766
Command Reference for AT-IX5-28GPX High Availability, High Power Video Surveillance PoE Switch
C613-50057-01 REV A
AlliedWare Plus™ Operating System - Version 5.4.5-0.x
IGMP
AND
IGMP S
NOOPING
C
OMMANDS
IP
IGMP
SOURCE
-
ADDRESS
-
CHECK
ip igmp source-address-check
Overview
This command enables the checking of the Source Address for an IGMP Report,
rejecting any IGMP Reports originating on devices outside of the local subnet.
Use the
no
variant of this command to disable the checking of the Source Address
for an IGMP Report, which allows IGMP Reports from devices outside of the local
subnet.
Syntax
ip igmp source-address-check
no ip igmp source-address-check
Default
Source address checking for IGMP Reports is enabled by default.
Mode
Interface Configuration for a VLAN interface.
Usage
This is a security feature, and should be enabled unless IGMP Reports from outside
the local subnet are expected, for example, if Multicast VLAN Registration is active
in the network.
The no variant of this command is required to disable the IGMP Report source
address checking feature in networks that use Multicast VLAN Registration to allow
IGMP Reports from devices outside of the local subnet.
Examples
To deny IGMP Reports from outside the current subnet for the VLAN interface
vlan2, use the following commands:
awplus#
configure terminal
awplus(config)#
interface vlan2
awplus(config-if)#
ip igmp source-address-check
To allow IGMP Reports from outside the current subnet for the VLAN interface
vlan2, use the following commands:
awplus#
configure terminal
awplus(config)#
interface vlan2
awplus(config-if)#
no ip igmp source-address-check
Validation
Commands
show ip igmp interface
show running-config
