- [Narrator] I will be using the west switch,
the one on the lower left,
to demonstrate how to configure a Cisco 2950
using the command line interface.
The first step in the process is to gain access
to the switches CLI.
There are two ways that you can do this.
In-band, which requires an active network connection,
or out-of-band, which requires physical access
to the switch.
Typically, new switches are configured out-of-band.
So we're going to assume this a brand new switch,
which means it doesn't have any existing configurations
and as such, we're going to need to access it out-of-band.
Out-of-band requires you to have a console cable,
which is a rollover ethernet cable,
meaning the wires on the opposite ends are reverse order.
These are often made from a flat, eight wire cable
and they can be purchased at several online sources.
The console cable is used to connect the console port
on the back of the switch to an RS232 port
on the west host.
Many of your computers, including laptops,
no longer ship with a serial port and as such,
you would need to purchase a USB to a DB9 adapter
so that you can connect the router
to the USB port on the PC.
Like a console cable, you can purchase
the USB to DB9 adapters online at any computer store.
Let me demonstrate how to set up the console connection
from the west host two PC to the west switch
in this packet tracer topology.
At the bottom of the screen
you see there's a lightning bolt.
The lightning bolt is the icon
for all of the connection types that are available
in packet tracer.
The cable that we want is the console cable
and that's indicated with this blue icon right here.
Click on the console cable icon,
click on the west host two,
that RS232
represents
the serial port.
We click on that.
Then we go up here and click on the switch,
scroll up to the console port, click on the console port,
and that gives us a console connection
between the west host and the switch.