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IGMP snooping configuration
OS10(config)# ip igmp snooping enable
OS10(config)# interface vlan 100
OS10(conf-if-vl-100)# ip igmp snooping mrouter interface ethernet 1/1/32
OS10(conf-if-vl-100)# ip igmp snooping querier
OS10(conf-if-vl-100)# ip igmp version 3
OS10(conf-if-vl-100)# ip igmp snooping fast-leave
OS10(conf-if-vl-100)# ip igmp snooping query-interval 60
OS10(conf-if-vl-100)# ip igmp snooping query-max-resp-time 10
OS10(conf-if-vl-100)# ip igmp snooping last-member-query-interval 1000
View IGMP snooping information
OS10# show ip igmp snooping groups
Total Number of Groups: 480
IGMP Connected Group Membership
Group Address Interface Mode Expires
225.1.0.0 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
225.1.0.1 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
225.1.0.2 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
225.1.0.3 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
225.1.0.4 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
225.1.0.5 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
225.1.0.6 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
225.1.0.7 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
225.1.0.8 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
225.1.0.9 vlan3531 IGMPv2-Compat 00:01:35
Member-ports :port-channel41,ethernet1/1/51,ethernet1/1/52
--more--
<<Output Truncated>>
OS10# show ip igmp snooping interface vlan 2
Vlan2 is up, line protocol is up
IGMP version is 3
IGMP snooping is enabled on interface
IGMP snooping query interval is 60 seconds
IGMP snooping querier timeout is 130 seconds
IGMP snooping last member query response interval is 1000 ms
IGMP Snooping max response time is 10 seconds
IGMP snooping fast-leave is disabled on this interface
IGMP snooping querier is disabled on this interface
Multicast flood-restrict is enabled on this interface
show ip igmp snooping mrouter
Interface Router Ports
Vlan 100 ethernet 1/1/32
Unknown multicast flood control
The unknown multicast flood control feature enables the system to forward unknown multicast packets only to a multicast
router (mrouter).
When you enable multicast snooping, OS10 forwards multicast frames, whose destination is already learned, to their intended
recipients. When the system receives multicast frames whose destination is not known, it floods the frames for all ports on
the specific VLAN. All hosts that receive these multicast frames must process them. With multicast flood control, the system
forwards unknown multicast frames only to the interface that leads to the mrouter. The mrouter can then forward the traffic to
the intended destinations.
1090
Multicast