Ping is sent from all router interfaces when you ping a multicast address.
-- Marko Milivojevic - CCIE #18427 :: This message was sent from a mobile device. I apologize for errors and brevity. :: On May 29, 2012, at 20:47, Bob McCouch <[email protected]> wrote: > Hi Everyone, > > Another multicast question: Why do I frequently get different numbers of > responses to the same ping command from different points in a multicast > network? For example, the following is taken from multiple routers in a > simple, converged multicast environment: > > R1(config)#do ping 224.1.1.1 > > Type escape sequence to abort. > Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds: > > Reply to request 0 from 10.1.45.4, 8 ms > Reply to request 0 from 10.1.45.4, 16 ms > > !---------------------- > > R3(config)#do ping 224.1.1.1 > > Type escape sequence to abort. > Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds: > > Reply to request 0 from 10.1.45.4, 12 ms > Reply to request 0 from 10.1.45.4, 16 ms > Reply to request 0 from 10.1.45.4, 16 ms > > !------------------------ > > R2(config)#do ping 224.1.1.1 > > Type escape sequence to abort. > Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds: > > Reply to request 0 from 10.1.45.4, 8 ms > Reply to request 0 from 10.1.45.4, 20 ms > Reply to request 0 from 10.1.24.4, 20 ms > Reply to request 0 from 10.1.45.4, 12 ms > > !------------------------ > > R5#ping 224.1.1.1 > > Type escape sequence to abort. > Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds: > > Reply to request 0 from 10.1.45.4, 20 ms > Reply to request 0 from 10.1.45.4, 120 ms > Reply to request 0 from 10.1.45.4, 112 ms > Reply to request 0 from 10.1.45.4, 108 ms > Reply to request 0 from 10.1.45.4, 104 ms > Reply to request 0 from 10.1.45.4, 96 ms > Reply to request 0 from 10.1.45.4, 92 ms > Reply to request 0 from 10.1.45.4, 88 ms > Reply to request 0 from 10.1.45.4, 84 ms > Reply to request 0 from 10.1.45.4, 84 ms > Reply to request 0 from 10.1.45.4, 72 ms > Reply to request 0 from 10.1.45.4, 72 ms > Reply to request 0 from 10.1.45.4, 64 ms > Reply to request 0 from 10.1.45.4, 60 ms > > > I thought perhaps there was some difference between running the command > right from exec mode as opposed to config mode, but some testing showed > inconclusive results there. > > Any insight into why this is so inconsistent? Does it suggest a multicast > routing loop? > > Thanks! > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
