Preview Tool

Cisco Bug: CSCvu38194 - ICSR Standby instance come back as Active after reload in new version

Last Modified

Sep 17, 2020

Products (2)

  • Cisco ASR 5000 Series
  • Cisco ASR 5500

Known Affected Releases 21.15.40 21.16.4 21.16.c13 21.16.c3 21.16.c3.73730 21.16.c4.73805 21.17.8 21.18.1 21.19.3 21.19.M0.75315 21.19.M0.75366 21.19.n2 21.20.0

Description (partial)

ICSR Standby instance come back as Active after reload.

The issue here is that new-active(NodeY) is sending a SRP-hello packet with monitor-fail flag set to 512:-
Hello Version   : 1
Hello Interval  : 1
Priority        : 200
Dead Interval   : 3
Peer Address    :
Current State   : 1 (Active)
 Current Mode    : 2 (Backup)
 Tie Breaker     : 00-50-56-9A-35-30
Monitor Flags   : 512 <<<<<<< SX-Monitor failed
RtMod           : 9
Hence, the old-active(NodeX) takes the role of Active. This is due to a issue in the initialization of monitor-flags in SRP module
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.