What is the default OMP graceful-restart timer on vSmart controllers and WAN Edge routers?

The default OMP graceful-restart timer on vSmart controllers and WAN Edge routers is 43,200 seconds (12 hours). This timer specifies how long the OMP peer will retain routes learned from a peer that has gone down. If the peer does not re-establish the OMP session within this timeframe, the routes are flushed. This allows for network stability during temporary control plane outages. 21,600 seconds (6 hours) is too short for the default, potentially causing unnecessary route flushing. 86,400 seconds (24 hours) and 604,800 seconds (7 days) are excessively long, which could lead to stale routes persisting in the network for extended periods, impacting reachability and convergence.