150
Step Command
Remarks
view or VPN instance PIM
view.
vpn-instance-name
]
3.
Enable BIDIR-PIM.
bidir-pim enable
Disabled by default.
Configuring an RP
CAUTION:
When both PIM-SM and BIDIR-PIM run on the PIM network, do not use the same RP to serve
PIM-SM and BIDIR-PIM. Otherwise, exceptions might occur to the PIM routing table.
An RP can be manually configured or dynamically elected through the BSR mechanism. For a large
PIM network, static RP configuration is a tedious job. Generally, static RP configuration is just used
as a backup method 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 BIDIR-PIM, a static RP can be specified with a virtual IP address. For example, if the IP addresses
of the interfaces at the two ends of a link are 10.1.1.1/24 and 10.1.1.2/24, you can specify a virtual IP
address, like 10.1.1.100/24, for the static RP. As a result, the link becomes an RPL.
You must perform static RP configuration on all routers in the BIDIR-PIM 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 public network PIM
view or VPN instance PIM
view.
pim
[
vpn-instance
vpn-instance-name
]
N/A
3.
Configure a static RP for
BIDIR-PIM.
static-rp
rp-address
[
acl-number
]
[
preferred
]
bidir
No static RP by default.
Configuring a C-RP
In a 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 BIDIR-PIM domain.
When you configure a C-RP, set a relatively large bandwidth between this C-RP and the other
devices in the BIDIR-PIM domain.
To configure a C-RP:
