3com S7906E Guía De Referencia
1-23
View
Public instance IGMP view, VPN instance IGMP view
Default Level
2: System level
Parameters
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 commands: igmp require-router-alert, send-router-alert.
Examples
# 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 [ all-instance | vpn-instance vpn-instance-name ] group { all | interface interface-type
interface-number { all | group-address [ mask { mask | mask-length } ] [ source-address [ mask { mask
| mask-length } ] ] } }
View
User view
Default Level
2: System level
Parameters
all-instance: Specifies all instances.
vpn-instance vpn-instance-name: Specifies a VPN instance. A VPN instance name is a case sensitive
string of up to 31 characters and must not contain any space
all: The first all specifies to clear IGMP multicast group information on all interfaces, while the second
all specifies to clear the information of all IGMP multicast groups.
interface interface-type interface-number: Clears IGMP multicast information on the specified
interface.