3com S7906E Guide De Référence

 

1-16 

Use the multicast longest-match command to configure the device to select the RPF route based on 

the longest match principle, namely to select the route with the longest mask as the RPF route.  

Use the undo multicast longest-match command to restore the default.  

By default, the device selects the route with the highest priority as the RPF route.  

# Configure the device to select the RPF route based on the longest match principle in the public 

instance.  

<Sysname> system-view 

[Sysname] multicast longest-match 

# Configure route selection based on the longest match in VPN instance mvpn. 

<Sysname> system-view 

[Sysname] ip vpn-instance mvpn 

[Sysname-vpn-instance-mvpn] multicast longest-match 

undo multicast routing-enable 

System view, VPN instance view 

2: System level 

None 

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

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

IP multicast routing is disabled by default.  

Note that:  

z 

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.  

z 

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