3Com Switch 7750 SeriesCommand Reference Guide – Routing Protocol Chapter 4 Integrated IS-IS Configuration Commands4-334.1.38 spf-delay-intervalSyntaxspf-delay-interval numberundo spf-delay-intervalViewIS-IS viewParameternumber: Interval of releasing CPU during routing calculation, in the range of 1,000routes to 50,000 routes. It is 5,000 routes by default.DescriptionUse the spf-delay-interval command to set the interval of releasing CPU during SPFcalculation.Use the undo spf-delay-interval command to restore the default value.When there are two many routes in the routing table, you can use this command torelease CPU automatically after a certain number of routes are processed in order toprevent the SPF calculation from occupying the system resources for a long time toaffect the response of the console. The unprocessed routes are to be processed inone second.You can adjust the number argument according to the size of the routing table. If thespf-slice-size command is configured at the same time, the SPF calculation will bepaused if the SPF calculation matches any of the setting.By default, CPU is released when every 5,000 routes are processed.Related command: spf-slice-size.Example# Set IS-IS to release CPU when every 3,000 routes are processed.<3Com> system-viewSystem View: return to User View with Ctrl+Z.[3Com] isis[3Com-isis] spf-delay-interval 30004.1.39 spf-slice-sizeSyntaxspf-slice-size secondsundo spf-slice-size
