Pim SSM: Cisco highly recommend the use of Data-mdt (SSM) to optimize multicast traffic and to support high multicast bandwidth applications. In Source Specific multicast , Hosts sends IGMP Source specific along with its group. The IGMP Query is send to the address (220.127.116.11).
Pim Bi-Dir: Pim Bi-directional is implemented in a Network which has sources that are also recievers for different Groups (In between). In Pim Bi-dir the source of the tree is rooted at the shared tree. Pim Designated Forwarder is elected based on the highest ip address on a segment, In Pim Bi-dir the Pim Register and Register-message is the removed to prevent added overhead.
Bi-Dir PIM is a good solution when there are multiple sources for the multicast groups in use the capability to build bidirectional trees provide more forwarding efficiency.
PIM SSM is source aware so it allows for security (do not propagate traffic from arbitrary ip addresses) and for reuse of multicast ip addresses: a different ip source is seen as a different session users with IGMP v3 request a group and can specify a source.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...