HP 4800G Series Configuration Manual page 839

To do...
Configure a PIM domain border
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 corresponding to specific multicast groups.
Perform the following configuration on C-BSR routers.
Follow these steps to configure C-BSR parameters:
To do...
Enter system view
Enter PIM view
Configure the Hash mask
length
Configure the C-BSR priority
About the Hash mask length and C-BSR priority:
You can configure these parameters at three levels: global configuration level, global scope zone
level, and admin-scope zone level.
The value of these parameters configured at the global scope zone level or admin-scope zone level
have preference over the global values.
If you do not configure these parameters at the global scope zone level or admin-scope zone level,
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 zone.
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 the BSR state times
out and no bootstrap message is received from the BSR, a new BSR election process is triggered
among the C-BSRs.
Perform the following configuration on C-BSR routers.
Use the command...
pim bsr-boundary
Use the command...
system-view
pim
c-bsr hash-length hash-length
c-bsr priority priority
1-23
Remarks
Required
By default, no PIM domain
border is configured.
Remarks
—
—
Optional
30 by default
Optional
By default, the C-BSR priority is 0.