Configuring Anycast Rp; Reducing Source-Active Message Flooding; Specifying The Rp Address Used In Sa Messages - Dell Z9000 Configuration Manual

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Configuring Anycast RP

To configure anycast RP, use the following commands.

In each routing domain that has multiple RPs serving a group, create a Loopback interface on each

RP serving the group with the same IP address.

CONFIGURATION mode

interface loopback

Make this address the RP for the group.

CONFIGURATION mode

ip pim rp-address

In each routing domain that has multiple RPs serving a group, create another Loopback interface on

each RP serving the group with a unique IP address.

CONFIGURATION mode

interface loopback

Peer each RP with every other RP using MSDP, specifying the unique Loopback address as the

connect-source.

CONFIGURATION mode

ip msdp peer

Advertise the network of each of the unique Loopback addresses throughout the network.

ROUTER OSPF mode

RPs flood source-active messages to all of their peers away from the RP.

When multiple RPs exist within a domain, the RPs forward received active source information back to the

originating RP, which violates the RFP rule. You can prevent this unnecessary flooding by creating a

mesh-group. A mesh in this context is a topology in which each RP in a set of RPs has a peership with all

other RPs in the set. When an RP is a member of the mesh group, it forwards active source information

only to its peers outside of the group.

To create a mesh group, use the following command.

Create a mesh group.

CONFIGURATION mode

ip msdp mesh-group

The default originator-id is the address of the RP that created the message. In the case of Anycast RP,

there are multiple RPs all with the same address.

To use the (unique) address of another interface as the originator-id, use the following command.

Use the address of another interface as the originator-id instead of the RP address.

Multicast Source Discovery Protocol (MSDP)