3com 2948-SFP Plus 用户指南

C

HAPTER10: 

C

ONFIGURING 

IGMP S

NOOPING &

 Q

UERy

This section contains information for configuring IGMP Snooping & 
Query.

When IGMP Snooping is enabled globally, all IGMP packets are          
forwarded to the CPU. The CPU analyzes the incoming packets and 
determines:

 

  Which ports want to join which Multicast groups.

  

  Which ports have Multicast routers generating IGMP queries.

■  

  Which routing protocols are forwarding packets and Multicast  

 

 

traffic. 

When IGMP Snooping is enabled and IGMP Query globally,  the device 
issues IGMP query.

Ports requesting to join a specific Multicast group issue an IGMP report, 
specifying that Multicast group is accepting members. This results in the 
creation of the Multicast filtering database.

This section contains the following topic:

    Defining IGMP Snooping & Query

The IGMP Snooping & Query Setup Page allows network managers to 
define GMP Snooping & Query parameters.

1   Click Device > IGMP Snooping & Query > Setup. The IGMP  

Snooping & Query Setup Page opens.