[CAUSE] The notification tMcPeerIPsecTnlGrpMasterStateChg is generated whenever mastership election state of a tunnel-group changes. [EFFECT] This notification is informational. The effects associated with this notification depend upon the new state of the tunnel-group. For example, when a tunnel-group becomes master it will begin attracting traffic towards its chassis and will begin to manage IKE sessions for all IPsec tunnels in that tunnel-group. [RECOVERY] No recovery actions are required, although unexpected state transitions often indicate causal fault conditions which may require investigation.
Sources for this description
Netdisco MIB archive copiesNokia networking MIB copies (LibreNMS/Observium Community)