Monitoring IGMP and IGMP Proxy

IP hosts use Internet Group Management Protocol (IGMP) in IPv4 to report their multicast group memberships to neighboring routers. Similarly, multicast routers, such as an E Series router, use IGMP to discover which of their hosts belong to multicast groups.

Note: The output for monitor and show commands from E120 and E320 routers is identical to the output from other E Series routers, except that the output from E120 and E320 routers includes information about the adapter identifier in the interface specifier (slot/adapter/port).

The following topics describe how to monitor IGMP for IP multicast and IGMP proxy on an E Series router:

• Monitoring IGMP Information on a Virtual Router
• Monitoring IGMP Groups
• Monitoring IGMP Interfaces
• Monitoring Summary Information for IGMP Interfaces
• Monitoring IGMP on a Mapped Outgoing Interface
• Monitoring IGMP for Multicast Groups
• Monitoring IGMP on Outgoing Interfaces
• Monitoring IGMP Information for a Mapped Outgoing Interface
• Monitoring IGMP SSM Mapping
• Monitoring the Number of IGMP Groups on a Port
• Monitoring IGMP Proxy Parameters
• Monitoring IGMP Proxy Groups
• Monitoring IGMP Proxy Interfaces