administrative distance

The following table gives the default administrative distances used by Cisco routers.

An administrative distance of 255 will cause the router to disbelieve the route entirely and not use it.

Administrative distance defines the reliability of a routing protocol.

Implementers generally have a numerical preference, which Cisco calls an "administrative distance", for route selection.

Each routing protocol is prioritized in order of most to least reliable (believable) using an administrative distance value.

Since IOS 12.2, the administrative distance of a static route with an exit interface is 1.

Cisco - What is Administrative Distance?

But too often a heavy ironization of the fictional process intrudes; and this is also used against most of the secondary characters in a manner suggestive of callous administrative distance.

In the Cisco operating system, iBGP routes have an administrative distance of 200, which is less preferred than either external BGP or any interior routing protocol.

Cisco routers, for example, attribute a value known as the administrative distance to each route, where smaller administrative distances indicate routes learned from a supposedly more reliable protocol.

Administrative distance is the measure used by Cisco routers to select the best path when there are two or more different routes to the same destination from two different routing protocols.

A lower numerical value is preferred, e.g. an OSPF route with an administrative distance of 110 will be chosen over a RIP route with an administrative distance of 120.