F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

854
Ste
p
Command Remarks
1384. Configure the device to
select the RPF route based on
the longest match.
multicast ipv6 longest-match
Optional.
The route with the highest priority is
selected as the RPF route by default.
1385. Configure IPv6 multicast
load splitting.
multicast ipv6 load-splitting
{source | source-group }
Optional.
Disabled by default.
978BConfiguring 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. You can define an IPv6 multicast forwarding range by
specifying boundary interfaces, which form a closed IPv6 multicast forwarding area.
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.
To configure an IPv6 multicast forwarding range:
Ste
p
Command Remarks
1386. Enter system view.
system-view
N/A
1387. Enter interface view.
interface interface-type interface-number N/A
1388. Configure an IPv6
multicast forwarding
boundary.
multicast ipv6 boundary { ipv6-group-address
prefix-length | scope { scope-id | admin-local |
global | organization-local | site-local } }
No forwarding
boundary by default.
979BConfiguring the IPv6 multicast forwarding table size
The router maintains the corresponding forwarding entry for each IPv6 multicast packet that it receives.
Excessive IPv6 multicast routing entries, however, can exhaust the router's memory and cause lower
performance. You can set an upper limit on the number of entries in the IPv6 multicast forwarding table
based on the actual networking situation and the performance requirements. If the configured upper limit
is smaller than the number of existing entries in the IPv6 multicast forwarding table, the entries in excess
are not deleted immediately. The IPv6 multicast routing protocol that runs on the router will delete them.
The router will no longer install new IPv6 multicast forwarding entries until the number of existing IPv6
multicast forwarding entries decreases below the upper limit.
When the router forwards IPv6 multicast data, it replicates a copy of the IPv6 multicast data for each
downstream node and forwards the data. Each of these downstream nodes is a branch of the IPv6
multicast distribution tree. You can configure the maximum number of downstream nodes (namely, the
maximum number of outgoing interfaces) for a single entry in the IPv6 multicast forwarding table to
lessen the burden on the router for replicating IPv6 multicast traffic. If the configured upper limit is smaller
than the number of existing downstream nodes for a forwarding entry, the downstream nodes in excess
are not deleted immediately. The IPv6 multicast routing protocol will delete them. The router will no