To set the timers back to their default values, enter a command such as the following.
device(config-ospf-router)# no timers spf 10 20
Syntax: [no] timers spf delay hold-time
The delay parameter species the SPF delay.
The hold-time parameter species the SPF hold time.
NOTE
OSPF incrementally updates the OSPF routing table when new Type-3 or Type-4 Summary, Type-5 External, or Type-7
External NSSA LSAs are received.
Modify redistribution metric type
The redistribution metric type is used by default for all routes imported into OSPF unless you specify dierent metrics for individual
routes using redistribution lters. Type 2 species a big metric (three bytes). Type 1 species a small metric (two bytes). The default value
is type 2.
To modify the default value to type 1, enter the following command.
device(config-ospf-router)# metric-type type1
Syntax: [no] metric-type type1 | type2
The default is type2.
Modify administrative distance
The device can learn about networks from various protocols, including Border Gateway Protocol version 4 (BGP4), RIP, and OSPF.
Consequently, the routes to a network may dier depending on the protocol from which the routes were learned. The default
administrative distance for OSPF routes is 110.
The router selects one route over another based on the source of the route information. To do so, the router can use the administrative
distances assigned to the sources. You can bias the decision the device makes by changing the default administrative distance for OSPF
routes.
Conguring administrative distance based on route type
You can congure a unique administrative distance for each type of OSPF route. For example, you can use this feature to prefer a static
route over an OSPF inter-area route but you also want to prefer OSPF intra-area routes to static routes.
The distance you specify inuences the choice of routes when the device has multiple routes for the same network from dierent
protocols. The device prefers the route with the lower administrative distance.
You can specify unique default administrative distances for the following route types:
• Intra-area routes
• Inter-area routes
• External routes
The default for all these OSPF route types is 110.
OSPF distribute list
FastIron Ethernet Switch Layer 3 Routing
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