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

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

Technical Level

Solution ID	sk113623
Technical Level
Product	ClusterXL, Cluster - 3rd party
Version	R75 (EOL), R76 (EOL), R77 (EOL), R77.10 (EOL), R77.20, R77.30 (EOL)
OS	Gaia, IPSO 6.2
Platform / Model	All
Date Created	30-Sep-2016
Last Modified	26-Jun-2018

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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