HP VSR1000 Configuration Manual page 104

affected. For more information about static multicast routes, see
and forwarding."
To configure a C-BSR:
Step
Enter system view.
1.
Enter PIM view.
2.
Configure a C-BSR.
3.
(Optional.) Configure a BSR
4.
policy.
Configuring a PIM domain border
A PIM domain border determines the transmission boundary of bootstrap messages. Bootstrap
messages cannot cross the domain border in either direction. A number of PIM domain border
interfaces partition a network into different PIM-SM domains.
To configure a PIM domain border:
Step
Enter system view.
1.
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 range. The loss of one BSMF only affects the RP-set
information of the group ranges that the fragment contains.
If the PIM-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.
Command
system-view
pim [ vpn-instance
vpn-instance-name ]
c-bsr ip-address [ scope
group-address { mask-length |
mask } ] [ hash-length
hash-length | priority priority ] *
bsr-policy ipv4-acl-number
Command
system-view
interface interface-type
interface-number
pim bsr-boundary
Command
system-view
pim [ vpn-instance
vpn-instance-name ]
undo bsm-fragment enable
96
"Configuring multicast routing
Remarks
N/A
N/A
By default, no C-BSRs exist.
By default, no BSR policies exist,
and all bootstrap messages are
regarded legal.
Remarks
N/A
N/A
By default, an interface is not a
PIM domain border.
Remarks
N/A
N/A
By default, BSM semantic
fragmentation is enabled.