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To do… Use the command… Remarks
Configure a PIM domain border
pim bsr-boundary
Required
By default, no PIM domain
border is configured.
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.
Perform the following configuration on C-BSR routers.
Follow these steps to configure C-BSR parameters:
To do… Use the command… Remarks
Enter system view
system-view —
Enter public network PIM view or
VPN instance PIM view
pim [ vpn-instance vpn-
instance-name ]
—
Configure the hash mask length
c-bsr hash-length hash-length
Optional
30 by default
Configure the C-BSR priority c-bsr priority priority
Optional
By default, the C-BSR priority is 64.
NOTE:
bout the hash mask length and C-BSR priority, you can configure these parameters 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 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.
Follow these steps to configure C-BSR timers:
To do… Use the command… Remarks
Enter system view
system-view —
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