HP MSR2000/3000/4000 Router Series IP Multicast Configuration Guide

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Configuring a static RP
If only one dynamic RP exists on a network, you can configure a static RP to avoid communication
interruption caused by single-point failures. It can also avoid waste of bandwidth due to frequent
message exchange between C-RPs and the BSR. The static RP configuration must be the same on all
routers in the IPv6 PIM-SM domain.
To configure a static RP:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter IPv6 PIM view.
ipv6 pim [ vpn-instance
vpn-instance-name ]
N/A
3. Configure a static RP for IPv6
PIM-SM.
static-rp ipv6-rp-address
[ acl6-number | preferred ] *
By default, no static RP is
configured.
Configuring a C-RP
In an IPv6 PIM-SM 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, and organizes the C-RP information into the RP-set
information, which is flooded throughout the entire network. Then, the other routers in the network can
determine the RPs for different IPv6 multicast group ranges based on the RP-set information. HP
recommends configuring C-RPs on backbone routers.
To enable the BSR to distribute the RP-set information in the PIM-SM 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 regards the C-RP failed or
unreachable.
To guard against C-RP spoofing, you must configure a legal C-RP address range and the multicast group
range to which the C-RP is designated. In addition, because every C-BSR might become the BSR, you
must configure the same filtering policy on all C-BSRs in the IPv6 PIM-SM domain.
When you configure a C-RP, reserve a relatively large bandwidth between the C-RP and the other devices
in the IPv6 PIM-SM domain.
To configure a C-RP:
Ste
p
Command Remarks
1. Enter system view.
system-view
N/A
2. Enter IPv6 PIM view.
ipv6 pim [ vpn-instance
vpn-instance-name ]
N/A
3. Configure a C-RP.
c-rp ipv6-address [ advertisement-interval
adv-interval | { group-policy acl6-number
| scope scope-id } | holdtime hold-time |
priority priority ] *
By default, no C-RP is
configured.