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Loss of PIM state during failover and failback in ClusterXL HA / VRRP cluster
Symptoms

  • Loss of PIM state might occur in cluster in the following scenario:

    1. ClusterXL High Availability on Gaia OS, or VRRP cluster on Gaia OS / IPSO OS
    2. Failover occurs from the current Active / VRRP Master member to the Standby / VRRP Backup member
    3. PIM Join Messages are received and PIM multicast works as expected through the cluster
    4. Failback occurs to the original Active / VRRP Master member
    5. PIM Join Messages are not received and PIM multicast stops working
Cause

PIM information is not synchronized when PIM interface comes up.


Solution
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