rpf – TEK@link

Multicast: RPF… Part 6

In our test network

R1, R2 and R3 are in the same RIP routing domain

All these routers are configured for a PIM-SM mode operation

The RP address is set to R3’s fa1/0 interface

Client1 is configured to join multicast destined for group 226.0.0.1 and sent from Server1

Instead of PIM-Dense (flood and prune) we use PIM-Sparse to build the forwarding path from the server to the client

IGMPv3 (RFC 4607) allows the receivers to specify the source they wish in additiont the multicast group trafic

By default we use the 232.0.0.0/8 range for SSM

In our lab setup

We configure Client1 to join SSM specific range @ip address 232.0.0.1 sourced from Server1 (in the same subnet)