Qtech QSW-2910-09T-POE-AC/DC [68/212] Display multicast that can be learnt by gmrp

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garp permit multicast [ mac-address mac vlan vlan-id ]

Example:

Add multicast group 01:00:5e:00:01:01 vlan 1 to GMRP

QTECH(config)#garp permit multicast mac-address 01:00:5e:00:01:01

vlan 1

5.2.6 Display multicast that can be learnt by GMRP

Display multicast group can be statically learnt by GMRP.

show garp permit multicast

For example: Display multicast group that can be statically learnt by GMRP

QTECH(config)#show garp permit multicast

5.3 IGMP Snooping Configuration

5.3.1 Brief introduction of IGMP Snooping

IGMP (Internet Group Manangement Protocol) is a part of IP protocol which is used to support

and manage the IP multicast between host and multicast router. IP multicast allows

transferring IP data to a host collection formed by multicast group. The relationship of multicast

group member is dynamic and host can dynamically add or exit this group to reduce network

load to the minimum to realize the effective data transmission in network.

IGMP Snooping is used to monitor monitor IGMP packet between host and routers. It can

dynamically create, maintain and delete multicast address table according to the adding and

leaving of the group members. At that time, multicast frame can transfer packet according to

his own multicast address table.

5.3.2 IGMP Snooping configuration

Use following command to control IGMP Snooping to establish the MAC address multicast

transmission table in layer 2.

Use following command in global configuration mode:

 Enable IGMP Snooping

igmp-snooping

 Disable IGMP Snooping

no igmp-snooping

By default,IGMP Snooping disables.

 Display IGMP Snooping