Configuring An Rp - 3Com MSR 50 Series Configuration Manual

1252 C 74: IP 6 PIM C
HAPTER V
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Configuring an RP

ONFIGURATION
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 IPv6 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
About the bootstrap timeout time
By default, the bootstrap timeout time is determined by this formula: Bootstrap
■
timeout = Bootstrap interval × 2 + 10. The default bootstrap interval is 60
seconds, 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.
CAUTION: In configuration, make sure that the bootstrap interval is smaller than
the bootstrap timeout time.
An RP can be manually configured or dynamically elected through the BSR
mechanism. For a large IPv6 PIM network, static RP configuration is a tedious job.
Generally, static RP configuration is just a backup means for the dynamic RP
election mechanism to enhance the robustness and operation manageability of a
multicast network.
Configuring a static RP
If there is only one dynamic RP in a network, manually configuring a static RP can
avoid communication interruption due to single-point failures and avoid frequent
message exchange between C-RPs and the BSR. To enable a static RP to work
Use the command...
system-view
Pim ipv6
c-bsr hash-length
hash-length
c-bsr priority priority
c-bsr interval interval
c-bsr holdtime interval
Remarks
-
-
Optional
126 by default
Optional
0 by default
Optional
For the system default, see
"Note" below.
Optional
For the system default, see
"Note" below.