Posts Tagged ‘RP placement’

Basic Multicast part 3 – PIM Sparse Mode – Auto-RP

August 9, 2012 3 comments

Continuing with Multicast topic I will this time talk about PIM SM and Auto-RP. This post is the next part of the previous post called: “Basic Multicast part 2 – PIM Sparse Mode – Static RP” where I talked about how to configure PIM in Sparse Mode but I also explained and demonstrate the source registration process with the RP as well as SPT switchover.

 The topology I am going to use in this post will be the same as the one I used in the previous multicast post.

 Let´s consider the following topology:

Source: The multicast source will be sending to multicast group which is part of the administratively scoped addresses assigned by IANA which is for use in private multicast domains, much like the IP unicast range defined in RFC 1918.

 RP: The RP is R4 with IP:

MA: the mapping agent is R3 with IP

IGP: The IGP used is EIGRP

Platform/IOS: Cisco 2691/12.4(15)T11 Adv IP services

 We saw in the previous multicast post on PIM SM with static RP that all multicast enabled router need to know the IP address of the RP in order to build the shared tree and signal the RP of the presence of eventual multicast receivers for a specific multicast group.

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