David’s Cisco Networking Blog

Aug 24 2008   9:15PM GMT

Four OSPF Router designations and their responsibilities

David Davis David Davis Profile: David Davis

OSPF Routers have different responsibilities depending on their position and functionality.  Let’s look at them-

The Internal Router – This router exists within an area. It’s responsible for maintaining a current and accurate database of every subnet within an area . It’s also responsible for forwarding data to other networks by the shortest path.

The Backbone Router – This router exists within the backbone area, also called Area 0.  On some routers, it’s also known as Area

The Area Border Router – Also known as ABR, it’s responsible for connecting two or more areas. It holds a full topological database for each area to which its connected and sends LSA updates between the areas.

The Autonomous System Boundary Router – Also known as ABSR, is used to connect to a network or routing protocol outside the OSPF domain. This router should reside in the backbone area.

 Comment on this Post

There was an error processing your information. Please try again later.
Thanks. We'll let you know when a new response is added.
Send me notifications when other members comment.

Forgot Password

No problem! Submit your e-mail address below. We'll send you an e-mail containing your password.

Your password has been sent to:

Share this item with your network: