I'm going to try to help out here a bit. BGP and MSDP are not directly related to one another. You can have MSDP without having BGP but it is typical to have BGP and Multicast as that is a larger environment.
MSDP simply allows one RP to exchange multicast information with another RP, i.e. source A can register with RP A then another source B can register with RP B. If RP A and RP B have MSDP between them then both with know about source A and source B. Now if you want a client to be able to get to both source A and source B they must have a route that passes an RFP check. This is where BGP or OSPF or EIGRP would come in typically. Hope this helps. AndyL -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ryan Jensen Sent: Tuesday, January 7, 2014 1:47 PM To: [email protected] Subject: [OSL | CCIE_RS] Multicast question I all, this is probably an amateur question, but I'm having an issue wrapping my head around how BGP for multicast relates to MSDP. Here's how I Think they relate: BGP for multicast shares routes to RPs for the purpose of RPF MSDP shares 'routes' to multicast sources. The sources that are shared via MSDP need to be reachable via the routes learned from BGP yes? Is this a correct understanding? _______________________________________________ Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: iPexpert on YouTube: www.youtube.com/ipexpertinc _______________________________________________ Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: iPexpert on YouTube: www.youtube.com/ipexpertinc
