Configuration Guidelines; Configure Igmp Relay - IBM RackSwitch G8000 Application Manual

Configuration Guidelines

Configure IGMP Relay

© Copyright IBM Corp. 2011
• Consider the following guidelines when you configure IGMP Relay:IGMP Relay
is supported in stand-alone (non-stacking) mode only.
• IGMP Relay and IGMP Snooping are mutually exclusive—if you enable IGMP
Relay, you must turn off IGMP Snooping.
• Add the upstream Mrouter VLAN to the IGMP Relay list, using the following
command:
RS G8000(config)# ip igmp relay vlan
• If IGMP hosts reside on different VLANs, you must:
– Disable IGMP flooding.
RS G8000(config)# vlan <vlan id>
RS G8000(config-vlan)# no flood
– Enable CPU forwarding to ensure that multicast data is forwarded across the
VLANs.
RS G8000(config)# vlan <vlan id>
RS G8000(config-vlan)# cpu
Use the following procedure to configure IGMP Relay.
1. Configure IP interfaces with IPv4 addresses, and assign VLANs.
RS G8000(config)# interface ip 2
RS G8000(config-ip-if)# ip address 10.10.1.1
RS G8000(config-ip-if)# ip netmask 255.255.255.0
RS G8000(config-ip-if)# vlan 2
RS G8000(config-ip-if)# enable
RS G8000(config-ip-if)# exit
RS G8000(config)# interface ip 3
RS G8000(config-ip-if)# ip address 10.10.2.1
RS G8000(config-ip-if)# ip netmask 255.255.255.0
RS G8000(config-ip-if)# vlan 3
RS G8000(config-ip-if)# enable
RS G8000(config-ip-if)# exit
2. Turn IGMP on.
RS G8000(config)# ip igmp enable
3. Enable IGMP Relay and add VLANs to the downstream network.
RS G8000(config)# ip igmp relay enable
RS G8000(config)# ip igmp relay vlan 2
RS G8000(config)# ip igmp relay vlan 3
<VLAN number>
Chapter 19. Internet Group Management Protocol
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