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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 only one dynamic RP exists 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.
In IPv6 BIDIR-PIM, a static RP can be specified with a virtual IPv6 address. For example, if the IPv6
addresses of the interfaces at the two ends of a link are 1001::1/64 and 1001::2/64, you can specify
a virtual IPv6 address, like 1001::100/64, for the static RP. As a result, the link becomes an RPL.
To make a static RP to work normally, you must perform static RP configuration on all routers in the
IPv6 PIM-SM domain and specify the same RP address.
To configure a static RP:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter IPv6 PIM view.
pim ipv6
N/A
3.
Configure a static RP for
IPv6 BIDIR-PIM.
static-rp
ipv6-rp-address
[
acl6-number
] [
preferred
]
bidir
No static RP by default.
Configuring a C-RP
In an IPv6 BIDIR-PIM 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. Hewlett Packard
Enterprise recommends that you configure C-RPs on backbone routers.
To guard against C-RP spoofing, configure a legal C-RP address range and the range of multicast
groups to be served on the BSR. In addition, because every C-BSR has a chance to become the
BSR, you must configure the same filtering policy on all C-BSRs in the IPv6 BIDIR-PIM domain.
When configuring a C-RP, ensure a relatively large bandwidth between this C-RP and the other
devices in the IPv6 BIDIR-PIM domain.
To configure a C-RP:
Step Command Remarks
1.
Enter system view.
system-view
N/A
2.
Enter IPv6 PIM view.
pim ipv6
N/A
3.
Configure an interface to be
a C-RP for IPv6 BIDIR-PIM.
c-rp
ipv6-address
[
{
group-policy
acl6-number
|
scope
scope-id
} |
priority
priority
|
holdtime
hold-interval
|
advertisement-interval
adv-interval
]
*
bidir
No C-RP is configured by
default.
Enabling embedded RP
With the embedded RP feature enabled, the router can resolve the RP address directly from the IPv6
multicast group address of an IPv6 multicast packets. This RP can replace the statically configured
