H3C Technologies H3C S7500E Series Switches - Manual (Page 371)

13-20
Configuring an RP
An RP can be manually configured or dynamically elected through the BSR mechanism. For a
large IPv6 PIM network, static RP configuration is a tedious job. Generally, static RP
configuration is just a backup means for the dynamic RP election mechanism to enhance the
robustness and operation manageability of a multicast network.
Configuring a static RP
If there is only one dynamic RP in a network, manually configuring a static RP can avoid
communication interruption due to single-point failures and avoid frequent message exchange
between C-RPs and the BSR.
Perform the following configuration on all the routers in the IPv6 PIM-SM domain.
Follow these steps to configure a static RP:
To do… Use the command… Remarks
Enter system view system-view —
Enter IPv6 PIM view pim ipv6 —
Configure a static RP
static-rp ipv6-rp-address
[ acl6-number ] [ preferred ]
Required
No static RP by default
To enable a static RP to work normally, you must perform this configuration on all routers in the
IPv6 PIM-SM domain and specify the same RP address.
Configuring a C-RP
In an IPv6 PIM-SM domain, you can configure routers that intend to become the RP as C-RPs.
The BSR collects the C-RP information by receiving the C-RP-Adv messages from C-RPs or
auto-RP announcements from other routers and organizes the information into an RP-Set,
which is flooded throughout the entire network. Then, the other routers in the network calculate
the mappings between specific group ranges and the corresponding RPs based on the RP-Set.
We recommend that you configure C-RPs on backbone routers.
To guard against C-RP spoofing, you need to configure a legal C-RP address range and the
range of IPv6 multicast groups to be served on the BSR. In addition, because every C-BSR has
a chance to become the BSR, you need to configure the same filtering policy on all C-BSRs in
the IPv6 PIM-SM domain.
Follow these steps to configure a C-RP:
To do... Use the command... Remarks
Enter system view system-view —