3com MSR 20-20 참조 매뉴얼

C

HAPTER

 87: M

ULTICAST

 R

OUTING

 

AND

 F

ORWARDING

 C

ONFIGURATION

 C

OMMANDS

Use the undo multicast routing-enable command to disable IP multicast 
routing.

IP multicast routing is disabled by default.

Note that:

■

You must enable IP multicast routing in the public instance or VPN instance 
before you can carry out other Layer 3 multicast commands in the 
corresponding instance.

■

The device does not forward any multicast packets before IP multicast routing 
is enabled.

# Enable IP multicast routing in the public instance.

<Sysname> system-view

[Sysname] multicast routing-enable 

# Enable IP multicast routing in VPN instance mvpn.

<Sysname> system-view

[Sysname] ip vpn-instance mvpn

[Sysname-vpn-instance-mvpn] route-distinguisher 100:1

[Sysname-vpn-instance-mvpn] multicast routing-enable 

reset multicast [ vpn-instance vpn-instance-name | all-instance ] forwarding-table 
{ { source-address [ mask { mask | mask-length } ]  |  group-address [ mask { mask | 
mask-length } ]  |  incoming-interface { interface-type interface-number | register } }  * 
| all }

User view

vpn-instance-name: VPN instance name, a case sensitive string of up to 31 
characters.

all-instance: Specifies all VPN instances.

source-address: Multicast source address.

group-address: Multicast group address, in the range of 224.0.1.0 to 
239.255.255.255.

mask: Mask of the multicast group/source address, 255.255.255.255 by default.

mask-length: 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 a 
multicast source address, this argument has an effective value range of 0 to 32. 
The system default is 32 in both cases.