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VRRP dual Master state after state changes on same VRID

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TitleVRRP dual Master state after state changes on same VRID
Symptoms
After an VRRP state change a dual VRRP master situations happens
Environment
  • VRRP
  • EXOS
  • Modules/slots with multiple ASICs
Cause
This is caused by a bug (CR xos0067506) where some programming of the internal ACL rules needed for VRRP operation are not installed correctly on all ASICs.
Resolution
A workaround is to disable VRRP and enable it again, this will re-install the ACL rules on all modules.
Another workaround is causing another single state change that would also trigger this.

A fix will be available in:
  • 15.3.5 patch that will be released in June 2017
  • 16.2.3 patch that will be released in June 2017
  • 21.1.3.7-patch1-5 or higher
Additional notes

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