H3C Technologies H3C S12500 Series Switches - Manual (Page 159)

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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. Enable auto-RP. auto-rp enable Disabled by default.
Configuring C-RP timers globally
To enable the BSR to distribute the RP-set information within the BIDIR-PIM 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 in the network.
Each C-RP encapsulates a timeout value in its C-RP-Adv messages. After 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 within the timeout interval, the BSR assumes the C-RP to have expired
or become unreachable.
The C-RP timers need to be configured on C-RP routers.
For more information about the configuration of other timers in BIDIR-PIM, see "
Configuring PIM common
timers ."
To configure C-RP timers globally:
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 the C-RP-Adv
interval.
c-rp advertisement-interval interval
Optional.
60 seconds by default.
4. Configure C-RP timeout time. c-rp holdtime interval
Optional.
150 seconds by default.
Configuring a BSR
A BIDIR-PIM domain can have only one BSR, but must have at least one C-BSR. Any router can be
configured as a C-BSR. Elected from C-BSRs, the BSR collects and advertises RP information in the
BIDIR-PIM domain.
Configuring a C-BSR
C-BSRs must be configured on routers in the backbone network. When you configure a router as a C-BSR,
be sure to specify a PIM-SM-enabled interface on the router. The BSR election process is as follows:
• Initially, every C-BSR assumes itself to be the BSR of the BIDIR-PIM domain, and uses its interface IP
address as the BSR address to send bootstrap messages.
• When a C-BSR receives the bootstrap message of another C-BSR, it first compares its own priority
with the other C-BSR's priority carried in message. The C-BSR with a higher priority wins. If a tie
exists in the priority, the C-BSR with a higher IP address wins. The loser uses the winner's BSR