : Fabricq received an invalid FBP config. Group[1] in {1 3 255} belong to the wrong cluster 3.

fabricq_mgr will re-span multiple times and after crossing the threshold, DRP reboots.

Conditions:
upgrading a CRS-3 B2B node to 511 release
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