Inter-peering Diameter connection between the two redundant SR nodes is required to transport Diameter messages directly between them if the SR node with an active SRRP instance does not have a direct Diameter path to the agent or server. Instead, the messages must be sent over the inter-peering connection to the other SR node which is directly connected to the Diameter agent or server.
The synchronization mechanism between the two redundant nodes ensures that only one SR node initiates this inter-peer connection. The other (peering) SR node accepts this request but does not initiate it.
The watchdog timer for this peering connection should be set to the lowest configurable value.