Configuring Pim-Ssm - HP FlexNetwork 7500 Series Configuration Manual

Step
Enter interface view.
2.
Configure a PIM domain
3.
border.
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 BIDIR-SM domain contains a device that does not support this feature, you must disable this
feature on all C-BSRs. If you do not disable this feature, such a device regards a BSMF as a 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 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 PIM neighbor, semantic fragmentation is performed
according to the MTU of the interface that sends the BSMs.

Configuring PIM-SSM

PIM-SSM requires IGMPv3 support. Enable IGMPv3 on PIM routers that connect to multicast
receivers.
PIM-SSM configuration task list
Tasks at a glance
(Required.)
(Optional.)
(Optional.)
Configuration prerequisites
Before you configure PIM-SSM, configure a unicast routing protocol so that all devices in the domain
can interoperate at the network layer.
Enabling PIM-SM
Configuring the SSM group range
Configuring common PIM features
Command
interface interface-type
interface-number
pim bsr-boundary
Command
system-view
pim [ vpn-instance
vpn-instance-name ]
undo bsm-fragment enable
120
Remarks
N/A
By default, an interface is not a
PIM domain border.
Remarks
N/A
N/A
By default, BSM semantic
fragmentation is enabled.