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undo require-router-alert
View Public instance IGMP view, VPN instance IGMP view
Parameter None
Description Use the
require-router-alert command to configure globally the router to
discard IGMP messages that do not carry the Router-Alert option.
Use the
undo require-router-alert command to restore the system default.
By default, the device does not check the Router-Alert option, namely it handles all
the IGMP messages it received to the upper layer protocol for processing.
Related command: igmp require-router-alert, send-router-alert (IGMP view).
Example # Globally configure the router to discard IGMP messages that do not carry the
Router-Alert option in the public instance.
<Sysname> system-view
[Sysname] igmp
[Sysname-igmp] require-router-alert
reset igmp group
Syntax reset igmp [ vpn-instance vpn-instance-name | all-instance ] group { all | interface
interface-type interface-number { all | group-address [ mask { mask | mask-length }]
[ source-address [ mask { mask | mask-length }]]}}
View User view
Parameter vpn-instance-name: VPN instance name, a case sensitive string of up to 31
characters.
all-instance: Specifies all VPN instances.
all: Specifies to clear all IGMP forwarding entries.
interface interface-type interface-number: Clears the IGMP forwarding entries on
the specified interface.
group-address: Multicast group address, in the range of 224.0.1.0 to
239.255.255.255.
source-address: Multicast source address.
mask: Subnet mask of the multicast group/source address, 255.255.255.255 by
default.
mask-length: Subnet mask length of the multicast group/source address. For a
multicast group address, this argument has an effective value range of 4 to 32; for