HP 6125G Configuration Manual page 133

Configuring global C-BSR parameters
In each PIM-SM domain, a unique BSR is elected from C-BSRs. The C-RPs in the PIM-SM domain send
advertisement messages to the BSR. The BSR summarizes the advertisement messages to form an RP-set
and advertises it to all routers in the PIM-SM domain. All the routers use the same hash algorithm to get
the RP address that corresponds to specific multicast groups.
You can configure the hash mask length and C-BSR priority globally, in an admin-scope zone, and in the
global scope zone.
The values configured in the global scope zone or admin-scope zone have preference over the
•
global values.
• If you do not configure these parameters in the global scope zone or admin-scope zone, the
corresponding global values will be used.
For configuration of C-BSR parameters for an admin-scope zone and global scope zone, see
"Configuring C-BSRs for each admin-scope zone and the global-scope
Perform the following configuration on C-BSR routers.
To configure C-BSR parameters:
Step
1. Enter system view.
2. Enter PIM view.
3. Configure the hash mask
length.
4. Configure the C-BSR priority.
Configuring C-BSR timers
The BSR election winner multicasts its own IP address and RP-set information through bootstrap messages
within the entire zone it serves. The BSR floods bootstrap messages throughout the network at the interval
of BS (BSR state) period. Any C-BSR that receives a bootstrap message retains the RP-set for the length of
BS timeout, during which no BSR election takes place. If no bootstrap message is received from the BSR
before the BS timeout timer expires, a new BSR election process is triggered among the C-BSRs.
Perform the following configuration on C-BSR routers.
To configure C-BSR timers:
Step
1. Enter system view.
2. Enter PIM view.
Command
system-view
pim
c-bsr hash-length hash-length
c-bsr priority priority
Command
system-view
pim
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zone."
Remarks
N/A
N/A
Optional.
30 by default.
Optional.
By default, the C-BSR priority is 64.
Remarks
N/A
N/A