Most ISP's don't like sharing their RP information, so they build MSDP neighbor, and exchange as Scott said a SA information, and they filter RP on their ASBR, on a native environment (old school) you had to enable unicast multicast on the neighbor, but most SP are going to AFI/SAFI style and you will need configure multicast just Scott mentioned.
Thanks, Liban Mohamed NTAC-IP Sprint/Nextel www.sprint.net [EMAIL PROTECTED] (W) 678-291-3438 (PCS) 404-441-9701 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Saturday, October 27, 2007 12:00 PM To: [email protected] Subject: CCIE_SP Digest, Vol 9, Issue 3 Send CCIE_SP mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit http://onlinestudylist.com/mailman/listinfo/ccie_sp or, via email, send a message with subject or body 'help' to [EMAIL PROTECTED] You can reach the person managing the list at [EMAIL PROTECTED] When replying, please edit your Subject line so it is more specific than "Re: Contents of CCIE_SP digest..." Today's Topics: 1. Inter-AS Multicast (Allan Castillo Aguilar) 2. Re: Inter-AS Multicast (Scott Morris) ---------------------------------------------------------------------- Message: 1 Date: Fri, 26 Oct 2007 15:58:03 -0600 From: "Allan Castillo Aguilar" <[EMAIL PROTECTED]> Subject: [OSL | CCIE_SP] Inter-AS Multicast To: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain;charset="iso-8859-1";format="flowed" 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 ------------------------------ Message: 2 Date: Fri, 26 Oct 2007 18:22:32 -0400 From: "Scott Morris" <[EMAIL PROTECTED]> Subject: Re: [OSL | CCIE_SP] Inter-AS Multicast To: "'Allan Castillo Aguilar'" <[EMAIL PROTECTED]>, <[email protected]> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="iso-8859-1" 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 End of CCIE_SP Digest, Vol 9, Issue 3 *************************************
