Advanced Configuration Example: Igmp Relay; Prerequisites - Lenovo RackSwitch G8264 Application Manual

Advanced Configuration Example: IGMP Relay

Prerequisites

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Figure 42 shows an example topology. Switches B and C are configured with IGMP
Relay.
Figure 42. Topology
Multicast Multicast
Host 1
Host 2
VLAN 3
Switch B
5
1 2
LAG 1
VLAN 2
Multicast
Server
Devices in this topology are configured as follows:
 The IP address of Multicast Router 1 is 5.5.5.5
 The IP address of Multicast Router 2 is 5.5.5.6
 STG 2 includes VLAN2; STG 3 includes VLAN 3; STG 5 includes VLAN 5.
 The multicast server sends IP multicast traffic for the following groups:
VLAN 2, 225.10.0.11 – 225.10.0.15

 The multicast hosts send the following IGMP Reports:
Host 1: 225.10.0.11 – 225.10.0.12, VLAN 3

Host 2: 225.10.0.12 – 225.10.0.13, VLAN 2; 225.10.0.14 – 225.10.0.15, VLAN 3

Host 3: 225.10.0.13 – 225.10.0.14, VLAN 2

 The Mrouter receives all the multicast traffic.
Before you configure IGMP Relay, ensure you have performed the following
actions:
 Configured VLANs.
 Enabled IGMP.
Multicast
Host 3
VLANs 2,3 VLAN 2
Switch C
LAG 3
6
VLAN 2
5
3 3
4 4
Switch A
2
4
3
1
5
VLAN 2
Chapter 32: Internet Group Management Protocol
Multicast
Router 1
VLAN 5
Multicast
Router 2
6
7 VLAN 5
1 2
LAG 2
VLAN 2
513