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Multicast PIM RP config

I need to create  a IP PIM RP for a  specific multicast group to run on my local network. I want my edge router
(a c3750 Layer3 switch actually)  to be the RP for this group to serve a  small group of downstream c3750 Layer 3 switches.
Multicast is already configured on the network and works just fine in sparse mode using an RP
situated on an external network and is for all multicast groups
How do I need to configure the edge router for it to perform as the RP for a specific Mcast group, e.g. 226.0.0.0/8? Thanks

1 REPLY

On all multicast enabled

On all multicast enabled routers:

conf t

!

ip pim rp-address x.x.x.x 1

!

ip access-list standard 1

permit 226.0.0.0 0.255.255.255

Where x.x.x.x is the RP address for the group.

hth.

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