Cisco APIC Layer 3 Networking Configuration Guide, Release 6.2(x)

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Cisco APIC Layer 3 Networking Configuration Guide, Release 6.2(x)

Configure an IGMP snooping policy using the GUI

Updated: April 17, 2026

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Configure an IGMP snooping policy whose IGMP settings can be assigned to one or multiple bridge domains.

Create an IGMP snooping policy to apply consistent IGMP settings across multiple bridge domains within a tenant.

Create an IGMP Snooping policy whose IGMP settings can be assigned to one or multiple bridge domains.

Procedure

  1. Click the Tenants tab and the name of the tenant on whose bridge domain you intend to configure IGMP snooping support.

  2. In the Navigation pane, click Policies > Protocol > IGMP Snoop.

  3. Right-click IGMP Snoop and select Create IGMP Snoop Policy.

  4. In the Create IGMP Snoop Policy dialog, configure a policy as follows:

    1. In the Name and Description fields, enter a policy name and optional description.
    2. In the Admin State field, select Enabled or Disabled to enable or disable IGMP snooping for this particular policy.
    3. Select or unselect Fast Leave to enable or disable IGMP V2 immediate dropping of queries through this policy.
    4. Select Enable querier to enable or disable the IGMP querier activity through this policy.
      Note

      For this option to be effectively enabled, the Subnet Control: Querier IP setting must also be enabled in the subnets assigned to the bridge domains to which this policy is applied. The navigation path to the properties page on which this setting is located is Tenants > tenant_name > Networking > Bridge Domains > bridge_domain_name > Subnets > subnet_name.

    5. In the Querier Version field, select Version 2 or Version 3 to to choose IGMP snooping querier version for this particular policy.
    6. Specify in seconds the Last Member Query Interval value for this policy.

      IGMP uses this value when it receives an IGMPv2 Leave report. This means that at least one host wants to leave the group. After it receives the Leave report, it checks that the interface is not configured for IGMP Fast Leave and if not, it sends out an out-of-sequence query.

    7. Specify in seconds the Query Interval value for this policy.

      This value is used to define the amount of time the IGMP function will store a particular IGMP state if it does not hear any reports on the group.

    8. Specify in seconds Query Response Interval value for this policy.

      When a host receives the query packet, it starts counting to a random value, less that the maximum response time. When this timer expires, host replies with a report.

    9. Specify the Start query Count value for this policy.

      Number of queries sent at startup that are separated by the startup query interval. Values range from 1 to 10. The default is 2.

    10. Specify in seconds a Start Query Interval for this policy.

      By default, this interval is shorter than the query interval so that the software can establish the group state as quickly as possible. Values range from 1 to 18,000 seconds. The default is 31 seconds.

  5. Click Submit.

The new IGMP Snoop policy is listed in the Protocol Policies - IGMP Snoop summary page.

What to do next

To put this policy into effect, assign it to any bridge domain.