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he 1900 switch is a low-end model in the Cisco Catalyst

switch family. There are actually two different models associated with the
Catalyst 1900 switch: the 1912 and the 1924. The 1912 switches have 12
10BaseT ports, and the 1924 switches have 24 10BaseT ports. Each has two
100Mbps uplinks--either twisted-pair or fiber.

Since the 1900 switch can now run a version of the Cisco IOS, you can use

it to thoroughly understand switching through all Cisco switching products.
Not all Cisco switches run a version of the IOS, but they will eventually.

In this appendix, you will learn how to start up and configure a Cisco Cat-

alyst 1900 switch using the command-line interface (CLI). I will begin by
explaining how to connect a console cable, then I will discuss what happens
when a 1900 switch is powered up. After you learn how to connect a console
cable to the switch and get the switch working, I will teach you the basic con-
figuration commands that you can use on the 1900 switch.

After you learn the basic commands, I will show you how to configure vir-

tual LANs (VLANs) on the switch, as well as ISL routing and VLAN Trunk
Protocol (VTP).

The basic tasks covered in this appendix include the following:

Setting the passwords

Setting the hostname

Configuring the IP address and subnet mask

Identifying the interfaces

Setting a description on the interfaces

Defining the port duplex of a port

Verifying the configuration

Managing the MAC address table

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