H3C Technologies H3C SecPath F1000-E - Manual (Page 158)

5
To do... Use the command... Remarks
Configure IPv6 multicast load
splitting multicast ipv6 load-splitting
{source | source-group } Optional
Disabled by default
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.
You can configure the forwarding boundary for a specific IPv6 multicast group or an IPv6 multicast group
with the scope field in its group address being specified 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 or scope. 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.
You can configure the minimum hop limit required for an IPv6 multicast packet to be forwarded on all
interfaces that support IPv6 multicast forwarding. Before being forwarded from an interface, every IPv6
multicast packet (including every IPv6 multicast packet sent from the local device) is subject to a hop limit
check:
• If the hop limit value of the packet (already decremented by 1 on this router) is greater than the
minimum hop limit value configured on the interface, the packet will be forwarded.
• If the hop limit value of the packet is less than the minimum hop limit value configured on the
interface, the packet will be discarded.
Follow these steps to configure an IPv6 multicast forwarding range:
To do... Use the command... Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Configure an IPv6 multicast
forwarding boundary
multicast ipv6 boundary
{ ipv6-group-address prefix-length
| scope { scope-id |
admin-local | global |
organization-local |
site-local } }
Required
No forwarding boundary by
default
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