3Com 3CBLSG48 User Guide - Page 143

CONFIGURING IGMP SNOOPING & QUERY, Introduction, Defining IGMP, Snooping & Query

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132 CHAPTER10: CONFIGURING IGMP snooping & Query 10 Introduction CONFIGURING IGMP SNOOPING & QUERY 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 Defining IGMP Snooping & Query The IGMP Snooping & Query Setup Page allows network managers to define GMP Snooping & Query parameters. The monitor users have read-only access to this page. 1 Click Device > IGMP Snooping & Query > Setup. The IGMP Snooping & Query Setup Page opens.

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C
HAPTER10:
C
ONFIGURING
IGMP S
NOOPING &
Q
UERY
132
10
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
Introduction
The
IGMP Snooping & Query Setup Page
allows network managers to
define GMP Snooping & Query parameters.
The monitor users have read-only access to this page.
1
Click
Device > IGMP Snooping & Query > Setup
. The
IGMP
Snooping & Query Setup Page
opens.
Defining IGMP
Snooping & Query