3Com MSR 50 Series Configuration Manual page 1181

To do...
Configure a BSR admin-scope
region boundary
Configuring global C-BSR parameters
The BSR election winner advertises its own IP address and RP-set information
throughout the region it serves through bootstrap messages. The BSR floods
bootstrap messages throughout the network periodically. Any C-BSR that receives
a bootstrap message maintains the BSR state for a configurable period of time
(BSR state timeout), during which no BSR election takes place. When the BSR state
times out, a new BSR election process will be triggered among the C-BSRs.
Follow these steps to configure global C-BSR parameters:
To do...
Enter system view
Enter public instance PIM view
or VPN instance PIM view
Configure the Hash mask
length for RP selection
calculation
Configure the C-BSR priority
Configure the bootstrap
interval
Configure the bootstrap
timeout time
n
About the bootstrap timeout time
By default, the bootstrap timeout value is determined by this formula:
■
Bootstrap timeout = Bootstrap interval × 2 + 10. The default bootstrap interval
is 60 seconds, and so the default bootstrap timeout = 60 × 2 + 10 = 130
(seconds).
If this parameter is manually configured, the system will use the configured
■
value.
About the bootstrap interval
By default, the bootstrap interval is determined by this formula: Bootstrap
■
interval = (Bootstrap timeout - 10) / 2. The default bootstrap timeout is 130
seconds, so the default bootstrap interval = (130 - 10) / 2 = 60 (seconds).
If this parameter is manually configured, the system will use the configured
■
value.
c
CAUTION: In configuration, make sure that the bootstrap interval is smaller than
the bootstrap timeout time.
Use the command...
pim bsr-boundary
Use the command...
system-view
pim [ vpn-instance
vpn-instance-name ]
c-bsr hash-length
hash-length
c-bsr priority priority
c-bsr interval interval
c-bsr holdtime interval
Configuring PIM-SM 1181
Remarks
Required
No BSR admin-scope region
boundary by default
Remarks
-
-
Optional
30 by default
Optional
0 by default
Optional
For the system default, see
"Note" below.
Optional
For the system default, see
"Note" below.