O'Reilly logo

CCIE Fundamentals: Network Design and Case Studies, Second Edition by Cisco Systems, Inc.

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

Appendix A. Subnetting an IP Address Space

This appendix provides a partial listing of a Class B area intended to be divided into approximately 500 Open Shortest Path First (OSPF) areas. For the purposes of this example, the network is assumed to be a Class B network with the address 150.100.0.0.

Note

Although a 500-area OSPF network is unrealistic, using an address space like this can help illustrate the general methodology employed to subnet an OSPF address space.

Only the address space for 2 of 512 areas is shown in . These areas are defined with the base address 150.100.2.0. Illustrating the entire address space for 150.100.0.0 would require hundreds of additional pages of addressing information. Each area would require the equivalent number ...

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