- [Instructor] The switch I have selected
for this demonstration is a Cisco 2950 Catalyst Switch
running IOS 2950 software.
It includes flash memory, the IOS image is stored there
as well as the VLAN database.
That VLAN database file is called VLAN.dat.
Additionally, there's NVRAM and the NVRAM is a special type
of flash memory that is used to store
the configuration file.
The commands on the switch
depend not only on the type of switch that you are using,
but also on active IOS version
that is running on the switch.
Additionally, the commands in Packet Tracer
may differ from those commands
that are available on an actual switch.
I'm now going to show you the Packet Tracer typology
I'm going to use for this course.
The Packet Tracer typology includes three routers.
West, north, and east, and includes three switches.
The west switch, the east switch, and the north switch.
There are six host PCs,
which are attached to each of the switches
with ethernet cables.
Additionally, there is a connection out to the ISP.
Finally, the routers west to north
and north to east are connected with red serial cables.
And that's the Packet Tracer topology.