Dell Networking 7048, Справочное руководство

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OSPF Commands
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Syntax
timers pacing lsa-group
seconds
Parameter Description
Default Configuration
The default timer pacing is 60 seconds.
Command Mode
OSPFv2 Global Configuration mode
User Guidelines
OSPF refreshes self-originated LSAs approximately once every 30 minutes.
When OSPF refreshes LSAs, it considers all self-originated LSAs whose age is
from 1800 to 1800 plus the pacing group size. Grouping LSAs for refresh
allows OSPF to combine refreshed LSAs into a minimal number of LS
Update packets. Minimizing the number of Update packets makes LSA
distribution more efficient.
When OSPF originates a new or changed LSA, it selects a random refresh
delay for the LSA. When the refresh delay expires, OSPF refreshes the LSA.
By selecting a random refresh delay, OSPF avoids refreshing a large number of
LSAs at one time, even if a large number of LSAs are originated at one time.
timers spf
Use the timers spf command in Router OSPF Configuration mode to
configure the SPF delay and hold time. Use the no form of the command to
reset the numbers to the default value.
Syntax
timers spf
delay-time hold-time
no timers spf
Parameter Description
seconds Width of the window in which LSAs are refreshed. The range
for the pacing group window is from 10 to 1800 seconds.
2CSPC4.X7000-SWUM204.book Page 1235 Friday, March 15, 2013 8:22 AM