This lab runs on physical hardware provided for this workshop. The hardware comprises seven ethernet switches and one router per campus. Initially the method of access will be via the provided console cables connected to your laptops.


Lab access instructions

The instructors will divide the class into groups, where each group is responsible for the operation of a campus. Decide amongst yourselves which person will be responsible for configuring each switch.

There are eight Cisco devices on the table in front of you. They will be used in the following ways:

Device Usage
2901 Border Router
3750 Core Router
3560 Distribution & Edge Switches

The bottom two 3560 switches in each stack will be used as the Edge switches and the top 3560 as the Aggregation switch for the two buildings in your campus.

We will use the console cables to connect to the devices until we have configured them more fully.

You can download and install the drivers for the USB cable from:

Choose the correct drivers for your operating system and install them.

Connecting from Windows

You can use Putty1 to connect to the serial port created when the USB adapter is plugged in.

On the Putty window choose the Serial option and then change the Serial line to COM6. Leave the Speed set to 9600.

Select Open

You can disconnect from the switch by closing the window.

Connecting from Linux or Mac

You can use the command line application cu to connect to the the serial port created when the USB adapter is plugged in. You can identify the name of the device using:

$ ls /dev/cu.usbserial*

Then you can run:

$ sudo cu -9600 -l /dev/cu.usbserial-FTDX4U8N

You can disconnect from the switch by typing ~.

Once you are connected

You may need to hit Enter a few times to get a prompt from the switch which should look like:


If you are asked:

Would you like to enter the initial configuration dialog? [yes/no]:

answer no!

The router will show some initialization routines, and finally, you will see the default prompt:


You can then go into privileged mode:

Switch> enable 

And then enter configuration mode:

Switch# configure terminal

And you are ready to start entering configuration statements. When you are done, exit configuration mode by typing end or pressing ctrl-Z and save your changes:

Switch(config)# end
Switch# write memory


  1. The putty.exe programme is available on the workshop website, under the software heading in the references section. Windows users without a telnet client should download the software from the workshop website, and install it on their desktop (it doesn’t need administrator privileges). Once installed, simply click on it to run. Note that putty by default assumes connections will be by Secure Shell, so remember to select “telnet” and the correct port when making connections to the workshop lab equipment.