Configuring IGMP VLAN Snooping

IGMP Layer 2 snooping allows the Extreme Networks switch for a specific VLAN to actively participate in IGMP traffic forwarding. IGMP snooping depends on the presence of an upstream IGMP querier. Whenever it receives an IGMP query, the switch forwards the query out the appropriate VLAN ports. IGMP snooping allows per-port traffic patterns in VLANs with multiple ports. It is disabled by default.

For more information, refer to the S-, K-, and 7100 Series CLI Reference Guide.

The following procedure describes how to configure IGMP snooping for a VLAN.

IGMP Snooping for a VLAN Configuration

Step	Task	Command(s)
1	Enable IGMP snooping for a VLAN or a range of VLANs.	set igmp enable vlan-id
2	Enable querying on this VLAN, and specify the IGMP querier source address.	set igmp query-enable vlan-id address ip-address
3	Set the version of IGMP to use. Enter 1 for IGMPv1, 2 for IGMPv2, or 3 for IGMPv3.	set igmp config vlan-id igmp-version 1|2|3
4	Set the Last Member interval value, which can be 1–255.	set igmp config vlan-id last-member-interval value
5	Set the Max Response Time which can be 1–255 seconds.	set igmp config vlan-id max-response-time seconds
6	Set the Query Interval, which can be 1–65535 seconds.	set igmp config vlan-id query-interval seconds
7	Set the Robustness value, which can be 2–255.	set igmp config vlan-id robustness value
8	Optionally, create a static IGMP entry, or add ports to an existing entry. The entry can be in the form of an IP multicast address or IP group address.	set igmp add-static {IP-multicast-address | IP-group-address vlan-id} [modify] port-string