Users Guide

Internet Group Management Protocol
(IGMP)
The IGMP commands are supported on the Dell Networking OS.
Topics:
• IGMP Commands
• clear ip igmp groups
• clear ip igmp snooping groups
• debug ip igmp
• debug ip igmp snooping
• ip igmp access-group
• ip igmp immediate-leave
• ip igmp last-member-query-interval
• ip igmp query-interval
• ip igmp query-max-resp-time
• ip igmp ssm-map
• ip igmp version
• show ip igmp groups
• show ip igmp interface
• show ip igmp ssm-map
• IGMP Snooping Commands
• ip igmp snooping enable
• ip igmp snooping fast-leave
• ip igmp snooping flood
• ip igmp snooping last-member-query-interval
• ip igmp snooping mrouter
• ip igmp snooping querier
• show ip igmp snooping groups
• show ip igmp snooping mrouter
IGMP Commands
Dell Networking OS supports IGMPv1/v2/v3 and is compliant with RFC-3376.
Important Points to Remember
● Dell Networking OS supports protocol-independent multicast-sparse (PIM-SM) and protocol-independent source-specific
multicast (PIM-SSM) include and exclude modes.
● IGMPv2 is the default version of IGMP on interfaces. You can configure IGMPv3 on interfaces. It is backward compatible
with IGMPv2.
●
● There is no hard limit on the maximum number of groups supported.
● IGMPv3 router interoperability with IGMPv2 and IGMPv1 routers on the same subnet is not supported.
● An administrative command (ip igmp version) is added to manually set the IGMP version.
● All commands previously used for IGMPv2 are compatible with IGMPv3.
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Internet Group Management Protocol (IGMP) 597