Configuring A Bsr - HP MSR2003 Configuration Manual

In an IPv6 BIDIR-PIM domain, if you want a router to become the RP, you can configure the router as a
C-RP. The BSR collects the C-RP information according to the received advertisement messages from C-RPs
or the auto-RP announcements from other routers. Then, it organizes the C-RP information into the RP-set
information, which is flooded throughout the entire network. The other routers in the network can
determine the RPs for different IPv6 multicast group ranges based on the RP-set information.
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 IPv6 address in a BSM, and floods the BSM to all IPv6 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 IPv6 PIM view.
3. Configure a C-RP to provide
services for IPv6 BIDIR-PIM.
Configuring the maximum number of IPv6 BIDIR-PIM RPs
In an IPv6 BIDIR-PIM domain, one DF election per RP is implemented on all IPv6 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 IPv6 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 IPv6 multicast data
forwarding. The system does not delete these excess RPs. They must be deleted manually.
To configure the maximum number of RPs:
Step
1. Enter system view.
2. Enter IPv6 PIM view.
3. Configure
number of 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.
An IPv6 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 IPv6 BIDIR-PIM domain.
Command
system-view
ipv6 pim [ vpn-instance vpn-instance-name ]
c-rp ipv6-address [ advertisement-interval
adv-interval | { group-policy acl6-number |
scope scope-id } | holdtime hold-time | priority
priority ] * bidir
Command
system-view
ipv6 pim [ vpn-instance
vpn-instance-name ]
the maximum
bidir-rp-limit limit
303
Remarks
N/A
N/A
By default, no C-RP is
configured.
Remarks
N/A
N/A
The default upper limit is 6.