Today I played with laboratory 7 Volume 3, the task about bgp multicast said ensure each router can ping joined group On many forums , also this, I have hear that when bgp multicast is used for rpf illegal the net bgp must not advertised through bgp multicast, never. Absolutely I am not agree in this topology the unicast network follows path totally different. incomplete pim path I am almost sure net must be announced via bgp multicast networks. eg. or when you modify source MSDP In fact r1 i have wrong path then to r6 no route exist Am i missing something? R1#pi 239.0.0.6 Type escape sequence to abort. Sending 1, 100-byte ICMP Echos to 239.0.0.6, timeout is 2 seconds: . R1#sh ip rp 67.67.67.6 RPF information for ? (67.67.67.6) RPF interface: FastEthernet0/0.12 RPF neighbor: ? (12.1.2.2) RPF route/mask: 67.67.67.6/32 RPF type: unicast (bgp 12) RPF recursion count: 1 Doing distance-preferred lookups across tables
R1#conf t Enter configuration commands, one per line. End with CNTL/Z. R1(config)#do pi 239.0.0.7 re 1 so l0 Type escape sequence to abort. Sending 1, 100-byte ICMP Echos to 239.0.0.1, timeout is 2 seconds: Packet sent with a source address of 12.12.12.1 Reply to request 0 R2#sh ip rp 67.67.67.6 RPF information for ? (67.67.67.6) RPF interface: Serial0/1/0.24 RPF neighbor: ? (12.45.24.4) RPF route/mask: 67.67.67.6/32 RPF type: unicast (bgp 12) RPF recursion count: 1 R2#sh ip rp 67.67.67.6 RPF information for ? (67.67.67.6) RPF interface: Serial0/1/0.24 RPF neighbor: ? (12.45.24.4) RPF route/mask: 67.67.67.6/32 RPF type: mbgp RPF recursion count: 0 Doing distance-preferred lookups across tables R4#sh ip rp 67.67.67.6 RPF information for ? (67.67.67.6) failed, no route exists R4#sh ip rp 67.67.67.6 Aug 19 13:28:21.229: %SYS-5-CONFIG_I: Configured from console by console R4#sh ip rp 67.67.67.6 RPF information for ? (67.67.67.6) RPF interface: FastEthernet0/1.45 RPF neighbor: ? (45.4.5.5) RPF route/mask: 67.67.67.6/32 RPF type: mbgp RPF recursion count: 0 Doing distance-preferred lookups across tables -- This message is intended for the individual(s) to whom it is addressed and may contain information that is privileged or confidential. If you are not the addressee you must not read,use or disclose the contents of this email. Whilst all reasonable care has been taken to avoid the transmission of viruses, the recipient should carry out virus and other checks, as they consider appropriate. Myself accepts no responsibility in this regard. _______________________________________________ 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
