Quick one, when the bootstrap router sends it's messages out it floods using the all PIM Router IP of 224.0.0.13, with a TTL of 1. Now normally I'd sit here and say routers would not send this packet on due to the TTL setting, but then it suddenly dawned on me how the hell does the BSR message get around the multicast domain !?
20 mins later, I re-read my notes and found a statement saying that all routers that recieve this message flood it out of pim enabled interfaces. my question - is it a copy, or the original mcast packet !? It's a copy right !? so it's not actually routing/forwarding the original packet, but duplicating (copying) it. If this is the case this is underlying fundamentals to the protocol which explains why it's "better" than auto-rp, i.e. no requirement for autorp-listener or sparse-dense mode and obviously vendor neutral. Thanks B _______________________________________________ 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
