Configuration Guide Configuring IGMP Snooping
Ruijie# show ip igmp snooping gda-table
Multicast Switching Cache Table
D: DYNAMIC //Dynamic member port
S: STATIC //Static member port
M: MROUTE //Multicast router port (dynamic or static)
(*, 233.3.6.29, 1): //(S: any; G: 233.3.6.29; VLAN_ID: VLAN 1)
VLAN(1) 3 OPORTS:
GigabitEthernet 0/3(S)
GigabitEthernet 0/2(M)
GigabitEthernet 0/1(D)
caPWAP-Tunnel 0/1(D) // CAPWAPchannel port
(*, 233.3.6.30, 1): //S: any; G: 233.3.6.30; VLAN_ID: VLAN 1)
VLAN(1) 2 OPORTS:
GigabitEthernet 0/2(M)
GigabitEthernet 0/1(D)
(*,239.1.1.1, 1): //( S: any; G: 239.1.1.1,VLAN 1)
VLAN(1) 1 OPORTS:
dot11radio 1/0.1 (D) // wireless port
Overview
Listening to IGMP Packets
Discovers and identifies the router port and member port to establish and maintain the IGMP
snooping forwarding entries. :
IGMP Snooping Working
Modes
Provides independent or shared multicast services to the user VLAN.
On a network without a Layer-3 multicast device, the Layer-2 multicast device acts as an
IGMP querier.
Configuring
Multicast-to-Unicast
Conversion
Implements transmission of multicast packets between the AP and STAs in unicast mode.
Optimizing Multicast
Wireless Environment
Configuration
Ignores port timer resetting for query packets.
10.3.1 Listening to IGMP Packets
A device running IGMP snooping analyzes IGMP packets received, and finds and identifies the router port and member port
using these packets, thereby creating and maintaining an IGMP snooping entry.
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