Cisco SFE1000P Administration Guide - Page 77

Configuring Multicast Forwarding

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Chapter SFE1000P Gigabit Ethernet Switch Administration Guide 10 Configuring Multicast Forwarding The Multicast section contains the following pages: • IGMP Snooping • Defining Multicast Bridging Groups • Defining Multicast Forwarding IGMP Snooping 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. 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. To enable IGMP Snooping: 1. Click Bridging > Multicast > IGMP Snooping. The IGMP Snooping Page opens: IGMP Snooping Page 2. Define the relevant fields. 3. Click Apply. The IGMP Global Parameters are updated, and the device is updated. Chapter 10: Configuring Multicast Forwarding 69 IGMP Snooping

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69
Chapter 10: Configuring Multicast Forwarding
IGMP Snooping
SFE1000P Gigabit Ethernet Switch Administration Guide
Chapter
10
Configuring Multicast Forwarding
The Multicast section contains the following pages:
•
IGMP Snooping
•
Defining Multicast Bridging Groups
•
Defining Multicast Forwarding
IGMP Snooping
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.
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.
To enable IGMP Snooping:
1.
Click
Bridging
>
Multicast
>
IGMP Snooping
. The
IGMP Snooping Page
opens:
IGMP Snooping Page
2.
Define the relevant fields.
3.
Click
Apply
. The IGMP Global Parameters are updated, and the device is updated.