Defining Permanent IP Multicast Forwarding Entries

An mroute is a multicast traffic flow (a (Source, Group) entry used for forwarding multicast traffic). By default, forwarding mroutes (with a valid RPF incoming interface) are timed out if data for them is not received for 210 seconds. However, you can specify an mroute as permanent by using the ip multicast-routing permanent-mroute command.

host1(config)#ip multicast-routing permanent-mroute routes1

You can use the no version to prevent any new mroutes from becoming permanent. To remove existing permanent mroutes, use the clear ip mroute command.

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