1157Examples # Enable the sending of SNMP traps for all OSPF processes. system-view[Sysname] snmp-agent trap enable ospfspf-schedule-intervalSyntax spf-schedule-interval maximum-interval [ minimum-interval [ incremental-interval ] ]undo spf-schedule-intervalView OSPF viewParameters maximum-interval: Maximum SPF calculation interval in seconds, in the range 1 to60.minimum-interval: Minimum SPF calculation interval in milliseconds, in the range10 to 60000, which defaults to 0.incremental-interval: Incremental value for increasing SPF calculation interval inmilliseconds, in the range 10 to 60000, which defaults to 5000.Description Use the spf-schedule-interval command to set the OSPF SPF calculationinterval.Use the undo spf-schedule-interval command to restore the default.The interval defaults to 5 seconds.Based on its LSDB, an OSPF router calculates the shortest path tree with itselfbeing the root, and uses it to determine the next hop to a destination. Throughadjusting SPF calculation interval, you can protect bandwidth and router resourcesfrom being over-consumed due to frequent network changes.With this command configured, when network changes are not frequent, SPFcalculation applies at the minimum-interval. If network changes become frequent,the SPF calculation interval is incremented by the incremental-interval each time acalculation happens, up to the maximum-interval.Examples # Configure the SPF calculation maximum interval as 10 seconds, minimuminterval as 500 milliseconds and incremental interval as 200 milliseconds. system-view[Sysname] ospf 100[Sysname-ospf-100] spf-schedule-interval 10 500 200stub (OSPF area view)Syntax stub [ no-summary ]undo stub
