How to configure Cisco router in GNS3
GNS3 a well-known network simulator use for configuring,
simulating or visualizing Cisco network devices. Using GNS3 you can create different
cisco networking lab. GNS3 uses real IOS images of
Cisco for creating networking labs. In this article I will
show you how to configure router in GNS3. For this you can follow these step:
Step-1 Add IOS in GNS3:
For simulating or using any network device in GNs3 you are
required the IOS images, you can download Cisco IOS images from here. Once you have
IOS images now you are required to add these IOS images into GNS3 so that you
can use them for networking labs. For this open the Edit\preferences (or press Ctrl+shift+P)
For more detail you can watch this Video:
Once you
finish this wizard you will find the IOS in top left panel under the router
section.
Step-2 Add Router to GNS3 Workplace:
Once you
able to adding IOS in GNS3, now you can use it for simulation labs. Drag routers
from left panel to workplace same like the following figure where I have added
two router to workplace.
For making
connection between two routers click on add
a link button from left panel and then click on router for making connection
and choose the interface like “fastether0” and then click on the other for
creating connection between them.
Add more interface in GNS3 router
You can
change or add any other desire module in you router. For this double click on the router for adding
other interfaces/Modules. Now from the slot
tab select your desire module from dropdown module.
After adding
more module your will find more interfaces in your router as shown in the
following figure.
Step-3 How to Configure Router in GNS3:
Now start
any router which want to configure for this right click on the router and then click on the start.
Right click on it and then click on the console, this will open the router
console from where you configure your cisco router. It will takes some time
while loading the IOS once it is loaded you can start configuring it. Press
enter it will take you to the default mode that is User EXEC Mode (Router >). Use enable command from user exec mode for
entering into Privileged EXEC mode.
You can try
different Cisco Command and can configure your router for example if you want
to change router name you can change it using command hostname in global configuration mode.
for
configuring IP address to any Cisco device interface by using the following
commands:
Router(config)#interface fastethernet0/1
Router(config-if)#ip
address 192.168.22.1 255.255.255.0
Above
command will set the IP address of interface fastethernet0/1 to 192.168.22.1.
For more Cisco commands you can visit here: Cisco basiccommands for beginners
I hope this
is informative for you, if you still having any issue while configuring router
in GNS3 you can ask any question in commands. Thank you for visiting and reading
this.
