Users Guide

Table Of Contents
Stacking 251
JOIN messages upstream. The control plane updates the driver with
checkpointed unicast routes. The forwarding plane reconciles Layer-3
hardware tables.
The OSPF graceful restart finishes, and the control plane deletes any stale
unicast routes not relearned at this point. The forwarding plane reconciles
Layer-3 multicast hardware tables. Throughout the process, the hosts
continue to receive their multicast streams, possibly with a short interruption
as the top aggregation router learns that one of its LAG members is down.
The hosts see no more than a 50 ms interruption in unicast connectivity.