show igmp

show igmp {vlan} {vlanname}


This command can be used to display an IGMP (Internet Group Management Protocol)-related configuration and group information, per VLAN (Virtual LAN).

Syntax Description

vlanname Specifies a VLAN name.



Usage Guidelines

The output of this command shows:
  • The VLAN name.
  • The router interface IP address and subnet mask.
  • If the interface is active (up), by the letter U.
  • If IP forwarding is enabled for the interface, by the letter f.
  • If multicast forwarding is enabled, by the letter M.
  • If IGMP is enabled, by the letter i.
  • If IGMP snooping is enabled, by the letter z.


The following command displays the IGMP configuration:

# show igmp
VLAN                 IP Address           Flags     nLRMA  nLeMA IGMPver
Default            / 0   ---izpt-      0      0       3
isc             /24   ---izpt-      0      0       3
v1                 / 0   U--izpt-      0      2       3
v3000              /24   ---izpt-      0      0       3
v666               /16   ---izpt-      0      0       3
Flags: (f) Forwarding Enabled, i) IGMP Enabled
(m) Multicast Forwarding Enabled, (p) IGMP Proxy Query Enabled
(r) Receive Router Alert Required (t) Transmit Router Alert
(U) Interface Up, (z) IGMP Snooping Enabled
(nLeMA) Number of Learned Multicast Addresses
(nLRMA) Number of Locally Registered Multicast Addresses

The following command displays the IGMP configuration for VLAN vlan1:

# show igmp vlan1
Query Interval    :    125 sec
Max Response Time :     10 sec
Last Member Query :      1 sec
Robustness        :      2
Interface on VLAN vlan1 is enabled and up.
Locally registered multicast addresses:
Learned multicast addresses(Last Querier=
s = static igmp member
IP Fwding  NO       IPmc Fwding  NO            IGMP YES
IGMP Ver  V3          Snooping YES     Proxy Query YES
XmitRtrAlrt YES     RcvRtrAlrtReq  NO


This command was first available in ExtremeXOS 10.1.

Platform Availability

This command is available on platforms that support the appropriate license. For complete information about software licensing, including how to obtain and upgrade your license and which licenses support the IPv4 multicast feature, see the ExtremeXOS 22.2 Feature License Requirements document.