Configuring A Bsr - H3C S5500-EI Configuration Manual

Step
3. 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 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 when this 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.
To configure C-RP timers globally:
Step
1. Enter system view.
2. Enter public network PIM view
or VPN instance PIM view.
3. Configure the C-RP-Adv
interval.
4. Configure C-RP timeout time.
For more information about the configuration of other timers in PIM-SM, see
timers."

Configuring a BSR

A PIM-SM 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 is responsible for collecting and advertising RP
information in the PIM-SM domain.
Configuring a C-BSR
C-BSRs should 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
summarized as follows:
Initially, every C-BSR assumes itself to be the BSR of this PIM-SM domain and uses its interface IP
1.
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
2.
with the other C-BSR's priority carried in the message. The C-BSR with a higher priority wins. If a
Command
auto-rp enable
Command
system-view
pim [ vpn-instance
vpn-instance-name ]
c-rp advertisement-interval interval
c-rp holdtime interval
156
Remarks
Disabled by default
Remarks
N/A
N/A
Optional
60 seconds by default
Optional
150 seconds by default
"Configuring PIM common