O'Reilly logo

BSCI Exam Cram™ 2 (Exam 642-801) by Ed Tittel, Michael J. Shannon

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

OSPF Operation in a Single Area NBMA Setting

A non-broadcast multi-access environment is one where there are more than two routers without a native broadcast capability. Frame Relay is a popular technology that commonly uses a NBMA implementation. Other examples of NBMA technologies are X.25 and Asynchronous Transfer Mode (ATM).

The most popular NBMA topology is frame relay, where a core router at a central site uses a single interface to connect several virtual circuits to several other sites over a frame cloud. A representation of this and other NBMA topologies is shown in Figure 4.9.

Figure 4.9. NBMA topologies.

OSPF approaches an NBMA environment ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required