1224 BigIron RX Series Configuration Guide53-1002253-01Configuring OSPFv348BigIron RX(config-ospf6-router)# timers spf 10 20Syntax: timers spf <delay> <hold-time>For the <delay> and <hold-time> parameters, specify a value from 0 – 65535 seconds.To set the timers back to their default values, enter the no version of this command.Modifying administrative distanceThe Brocade device can learn about networks from various protocols, including BGP4+, IPv6 IS-IS,RIPng, and OSPFv3. Consequently, the routes to a network may differ depending on the protocolfrom which the routes were learned. By default, the administrative distance for OSPFv3 routes is110.The device selects one route over another based on the source of the route information. To do so,the device can use the administrative distances assigned to the sources. You can influence thedevice’s decision by changing the default administrative distance for OSPFv3 routes.Configuring administrative distance based on route typeYou can configure a unique administrative distance for each type of OSPFv3 route. For example,you can use this feature to influence the Brocade device to prefer a static route over an OSPFinter-area route and to prefer OSPF intra-area routes to static routes.The distance you specify influences the choice of routes when the device has multiple routes to thesame network from different protocols. The device prefers the route with the lower administrativedistance.You can specify unique default administrative distances for the following OSPFv3 route types:• Intra-area routes• Inter-area routes• External routesThe default for all of these OSPFv3 route types is 110.NOTEThis feature does not influence the choice of routes within OSPFv3. For example, an OSPF intra-arearoute is always preferred over an OSPF inter-area route, even if the intra-area route’s distance isgreater than the inter-area route’s distance.For example, to change the default administrative distances for intra-area routes to 80, inter-arearoutes to 90, and external routes to 100, enter the following commands.BigIron RX(config-ospf6-router)# distance intra-area 80BigIron RX(config-ospf6-router)# distance inter-area 90BigIron RX(config-ospf6-router)# distance external 100Syntax: distance external | inter-area | intra-area <distance>The external | inter-area | intra-area keywords specify the route type for which you are changingthe default administrative distance.The <distance> parameter specifies the new distance for the specified route type. You can specifya value from 1 – 255.
