HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Command Referenc - Page 139
stub (OSPF area view), Usage guidelines, Examples, Syntax, Default, Views, Predefined user roles
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minimum-interval: Specifies the minimum OSPF SPF calculation interval in the range of 10 to 60000 milliseconds. incremental-interval: Specifies the incremental OSPF SPF calculation interval in the range of 10 to 60000 milliseconds. Usage guidelines Based on the LSDB, an OSPF router uses SPF to calculate a shortest path tree with itself as the root. OSPF uses the shortest path tree to determine the next hop to a destination. By adjusting the SPF calculation interval, you can prevent bandwidth and router resources from being over-consumed due to frequent topology changes. When network changes are not frequent, OSPF performs SPF calculations at the minimum-interval. If network changes become frequent, the SPF calculation interval is incremented by the incremental-interval each time a calculation happens until the maximum-interval is reached. The minimum interval and the incremental interval cannot be greater than the maximum interval. Examples # Configure the maximum SPF calculation interval as 10 seconds, minimum interval as 500 milliseconds and incremental interval as 300 milliseconds. system-view [Sysname] ospf 100 [Sysname-ospf-100] spf-schedule-interval 10 500 300 stub (OSPF area view) Use stub to configure an area as a stub area. Use undo stub to restore the default. Syntax stub [ default-route-advertise-always | no-summary ] * undo stub Default No area is a stub area. Views OSPF area view Predefined user roles network-admin Parameters default-route-advertise-always: Used only on a stub ABR. With this keyword, the ABR advertises a default route in a Type-3 LSA into the stub area regardless of whether FULL-state neighbors exist in the backbone area. Without this keyword, the ABR advertises a default route in a Type-3 LSA into the stub area only when at least one FULL-state neighbor exists in the backbone area. no-summary: Used only on a stub ABR. With this keyword, the ABR advertises only a default route in a Type-3 LSA into the stub area without advertising any other Type-3 LSAs (such a stub area is a totally stub area). 128