MSDP allows the separate AS's to exchange SA information between their RPs.
According to the RFC for it, in Inter-AS deployments you are required to run the Multicast address family of MBGP in order to exchange next-hop reachability information of the multicast sources. HTH, Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al. CCSI/JNCI-M/JNCI-ER VP - Technical Training - IPexpert, Inc. IPexpert Sr. Technical Instructor A Cisco Learning Partner - We Accept Learning Credits! [EMAIL PROTECTED] Telephone: +1.810.326.1444 Fax: +1.810.454.0130 http://www.ipexpert.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Allan Castillo Aguilar Sent: Friday, October 26, 2007 5:58 PM To: [email protected] Subject: [OSL | CCIE_SP] Inter-AS Multicast Hi group! I´m trying to implement Inter-as multicast, my questions: 1. Can I use msdp to implement Inter-AS Multicast?, If so, I only have just 1 RP on each AS (Service Provider Network), should I peer those two RP with MSDP? Inter-AS multicast works fine just with MSDP?? 2. Is it mandatory to activate the neighbors under router bgp address family IPV4 multicast in order to multicast to work properly??? Thanks a lot! Alan
