Dell PowerConnect 8100 CLI Reference Guide - Page 1285

Syntax timers pacing lsa-group seconds Parameter Description Parameter seconds Description Width of the window in which LSAs are refreshed. The range for the pacing group window is from 10 to 1800 seconds. 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 OSPF Commands 1285