Displaying And Maintaining Ipv6 Multicast Routing And Forwarding - HP A8800 Configuration Manual

Delivering packets to the CPU
In the following two cases, an IPv6 multicast packet that failed the RPF check must be delivered to the
CPU:
• If an IPv6 multicast packet arrives on an outgoing interface of the corresponding IPv6 multicast
forwarding entry, the packet fails the RPF check and needs to be delivered to the CPU to trigger the
assert mechanism to prune the unwanted branch.
If the SPT and RPT have different incoming interfaces on the receiver-side DR (the designated router),
•
the IPv6 multicast traffic will fail the RPF check on the SPT incoming interface during an RPT-to-SPT
switchover before the RPF information is refreshed. If the RPT is pruned at this moment, the multicast
service will be instantaneously interrupted. By passing IPv6 packets that failed the RPF check on a
non-outgoing interface to the CPU, the router can determine whether the packets that have failed
the RPF check on the SPT interface are expected. If they are, the router initiates an RPT prune.
For more information about the assert mechanism and RPT-to-SPT switchover, see
PIM."
To enable delivering packets that failed the RPF check to the CPU:
Step
1. Enter system view.
2. Enable delivering packets that
have failed an RPF check to
the CPU.
Displaying and maintaining IPv6 multicast routing
and forwarding
CAUTION:
The reset commands might cause IPv6 multicast transmission failures.
To display and maintain IPv6 multicast routing and forwarding:
Task
Display the IPv6 multicast
boundary information.
Command
system-view
multicast ipv6 rpf-fail-pkt
trap-to-cpu
Command
display multicast ipv6 boundary { group
[ ipv6-group-address [ prefix-length ] ] | scope
[ scope-id ] } [ interface interface-type
interface-number ] [ | { begin | exclude |
include } regular-expression ]
339
"Configuring IPv6
Remarks
N/A
Disabled by default.
Remarks
Available in any
view.