Configuring IGMP Snooping

Owned by Tracy Yang
Nov 28, 2023
2 min read

Procedure

Step1         Enable the global IGMP snooping function.

   set protocols igmp-snooping enable <true | false>

Step2         Enable the VLAN-based IGMP snooping function.

   set protocols igmp-snooping vlan-id <vlan-id> enable <true | false>

NOTE:

To enable IGMP snooping, both global and VLAN-based IGMP snooping need to be configured. 

  • If only the global IGMP snooping is enabled, IGMP snooping in the VLAN is disabled by default. To enable IGMP snooping in a VLAN, you also need to enable the VLAN-based IGMP snooping function via set protocols igmp-snooping vlan-id enable command.
  • After both global and VLAN-based IGMP snooping are enabled, it will take effect only on interfaces that have already been added to this VLAN enabled IGMP snooping.

Step3         Configure the number of times that the querier sends a group-specific query message.

   set protocols igmp-snooping last-member-query-count <last-member-query-count>

Step4         Configure the interval that the querier sends a group-specific query message.

   set protocols igmp-snooping last-member-query-interval <last-member-query-interval>

Step5         Configure the maximum response time for IGMP general query message.

   set protocols igmp-snooping max-response-time <max-response-time>

Step6         Configure the interval of sending IGMP general queries.

   set protocols igmp-snooping query-interval <query-interval>

Step7         Enable the membership report suppression function.

   set protocols igmp-snooping report-suppression <true | false>

Step8         Configure the IGMP robustness coefficient.

   set protocols igmp-snooping robustness-variable <robustness-variable>

Step9         Configure the aging time of dynamic router port.

   set protocols igmp-snooping router-aging-time <router-aging-time>

Step10      Enable the fast leave function to allow member ports in a VLAN to quickly leave the multicast group.

   set protocols igmp-snooping vlan-id <vlan-id> fast-leave <true | false>

Step11      Configure the querier in a VLAN.

   a)      Enable the querier function in a VLAN.

   set protocols igmp-snooping vlan-id <vlan-id> querier enable <true | false>

   b)     Configure the IGMP snooping querier IP address.

   set protocols igmp-snooping vlan-id <vlan-id> querier address <querier-address>

   c)      Configure the IGMP snooping querier version.

   set protocols igmp-snooping vlan-id <vlan-id> querier version <querier-version>

   d)     Configure the IGMP snooping querier other-querier-timer.

   set protocols igmp-snooping vlan-id <vlan-id> querier other-querier-timer <other-querier-timer>

Step12      Configure the interface as a static router port in the specified VLAN.

  set protocols igmp-snooping vlan-id <vlan-id> mrouter interface <interface-name>

Step13      Configure a static member interface to the multicast group.

  set protocols igmp-snooping vlan-id <vlan-id> static group <group-address> interface <interface-name>

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