How to use administrative distance

Administrative distance is a parameter used by the router to choose a route learned through a specific routing protocol, if the same route is learned through more than one protocol.

In other words, it indicates the believability of a certain protocol.

Every routing protocol and static route has a default administrative distance value which can be modified depending on the need.

The lower the value, the more preferred is the route.

Changing the administrative distance is required in situations when a specific path is preferred over a different path, such as dial back-up scenarios, and when multiple routing protocols are deployed in a network with mutual redistribution happening between them.

For more information about administrative distance refer to:

What Is Administrative Distance?

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• Cisco
• LANs / WANs
• Default administrative distance value
• Dial back-up scenarios
• Multiple routing protocols are deployed in a network
• Network with mutual redistribution
• Routing protocol and static route