R21xx-HP FlexFabric 11900 IP Multicast Configuration Guide

164
Ste
p
Command Remarks
1. Enter system view.
system-view
N/A
2. Enter IPv6 PIM view.
ipv6 pim 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 on the BSR. 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 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.
4. (Optional.) Configure a legal
C-RP address range and the
IPv6 multicast group range to
which the C-RP is designated.
crp-policy acl6-number
By default, no restrictions are
defined.