3com S7906E Guide De Référence

 

1-23 

Public instance IGMP view, VPN instance IGMP view  

2: System level 

None 

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.  

# 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 [ 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 } ] ] } } 

User view 

2: System level 

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.