A company deploys a Cisco SD-WAN solution but has an unstable Internet connection. When the link to vSmart comes back up, the WAN Edge router routing table is not refreshed, and some traffic to the…

The 'omp graceful-restart timers holdtime 120' command sets the OMP graceful restart hold timer to 120 seconds (2 minutes). This timer determines how long a WAN Edge router will maintain its OMP routes when it loses connectivity to the vSmart controller, ensuring that once the connection is re-established within this period, routes are quickly refreshed without being flushed entirely.

The 'advertisement-interval' timer controls how often OMP updates are sent, not how long routes are held during a graceful restart scenario.

Disabling graceful restart ('no graceful-restart') would cause routes to be flushed immediately upon vSmart adjacency loss, exacerbating the problem of dropped traffic during unstable connections, not solving it.

The 'eor-timer' (End-of-Rib timer) is related to the time a router waits to receive all routes from a peer after establishing an adjacency, not for holding routes during an outage.