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Gns3 Labs Download



  1. Gns3 Ccie Labs Download
  2. Download Gns3 For Windows

Well, the title said it all. Here are some screenshots of the labs in GNS3:

+ OSPF Sim:

+ IPv6 OSPF Virtual Link Sim:

Welcome to the GNS3 Ultimate labs course! New labs will be added on a regular basis. But, also tell me which topics you want added to the course and I will do my best to add them!

+ EIGRP OSPF Redistribution Sim:

+ EIGRP Stub Sim:

+ Policy Based Routing Sim:

Link to download these ROUTE lab sims:

Note:

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+ For GNS3 Lab sims on digitaltut please use old version of GNS3 (v0.8.3.1 is recommended) so that you can open it.
+ You have to find the IOS by yourself to run these labs. The IOS used in these labs is c2691-adventerprisek9-mz.124-5a.
+ You also need to modify the image path in the “.net” topology file to match your IOS folder path.
+ In real exam, you have to click on host (PC) to access command-line-interface of the router, not the router itself.

In this tutorial we will learn how to use EIGRP to run a small network with 5 routers. Below is the topology of this lab

This lab consists of 5 routers and we need to configure EIGRP among them. It is done when we can successfully ping among R2, R3, R4 & R5 and the routing tables of these routers show that they are running EIGRP (with letter “D”).

IOS used in this tutorial: c2600-bin-mz.123-6f.bin (with a minimum of 64 MB RAM) but you can use other IOS.

Note: If you are not sure about EIGRP, please read my EIGRP Routing Protocol tutorial first

IP addresses of routers:

+ R1:
s0/0 – 192.168.30.12/28
s0/1 – 192.168.30.18/28
s0/2 – 192.168.30.35/28
f0/0 – 192.168.60.10/28

+ R2:
s0/0 – 192.168.30.13/28

+ R3:
f0/0 – 192.168.60.13/28 Free photoshop alternative for mac.

+ R4:
s0/0 – 192.168.30.20/28

+ R5:
s0/0 – 192.168.30.40/28

If you are not sure about EIGRP, please read my article about this routing protocol at https://www.9tut.com/eigrp-routing-protocol

Some important notes about EIGRP:

+ All routers must use the same Autonomous System (AS) number to recognize each other. In this case the chosen AS is 100.
+ The major network in this lab is 192.168.30.0 & 192.168.60.0 so there will be discontiguous networks -> need to use the “no auto-summary” command.

Now let’s begin the lab!

Step 1 – Configuring IP addresses on the routers

*On R1:
R1#config t
R1(config)#int s0/0
R1(config-if)#ip address 192.168.30.12 255.255.255.240
R1(config-if)#no shut
R1(config-if)#int s0/1
R1(config-if)#ip address 192.168.30.18 255.255.255.240
R1(config-if)#no shut
R1(config-if)#int s0/2
R1(config-if)#ip address 192.168.30.35 255.255.255.240
R1(config-if)#no shut
R1(config-if)#int f0/0
R1(config-if)#ip address 192.168.60.10 255.255.255.240
R1(config-if)#no shut

*On R2:
R2#config t
R2(config)#int s0/0
R2(config-if)#ip address 192.168.30.13 255.255.255.240
R2(config-if)#no shut

*On R3:
R3#config t
R3(config)#int f0/0
R3(config-if)#ip address 192.168.60.13 255.255.255.240
R3(config-if)#no shut

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R4#config t
R4(config)#int s0/0
R4(config-if)#ip address 192.168.30.20 255.255.255.240
R4(config-if)#no shut

*On R5:
R5#config t
R5(config)#int s0/0
R5(config-if)#ip address 192.168.30.40 255.255.255.240
R5(config-if)#no shut

Now all the interfaces are up. We should check the interfaces on R1 to confirm this with the “show ip int brief” command

Notice that all both the “Status” and “Protocol” of the connected interfaces were up.

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We can see all the neighbors of R1 with the “show cdp neighbors” command on R1:

At this time we can ping between two directly connected interfaces. For example a ping from s0/0 of R1 to s0/0 of R2 (192.168.30.13) will be successful.

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but a ping between two far-away interfaces is not successful. For example a ping from R2 to s0/0 of R4 (192.168.30.20) will be unsuccessful.

If we use the “show ip route” on these routers we will only see directly connected link.

Step 2 – Enable EIGRP on all the routers

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*On R1
R1(config)#router eigrp 100
R1(config-router)#network 192.168.30.0
R1(config-router)#network 192.168.60.0
R1(config-router)#no auto-summary

*On R2
R2(config)#router eigrp 100
R2(config-router)#network 192.168.30.0
R2(config-router)#no auto-summary

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*On R3
R3(config)#router eigrp 100
R3(config-router)#network 192.168.60.0
R3(config-router)#no auto-summary

*On R4
R4(config)#router eigrp 100
R4(config-router)#network 192.168.30.0
R4(config-router)#no auto-summary

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*On R5
R5(config)#router eigrp 100
R5(config-router)#network 192.168.30.0
R5(config-router)#no auto-summary

After typing above commands we will see the neighbors adjacency on these routers are up. For example on R1 we will see

Now the EIGRP process is up and we can ping from anywhere. For example a ping from R2 to s0/0 of R4 (192.168.30.20) will be successful now.

By checking the routing table of R2, R3, R4 & R5 we can confirm EIGRP has been implemented successfully. For example, using the “show ip route” command on R5 we see

Notice that the routes to 192.168.30.16 & 192.168.60.0 are marked with a letter “D”, meaning it is learned via EIGRP. Maybe you are wondering “why is the letter “D” used for EIGRP, not “E”? Well, the answer is the letter “E” has been “stolen” for EGP – an external routing protocol – but it is not popular nowadays :)

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We can check the neighbor relationships on these routers with the “show ip eigrp neighbors” command. Below is an example of R1:

To see the topologies of these routers, use the “show ip eigrp topology” command. Below is the output of R4

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TROUBLESHOOTING part

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In this part, we created a faulty network and your task is to find out and fix the errors to make the network run perfectly. You can download the files here: Download faulty network