Configuring Ipv6 Pim-Ssm; Ipv6 Pim-Ssm Configuration Task List - HPE FlexNetwork 5510 HI Series Configuration Manual

Disabling BSM semantic fragmentation
BSM semantic fragmentation enables a BSR to split a BSM into multiple BSM fragments (BSMFs) if
the BSM exceeds the MTU. In this way, a non-BSR router can update the RP-set information for a
group range after receiving all BSMFs for the group range. The loss of one BSMF only affects the
RP-set information of the group ranges that the fragment contains.
If the IPv6 BIDIR-PIM domain contains a device that does not support this feature, you must disable
BSM semantic fragmentation on all C-BSRs. If you do not disable this feature, such a device regards
a BSMF as an entire BSM and updates the RP-set information each time it receives a BSMF. It
learns only part of the RP-set information, which further affects the RP election.
To disable BSM semantic fragmentation:
Step
Enter system view.
1.
Enter IPv6 PIM view.
2.
Disable BSM semantic
3.
fragmentation.
NOTE:
Generally, a BSR performs BSM semantic fragmentation according to the MTU of its BSR interface.
For BSMs originated due to learning of a new IPv6 PIM neighbor, semantic fragmentation is
performed according to the MTU of the interface that sends the BSMs.
Disabling the device from forwarding BSMs out of their incoming interfaces
By default, the device forwards BSMs out of their incoming interfaces to avoid the situation that some
devices cannot receive the BSMs because of inconsistent routing information. This results in
duplicated traffic. If the devices have consistent routing information, you can disable the device from
forwarding BSMs out of their incoming interfaces to reduce the traffic.
To disable the device from forwarding BSMs out of their incoming interfaces:
Step
Enter system view.
1.
Enter IPv6 PIM view.
2.
Disable the device from
3.
forwarding BSMs out of their
incoming interfaces.

Configuring IPv6 PIM-SSM

IPv6 PIM-SSM requires MLDv2 support. Enable MLDv2 on IPv6 PIM routers that connect to
multicast receivers.

IPv6 PIM-SSM configuration task list

Tasks at a glance
(Required.) Enabling IPv6 PIM-SM
Command
system-view
ipv6 pim [ vpn-instance
vpn-instance-name ]
undo bsm-fragment enable
Command
system-view
ipv6 pim [ vpn-instance
vpn-instance-name ]
undo bsm-reflection enable
299
Remarks
N/A
N/A
By default, BSM semantic
fragmentation is enabled.
Remarks
N/A
N/A
By default, the device forwards
BSMs out of their incoming
interfaces.