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show igmp snooping data-forwarding



Display multicast source VLAN (MVLAN) and data-forwarding receiver VLAN associations and related information when you configure multicast VLAN registration (MVR) in a routing instance.


vlan vlan-name

(Optional) Display configured MVR information about a particular VLAN only.

Required Privilege Level


Output Fields

Table 1 lists the output fields for the show igmp snooping data-forwarding command. Output fields are listed in the approximate order in which they appear.

Table 1: show igmp snooping data-forwarding Output Fields

Field Name

Field Description


Routing instance in which MVR is configured.


VLAN names of the multicast source and receiver VLANs configured in the routing instance.

Learning Domain

Learning domain for snooping and MVR data forwarding.


MVR VLAN type configured for the listed VLAN, either MVR Receiver Vlan or MVR Source Vlan.

Group subnet

Group subnet address for the multicast source VLAN in the MVR configuration (the MVLAN).

Receiver vlans

Multicast receiver VLANs associated with the MVLAN. When you configure a source MVLAN, you associate one or more MVR receiver VLANs with it.


MVR operating mode configured for the listed receiver VLAN:

  • PROXY—MVR receiver VLAN is in proxy mode.

  • TRANSPARENT—MVR receiver VLAN is in transparent mode.

See mode (Multicast VLAN Registration).

Egress translate

VLAN tag translation setting for an MVR receiver VLAN:

  • TRUE—The translate option at the [edit protocols igmp-snooping vlans vlan-name data-forwarding receiver] hierarchy level is configured for the MVR receiver VLAN. With this option enabled, the device translates MVLAN tags into the MVR receiver VLAN tag when forwarding multicast traffic on the MVLAN.

  • FALSE—The translate option for VLAN tag translation is not configured for the MVR receiver VLAN. MVLAN traffic is forwarded with the MVLAN tag for receivers on trunk ports or untagged for hosts on access ports.

Install route

If TRUE, the device installs forwarding entries for the MVR receiver VLAN as well as for the MVLAN. If FALSE, only MVLAN forwarding entries are stored.

Source vlans

One or more source MVLANs associated with the listed MVR receiver VLAN.

Sample Output

show igmp snooping data-forwarding

show igmp snooping data-forwarding (vlan)

Release Information

Command introduced in Junos OS Release 18.3R1.

Support added in Junos OS Release 18.4R1 on EX2300 and EX3400 switches.

Support added in Junos OS Release 19.4R1 on EX4300 multigigabit switches.