Go CCIE Go!! - A Cisco Certified Internetwork Expert

For your last question about pinging a multicast group. When you ping a multicast group, The router originates a ping request for all pim enabled loopbacks and the physical pim enabled interface. To check this scenario do a "debug ip mpacket" on a router then run the ping command, This will show you all the mcast ping packets, Beaware that if you are testing things like ttl thresholds etc then the results can be confusing at first, As the pings originated from the loopback will have their ttl value as 1 lower than the packet originated from the physical interface. ...

Hello Marc, To upgrade from restricted to unrestricted license you would need to contact your sales rep. ...

Hi,experts: So,is the following conclusion right? In a multicast domain,all routers configured with "ip pim sparse-mode",without RP,C-RP,RP-agent and "ip pim autorp lisntener" command. ...