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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
PIM-SM.
static-rp
rp-address
[
acl-number
]
[
preferred
]
No static RP exists by default.
Configuring a C-RP
In a 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. Hewlett Packard
Enterprise recommends you configure C-RPs on backbone routers.
To guard against C-RP spoofing, you must 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 can become the BSR,
you must configure the same filtering policy on all C-BSRs in the PIM-SM domain.
When you configuring a C-RP, ensure a relatively large bandwidth between this C-RP and the other
devices in the PIM-SM domain.
To configure a C-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 an interface to be
a C-RP for PIM-SM.
c-rp
interface-type interface-number
[
group-policy
acl-number
|
priority
priority
|
holdtime
hold-interval
|
advertisement-interval
adv-interval
]
*
No C-RPs are configured by
default.
4.
Configure a legal C-RP
address range and the range
of multicast groups to be
served.
crp-policy
acl-number
Optional.
No restrictions by default.
Enabling auto-RP
Auto-RP announcement and discovery messages are addressed to the multicast group addresses
224.0.1.39 and 224.0.1.40, respectively. When auto-RP is enabled on a device, the device can
receive these two types of messages and record the RP information carried in such messages.
To enable auto-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.
Enable auto-RP.
auto-rp enable
Disabled by default.