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Cisco Bug: CSCvv92048 - 3-Node Keepalived Duplicate VIP Condition

Last Modified

Oct 22, 2020

Products (1)

  • Cisco DNA Center

Known Affected Releases

DNAC1.3.3.6 JIRADNAC1.3.3.7

Description (partial)

A duplicate virtual IP address (VIP) condition may be observed on a newly installed 3-node Cisco DNA Center cluster when one network interface cannot reach (via ICMP) at least one identical interface on any other node in the cluster. Joining nodes to a cluster and enabling high availability while a duplicate VIP condition exists should not be possible.  If this does occur, symptoms such as external authentication randomly working, or Assurance information being inaccurate, will be observed, especially if static routes exist on these duplicated VIP interfaces.  For example, if non-cluster port enp9s0 interfaces cannot communicate, due to separate VLANs or some misconfiguration, a duplicate VIP condition can be seen.

This was observed in Cisco DNA Center and
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