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Follow these steps to configure an IPv6 multicast routing policy:
To do...
Enter system view
Configure the device to select
the RPF route based on the
longest match
Configure IPv6 multicast load
splitting
Configuring an IPv6 Multicast Forwarding Range
IPv6 multicast packets do not travel infinitely in a network. The IPv6 multicast data of each IPv6
multicast group must be transmitted within a definite scope. Presently, you can define an IPv6 multicast
forwarding range by:
Specifying boundary interfaces, which form a closed IPv6 multicast forwarding area, or
Setting the minimum hop limit value required for an IPv6 multicast packet to be forwarded.
Setting the minimum hop limit value is not supported on 3Com Switch 4800G.
You can configure the forwarding boundary for a specific IPv6 multicast group on all interfaces that
support IPv6 multicast forwarding. A multicast forwarding boundary sets the boundary condition for the
IPv6 multicast groups in the specified range. If the destination address of an IPv6 multicast packet
matches the set boundary condition, the packet will not be forwarded. Once an IPv6 multicast boundary
is configured on an interface, this interface can no longer forward IPv6 multicast packets (including
those sent from the local device) or receive IPv6 multicast packets.
Follow these steps to configure an IPv6 multicast forwarding range:
To do...
Enter system view
Enter interface view
Configure an IPv6 multicast
forwarding boundary
Configuring the IPv6 Multicast Forwarding Table Size
The router maintains the corresponding forwarding entry for each IPv6 multicast packet it receives.
Excessive IPv6 multicast routing entries, however, can exhaust the router's memory and thus result in
lower router performance. You can set a limit on the number of entries in the IPv6 multicast forwarding
Use the command...
system-view
multicast ipv6 longest-match
multicast ipv6 load-splitting
{source | source-group }
Use the command...
system-view
interface interface-type
interface-number
multicast ipv6 boundary
ipv6-group-address
prefix-length
1-5
Remarks
—
Optional
The route with the highest
priority is selected as the RPF
route by default
Optional
Disabled by default
Remarks
—
—
Required
No forwarding boundary by
default
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