Ip igmp source-address-check – Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) User Manual
Page 767
IGMP Snooping Commands
Software Reference for x310 Series Switches
C613-50046-01 REV A
AlliedWare Plus
TM
Operating System - Version 5.4.4C
31.29
ip igmp source-address-check
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.
To ensure your VLAN is configured first, see
Examples
To deny IGMP Reports from outside the current subnet for the VLAN interface vlan2, use
the following commands:
To allow IGMP Reports from outside the current subnet for the VLAN interface vlan2, use
the following commands:
Validation
Commands
show ip igmp interface
show running-config
awplus#
configure terminal
awplus(config)#
interface vlan2
awplus(config-if)#
ip igmp source-address-check
awplus#
configure terminal
awplus(config)#
interface vlan2
awplus(config-if)#
no ip igmp source-address-check