SNR S2989G-48TX-POE — настройка IGMP Snooping и Multicast на коммутаторах [263/553]

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S2989G-24TX Operation Manual

Chapter 5 Multicast Protocol Related Configuration

4-38

Group 1

Group 2

Switch A

IGMP Snooping

L2 general querier

Multicast port

Switch B

IGMP Snooping

Multicast

Server

includes ports 1, 2, 6, 10 and 12. Four hosts are connected to port 2, 6, 10 and 12

respectively and the multicast router is connected to port 1. As IGMP Snooping is disabled

by default either in the switch or in the VLANs, If IGMP Snooping should be enabled in

VLAN 100, the IGMP Snooping should be first enabled for the switch in Global Mode and

in VLAN 100 and set port 1 of VLAN 100 to be the mrouter port.

The configuration steps are listed below:

Switch(config)#ip igmp snooping

Switch(config)#ip igmp snooping vlan 100

Switch(config)#ip igmp snooping vlan 100 mrouter interface ethernet 1/0/1

Multicast Configuration

Suppose two programs are provided in the Multicast Server using multicast address

Group1 and Group2, three of four hosts running multicast applications are connected to

port 2, 6, 10 plays program1, while the host is connected to port 12 plays program 2.

IGMP Snooping listening result:

The multicast table built by IGMP Snooping in VLAN 100 indicates ports 1, 2, 6, 10 in

Group1 and ports 1, 12 in Group2.

All the four hosts can receive the program of their choice: ports 2, 6, 10 will not receive the

traffic of program 2 and port 12 will not receive the traffic of program 1.

Scenario 2: L2-general-querier

Group 1 Group 1 Group 1 Group 2

Figure 5-3 The switches as IGMP Queries

The configuration of Switch2 is the same as the switch in scenario 1, SwitchA takes the