Networking Devices Used in the Preparation of This Book

In order to verify the commands that are in this book, I had to try them out on a few different devices. The following is a list of the equipment I used in the writing of this book:

• C1720 router running Cisco IOS Software Release 12.0(1)XA3, with a fixed Fast Ethernet interface, and a WIC-2A/S serial interface card

• C2501 router running Cisco IOS Software Release 11.0(10c)XB1, with a fixed Ethernet interface, and two fixed serial interfaces

• C2620 router running Cisco IOS Software Release 12.0(7)T, with a fixed Fast Ethernet interface, a WIC-2A/S serial interface card, and an NM-1E Ethernet interface

• WS-C1912-EN Catalyst switch, running Enterprise Edition software

• WS-C2912-XL Catalyst switch, running version 12.0(5.3)WC(1) Enterprise Edition software

• WS-C2950-12 Catalyst switch, running version C2950-C3.0(5.3)WC(1) Enterprise Edition software

These devices were not running the latest and greatest versions of IOS. Some of it is quite old.

Those of you familiar with Cisco devices will recognize that a majority of these commands work across the entire range of the Cisco product line. These commands are not limited to the platforms and IOS versions listed. In fact, these devices are in most cases adequate for someone to continue their studies into the CCNP level as well.