In one of my previous tutorials, i had used Putty Connection Manager for Console Access which helps centralizing all your consoles into a single window with easy tabbing in between different router consoles. This tutorial shows yet another way of achieving same functionality.This time, i  will setup an Access Server/Console Server/Terminal Server, whatever you name it in order to access all lab devices from a single console.

Normally, people practicing for CCIE lab find this approach useful by setting up terminal server  in their labs.

Its pretty to easy setup.Here is the topology diagram i have been using in my labs for demonstration purpose:


Enjoy tutorial!

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19 Responses to “GNS3: How to setup Terminal Server for CCIE Labs”

  1. W says:

    How do you turn on the hq console port 2000? Thank you

  2. WT says:

    Hello, thank you for sharing this great instruction. I have been dieing to know how to navigate around the router with through access terminal.

    I followed your instruction and here is what I got when I connected to other routers from access terminal

    Password required, but none set

    Connection to host lost.

    What should I do? Why mine pop up password like that?

  3. W says:

    Could you please how me the configuration of hq router? The reasons is that I can’t log in to the router that I’m working with, it keeps ask me

    Password required, but none set

    Connection to host lost.
    Thank you for your help

  4. admin says:

    @W,you can specify which console port you wanna use using GNS3.

    @WT,setup enable password and vty line passwords first before telnetting.

  5. Majid Khan says:

    Very helpful indeed !Thanks

  6. El-Emin says:

    Esselamu alejkum.
    Great job. Keep going.

  7. Muhammad Shehzad Arshad says:

    please let me know how to configure loopback0 with cloud and on putty or pc

  8. durga says:

    how is the terminal server connected to the other routers.

    can u please eleaborate more..

  9. Patrice says:

    Thank you so much Tariq for this post. I went through your video and was able to hook up my terminal server without any problem.
    I have a quick question for you, I have a client-server topology and through the terminal server I cannot access any device not running on the same computer as my terminal server. Do you have a trick for that?

  10. Tariq Ahmad says:

    @Shahzad,@durga,Kindly re-watch tutorial as things are already explained in there.

    @Patrice,thnx for nice comment.Did you try to replace Loopback with your LAN interface IP? Port mapping can be other alternative.

  11. Tony says:

    I was having some problems following your lab operating inside a virtual machine environment and still being able to access the telnet session from the outside world. Of course I could have setup two interfaces, one for the loopback adapter, and another for the ethernet connection, but that is no fun now.

    *******Only pertains to accessing the configured port to the Terminal Server from outside a virtual machine***********

    So, what I ended up having to do was configure as per your directions, and create a bridge network adapter, inside my VM between the loopback adapter and the virtual VM adapter.

    Here is the best I can do to describe in text how I set this configuration up.

    HostPC–VMNet9—>VMHost—Bridge(VMNet9 & loop100)—>GNS

    Maybe there is a way to directly advertise your host machines loopback adapter to the VM, but I was not able to figure out how without compromising my primary bridge. Just thought I would contribute because I have spent like 4 hours trying to figure this out. Hope this helps.

  12. nemo says:

    I have followed your configuration on the access server but i have no idea how to configure the client routers. I have tried connecting but it just times out. I am really frustrated. I have spend an entire day trying to get this thing to work.

  13. nemo says:

    How does the server know how to get to the client routers? That is the confusing thing. I have viewed your tutorial over and over and still something is missing.

  14. Aravinth says:

    Hi, I an looking for solution for Linux Distro. I setup on windows 2003 and it’s running so slow. i tried on Ubuntu Lab is running much better, but i am unable to create access server in Ubuntu 9.10 can any one help me on this matter

  15. Tariq Ahmad says:

    @nemo, have you created loopback interface in your pc

    @Aravinth, concept is same. if you follow steps , you shouldn’t have any issues running terminal server in linux distro (ubuntu).

  16. Uldis says:

    Check Windows firewall settings on loopback adapter. I spent lot of time to find why Terminal server refusing connection.
    Enable inbound connection
    Now it works

  17. roomaan says:

    how could we configure ip phone , in gns3 where coul i find ip phone

  18. amit says:

    hi uldis ,
    you r great man ,i only off my firewal and get access to the router

    thanks man

  19. Ahmed says:

    Salam Alikom

    I’d like to thank you and let you know that I followed you instructions but yet not able to access routers.

    - I configured vty and console ports plus the enable password, just in case. But still unable, and here is what I get:

    Translating “R1″
    Trying R1 (, 2000)…
    % Connection timed out; remote host not responding

    Waiting & appreciating your effort
    Salam Alikom

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