In Part 1 of the Internet lab tutorial, we created a virtual "internet" using gns3. We built the infrastructure and configured a router to represent "The Internet" (ISP). This time, you will add switches and configure the internet routers at each customer site. Other tutorials will follow that use these two tutorials as a foundation.

gns3

 



 

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IP Addresses
————————————-
Router R1
FastEthernet 1/0 : 192.168.1.1 / 24
Serial 0/0 : 12.34.56.2 / 30

Router R2
FastEthernet 1/0 : 192.168.2.1 / 24
Serial 0/0 : 23.45.67.2 / 30

Router R3
FastEthernet 1/0 : 192.168.3.1 / 24
Serial 0/0 : 34.56.78.2 / 30

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Configuration demonstrated in this tutorial
——————————————–
Each router is configured with a variation of this configuration during this tutorial.

router(config)#hostname R1
router(config)#
router(config)#no logging console
router(config)#
router(config)#enable secret
router(config)#
router(config)#line vty 0 4
router(config)#password blindhog
router(config)#login
router(config)#
router(config)#line vty 5 15
router(config)#password blindhog
router(config)#login
router(config)#
router(config)#int f1/0
router(config-if)#desc Router R1 LAN
router(config-if)#no shut
router(config-if)#ip address 192.168.1.1 255.255.255.0
router(config-if)#
router(config-if)#int s0/0
router(config-if)#desc Internet Connection
router(config-if)#ip address 12.34.56.2 255.255.255.252
router(config-if)#no shut
router(config-if)#
router(config-if)#ip route 0.0.0.0 0.0.0.0 12.34.56.1
router(config-if)#end
router#wr

If you have questions regarding the theory behind this tutorial, I would like to suggest reading the CCNA series from Cisco Press or purchasing the Train Signal CCNA video training series from TrainSignal.com. Either option is a great way to learn Cisco and obtain your CCNA Certification.

 

 

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