3com MSR 20-20 참조 매뉴얼

# Configure route selection based on the longest match 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 

multicast minimum-ttl ttl-value

Interface view

ttl-value: Minimum TTL required for a multicast packet to be forwarded on the 
interface, in the range of 1 to 255.

Use the multicast minimum-ttl command to configure the minimum TTL 
required for a multicast packet to be forwarded on the interface.

Use the undo multicast minimum-ttl command to restore the system default.

By default, the minimum TTL value required for a multicast packet to be forwarded 
is 1.

display multicast minimum-ttl.

# Set the minimum TTL required for a multicast packet to be forwarded on 
Ethernet 1/0 to 8.

<Sysname> system-view

[Sysname] interface ethernet 1/0

[Sysname-Ethernet1/0] multicast minimum-ttl 8 

System view, VPN instance view

None

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