HP 4800G Series Configuration Manual page 836

To do...
Enter system view
Enter PIM view
Configure an interface to be a
C-RP
Configure a legal C-RP
address range and the range of
multicast groups to be served
When configuring a C-RP, ensure a relatively large bandwidth between this C-RP and the other
devices in the PIM-SM domain.
An RP can serve multiple multicast groups or all multicast groups. Only one RP can forward
multicast traffic for a multicast group at a moment.
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. With auto-RP enabled on a device, the device can receive
these two types of messages and record the RP information carried in such messages.
Follow these steps to enable auto-RP:
To do...
Enter system view
Enter PIM view
Enable auto-RP
Configuring C-RP timers globally
To enable the BSR to distribute the RP-set information within the PIM-SM domain, C-RPs must
periodically send C-RP-Adv messages to the BSR. The BSR learns the RP-set information from the
received messages, and encapsulates its own IP address together with the RP-set information in its
bootstrap messages. The BSR then floods the bootstrap messages to all PIM routers (224.0.0.13) in
the network.
Each C-RP encapsulates a timeout value in its C-RP-Adv messages. Upon receiving a C_RP-Adv
message, the BSR obtains this timeout value and starts a C-RP timeout timer. If the BSR fails to hear a
subsequent C-RP-Adv message from the C-RP when the timer times out, the BSR assumes the C-RP
to have expired or become unreachable.
The C-RP timers need to be configured on C-RP routers.
Use the command...
system-view
pim
c-rp interface-type
interface-number [ group-policy
acl-number | priority priority |
holdtime hold-interval |
advertisement-interval
adv-interval ] *
crp-policy acl-number
Use the command...
system-view
pim
auto-rp enable
1-20
Remarks
—
—
Required
No C-RPs are configured
by default
Optional
No restrictions by default
Remarks
—
—
Required
Disabled by default