Latest News about Cisco Technology
May 9, 2025
Multicast Source Discovery Protocol (MSDP) In the PIM sparse mode model, the router that’s closest to the sources or receivers registers with the RP. The RP knows about all the sources and receivers for any particular group. Network administrators may want to configure several RPs and create several PIM-SM domains. In each domain, RPs have
READ MOREMulticast Control Protocols The NX-OS software supports the following protocols to implement IP multicast routing: Internet Group Management Protocol (IGMP) IGMP is used to dynamically register individual hosts in a multicast group on a particular LAN. Hosts identify group memberships by sending IGMP messages to their local multicast router. Under IGMP, routers listen to IGMP
READ MOREMulticast Forwarding In unicast routing, traffic is routed through the network along a single path from the source to the destination host. A unicast router does not consider the source address; it considers only the destination address and how to forward the traffic toward that destination. The router scans through its routing table for the
READ MOREMulticast Distribution Trees A multicast distribution tree represents the path that multicast data takes between the routers that connect sources and receivers. The multicast software builds different types of trees to support different multicast methods. Source Trees A source tree represents the shortest path that the multicast traffic takes through the network from the sources
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