126
Tasks at a glance
Remarks
•
•
(Optional.)
Configuring a PIM domain border
•
(Optional.)
Disabling BSM semantic fragmentation
•
(Optional.)
Disabling BSM forwarding out of incoming interfaces
on a network without C-RPs.
Configuring common PIM features
N/A
Configuration prerequisites
Before you configure BIDIR-PIM, configure a unicast routing protocol so that all devices in the
domain can interoperate at the network layer.
Enabling BIDIR-PIM
Because BIDIR-PIM is implemented on the basis of PIM-SM, you must enable PIM-SM before you
enable BIDIR-PIM. As a best practice, enable PIM-SM on all non-border interfaces of routers when
you deploy a BIDIR-PIM domain.
IMPORTANT:
All interfaces on a device must be enabled with the same PIM mode.
To enable BIDIR-PIM:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable IP multicast routing
and enter MRIB view.
multicast routing
[
vpn-instance
vpn-instance-name
]
By default, IP multicast routing is
disabled.
3.
Return to system view.
quit
N/A
4.
Enter interface view.
interface
interface-type
interface-number
N/A
5.
Enable PIM-SM.
pim sm
By default, PIM-SM is disabled.
6.
Return to system view.
quit
N/A
7.
Enter PIM view.
pim
[
vpn-instance
vpn-instance-name
]
N/A
8.
Enable BIDIR-PIM.
bidir-pim
enable
By default, BIDIR-PIM is disabled.
Configuring an RP
CAUTION:
When both PIM-SM and BIDIR-PIM run on the PIM network, do not use the same RP to provide
services for PIM-SM and BIDIR-PIM. Otherwise, exceptions might occur to the PIM routing table.
An RP can provide services for multiple or all multicast groups. However, only one RP can forward
multicast traffic for a multicast group at a time.