Version 6.8 153 Mediant MSBR
Configuration Guide 22. IP Multicast – IGMP Proxy
22 IP Multicast – IGMP Proxy
The Internet Group Management Protocol (IGMP) is a communications protocol used by
hosts and adjacent routers on IPv4 networks to establish multicast group memberships.
IGMP is an integral part of IP multicast. The group refers to the multicast address
(224.0.0.0/4).
The IGMP proxy feature allows the MSBR to forward clients’ IGMP messages for multicast
services from the LAN towards the multicast source via the WAN interface. When the
MSBR receives multicast traffic on the WAN interface, it forwards the traffic towards any
LAN interface that has previously sent an IGMP join message to the MSBR.
When a client in the LAN wishes to leave the multicast group, it sends an IGMP Leave
message to the MSBR on the LAN interface. If this is the last client to leave the group from
the LAN interface, then the MSBR will not forward the multicast traffic to the interface. If
this the last client to leave the group from all the LAN interfaces of the MSBR, the MSBR
sends an IGMP Leave message to the multicast source.
22.1 Feature Key
Advanced routing feature key must be enabled.
22.2 CLI Configuration and Status Commands
22.2.1 Configuration Commands
Command Description
To Next Page
Loading...
Need help?
General
