CCIE: Multicast
Preface: To clear old entries in the multicast table, use “clear ip mroute *”. This command usually will allow changes to be sync:ed, but not always. In the worst case scenario, you may have to reload the device. Modifications to a working multicast environment is not recommended if you cannot interrupt traffic forwarding. Be sure to schedule maintenance window in a REAL production environment. PIM: Signaling protocol that uses the unicast routing table to preform RPF checks. Dense mode: Flood to all multicast enabled interfaces and downstream routers prune…