Nortel Networks 450 manual Igmp Snooping Configuration Rules

Using the BayStack 450 10/100/1000 Series Switch

IGMP Snooping Configuration Rules

The IGMP snooping feature operates according to specific configuration rules. When configuring your switch for IGMP snooping, consider the following rules that determine how the configuration reacts in any network topology:

•A port that is configured for port mirroring cannot be configured as a static router port.

•If a MultiLink Trunk member is configured as a static router port, all of the MultiLink Trunk members are configured as static router ports. Also, if a static router port is removed, and it is a MultiLink Trunk member, all MultiLink Trunk members are removed as static router port members, automatically.

•Static router ports must be port members of at least one VLAN.

•If a port is configured as a static router port, it is configured as a static router port for all VLANs on that port. The IGMP configuration is propagated through all VLANs of that port.

•If a static router port is removed, the membership for that port is removed from all VLANs of that port.

•The IGMP snooping feature is not STP dependent.

•The IGMP snooping feature is not Rate Limiting dependent.

•The snooping field must be enabled for the proxy field to have any valid meaning.

•Static router ports are configured per VLAN and per IGMP Version.

Note: Because IGMP snooping is set up per VLAN, all IGMP changes are implemented according to the VLAN configuration for the specified ports.

For more information about using the IGMP snooping feature, see “IGMP Configuration” on page 3-51.

See also Appendix D, “Quick Steps to Features” for configuration flowcharts that can help you use this feature.

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