Configuring A Bsr - HP MSR2003 Configuration Manual

determine the RPs for different multicast group ranges based on the RP-set information. HP recommends
that you configure C-RPs on backbone routers.
To enable the BSR to distribute the RP-set information in the BIDIR-PIM domain, the C-RPs must periodically
send advertisement messages to the BSR. The BSR learns the C-RP information, encapsulates the C-RP
information and its own IP address in a BSM, and floods the BSM to all PIM routers in the domain.
An advertisement message contains a holdtime option, which defines the C-RP lifetime for the advertising
C-RP. After the BSR receives an advertisement message from a C-RP, it starts a timer for the C-RP. If the BSR
does not receive any advertisement message when the timer expires, it considers the C-RP failed or
unreachable.
To configure a C-RP:
Step
1. Enter system view.
2. Enter PIM view.
3. Configure a C-RP to provide
services for BIDIR-PIM.
Configuring the maximum number of BIDIR-PIM RPs
In a BIDIR-PIM domain, one DF election per RP is implemented on all PIM-enabled interfaces. To avoid
unnecessary DF elections, HP recommends not configuring multiple RPs for BIDIR-PIM.
This configuration sets a limit on the number of BIDIR-PIM RPs. If the number of RPs exceeds the limit,
excess RPs do not take effect and can be used only for DF election rather than multicast data forwarding.
The system does not delete the excess RPs. They must be deleted manually.
To configure the maximum number of BIDIR-PIM RPs:
Step
1. Enter system view.
2. Enter PIM view.
3. Configure
number of BIDIR-PIM RPs.

Configuring a BSR

You must configure a BSR if C-RPs are configured to dynamically select the RP. In a network with a static
RP, this configuration task is unnecessary.
A BIDIR-PIM domain can have only one BSR, but must have at least one C-BSR. Any router can be
configured as a C-BSR. Elected from C-BSRs, the BSR is responsible for collecting and advertising RP
information in the BIDIR-PIM domain.
Configuring a C-BSR
IMPORTANT:
Because the BSR and other devices exchange a large amount of information in the BIDIR-PIM domain,
reserve a large bandwidth between the C-BSR and other devices.
Command
system-view
pim [ vpn-instance vpn-instance-name ]
c-rp ip-address [ advertisement-interval
adv-interval | group-policy acl-number |
holdtime hold-time | priority priority ] * bidir
Command
system-view
pim [ vpn-instance vpn-instance-name ]
the maximum
bidir-rp-limit limit
105
Remarks
N/A
N/A
By default, no C-RP is
configured.
Remarks
N/A
N/A
The default setting is 6.