If it is eBGP you are fine. If it is iBGP the rpf will still prefer the unicast routing table. My suggestion is that you play with both while running "sh ip rpf"
------Original Message------ From: Robert Simmons Sender: [email protected] To: CCIE OSL Subject: [OSL | CCIE_RS] Lab 5 Volume 3 Sent: Apr 13, 2010 3:56 PM IPExperts, I was working on Troubleshooting Ticket No. 4 (Multicast in AS25) and I was able to make it work but, when I looked at the DSG I noticed that you guys added the "distance bgp 20 20 20" command to the multicast address family. The solution guide says this was done because RPF lookup is still dependent on AD but, I thought the way RPF worked was that it looked at the multicast BGP database first and then the unicast table. Since you are modifying the route's next-hop via MBGP route-map (pointing it to the sparse enabled interface) my thoughts are you wouldn't need to lower the MBGP AD. Am I missing something here? Thanks -Rob _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Sent from my Verizon Wireless BlackBerry Regards, Joe Astorino - CCIE #24347 Sr. Technical Instructor - IPexpert Mailto: [email protected] Telephone: +1.810.326.1444 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
