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Cisco Bug: CSCta65195 - ping to VIP may fail when HSRP interfaces have uRPF enabled

Last Modified

Feb 22, 2018

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

4.2(1) 6.2(10)E3

Description (partial)

Symptom:
Ping to First Hop Redundancy Protocols (FHRP)  Virtual IP from an external device fails in some scenarios.

Conditions:
This issue happens when Strict Unicast RPF is enabled on FHRP interfaces, and the ping response has to take the path via standby/listen or backup router.  

To confirm if this problem is hit, issue the ping to virtual IP from the same source with unicast RPF disabled on FHRP enabled interfaces, and check if the ping succeeds.
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