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    Configuring Group Outgoing Interface Mapping

    You can configure an IGMP interface to use a different outgoing interface (OIF) for multicast-data-forwarding by applying an OIF map. When you configure an OIF map on an IGMP interface, the map is applied to all IGMP membership requests that the interface receives.

    To configure OIF mapping on an interface:

    1. Create an OIF map using the ip igmp oif-map command at the global level.
      host1(config)#ip igmp oif-map OIFMAP atm 3/0.1 232.0.0.1/32 51.0.0.1/32 host1(config)#ip igmp oif-map OIFMAP atm 3/0.2 232.0.0.1/32 51.0.0.2/32 host1(config)#ip igmp oif-map OIFMAP atm 3/0.3 233.0.0.1/32 host1(config)#ip igmp oif-map OIFMAP atm 3/0.4 233.0.0.0/24 51.0.0.1/32 host1(config)#ip igmp oif-map OIFMAP atm 3/0.5 233.0.0.0/24 51.0.0.2/32 host1(config)#ip igmp oif-map OIFMAP self 0.0.0.0/0 51.0.0.0/24
    2. Apply the OIF map to an interface using the ip igmp apply-oif-map command.
      host1(config-subif)#ip igmp apply-oif-map OIFMAP

    To properly configure an interface used in the OIF map for multicast-data-forwarding capability, you must configure the interface version as passive with the ip igmp version command. You can either specify a passive interface as the OIF or specify the OIF as self (to use the IGMP interface as the OIF) in the ip igmp oif-map command.

    Published: 2014-08-19