ATL Telecom R1-SW Ethernet Switch User Manual

Page 239

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Configuring IGMP Snooping

11-5

(config)# end

# show ip igmp snoop mrouter

---------- ----- ---------------

port vlan router ip

---------- ----- ---------------

internal N/A 0.0.0.0

1/1 1 0.0.0.0

---------- ----- ---------------

Total Number : 2

---------- ----- ---------------

#


To remove a multicast router port, use the no ip igmp snoop mrouter command in Global
configuration mode

.

(config)# no ip igmp snoop mrouter port gigabitethernet 1/1

(config)#

Note: Multicast routers that support only IGMPv1 cannot process host membership report messages received
from devices that support IGMPv2. In addition, multicast routers which support only IGMPv1 cannot understand
Leave messages, which are sent by hosts leaving multicast groups. Since there is no way for IGMP snooping
devices, such as the Corecess R1-SW24L2B, to automatically recognize ports connected to these IGMPv1
multicast routers, the user must manually specify them.

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