Gns3

Hey everyone,

I have been using Packet Tracer, and I have a few 2501s that I have been practicing on. I decided to try out GNS3 as I have read great things about it.

I am following the step-by-step PDF for beginners but running into a problem.

I am using IOS 12.3.

I keep getting this error when I try to start the router:

****Warning: ghostsize is too small for device R1. Increase it with ghostsize option.

I cannot get the console window to pop-up either.

I have tried researching how to increase this ghostsize option with no
success.

Also tried following the Blindhog tutorial, but cannot find one that addresses this ghostsize issue.

Dynamips has been successfully start (tested it from the Preferences pane). Can anyone help me out? Or point me in the right direction?

Find more posts tagged with

Free for TechExams community: Cybersecurity salary guide

Compare cert salaries and plan your next career move

Button

Comments

tiersten

What IOS image do you have and what settings?

tiersten

Without actually knowing what error you're getting, it is pretty hard to help you. The stuff that is scrolling past isn't gibberish or nonsense.

up2thetime

tiersten wrote: »

What IOS image do you have and what settings?

c2600 12.3(26)

Do you meant my Preferences Settings?

tiersten

up2thetime wrote: »

c2600 12.3(26)

Do you meant my Preferences Settings?

Settings like amount of RAM, WICs/NMs inserted and what model router it is trying to emulate.

up2thetime

Trying to do a 2621

Set to 64 MB of RAM

Idle PC is left blank

tiersten

What is the filename of the IOS you're trying to load?

Set it to 2621XM + RAM to 128MB and try again.

up2thetime

tiersten wrote: »

What is the filename of the IOS you're trying to load?

Set it to 2621XM + RAM to 128MB and try again.

Perfect!

Set RAM to 128 and it works!!!

Thank you!

Any tips on how I can get Putty to launch when I click Console?

Right now the cmd prompt loads.

I tried setting the Preferences as jbrad suggested on Page 1.

No luck as yet.

tiersten

up2thetime wrote: »

Perfect!

Set RAM to 128 and it works!!!

Thank you!

What is the filename?

You've probably got a 2600XM IOS which requires more than 64MB RAM to run.

up2thetime

tiersten wrote: »

What is the filename?

You've probably got a 2600XM IOS which requires more than 64MB RAM to run.

The .bin file?

tiersten

up2thetime wrote: »

The .bin file?

Yes. The name of the file before you decompressed it.

jbrad95706

up2thetime wrote: »

Perfect!

Set RAM to 128 and it works!!!

Thank you!

Any tips on how I can get Putty to launch when I click Console?

Right now the cmd prompt loads.

I tried setting the Preferences as jbrad suggested on Page 1.

No luck as yet.

blindhog.net GNS3 - How to use Putty for console access.

This is how to do it on the older version. The only thing that I can remember doing different is not having the "start" on the line. Just the c:\putty\ etc...

up2thetime

jbrad95706 wrote: »

blindhog.net GNS3 - How to use Putty for console access.

This is how to do it on the older version. The only thing that I can remember doing different is not having the "start" on the line. Just the c:\putty\ etc...

Got it.

Needed the start command!

I thought I wasn't supposed to include it!

up2thetime

tiersten wrote: »

Yes. The name of the file before you decompressed it.

Not at home computer. I believe it was c2600-9mz.123-26.bin

Will confirm when I get home.

tiersten

up2thetime wrote: »

Not at home computer. I believe it was c2600-9mz.123-26.bin

Yeah. You're missing part of the filename. "9mz" doesn't make any sense unless its k9mz and even then thats missing something.

up2thetime

tiersten wrote: »

Yeah. You're missing part of the filename. "9mz" doesn't make any sense unless its k9mz and even then thats missing something.

Sorry, I will get the right name once I get it.

Not familiar with IOS names and what they mean.

Post again shortly.

tiersten

up2thetime wrote: »

Sorry, I will get the right name once I get it.

Not familiar with IOS names and what they mean.

Post again shortly.

Cisco simplified the packaging and naming of IOS awhile ago. Read the IOS packaging PDF to work out what the various letters mean.

There are other very handy reference documents available as well.

up2thetime

tiersten wrote: »

Cisco simplified the packaging and naming of IOS awhile ago. Read the IOS packaging PDF to work out what the various letters mean.

There are other very handy reference documents available as well.

Thank you for that.

The name is: c2600-adventerprisek9-mz.123-26.bin

tiersten

up2thetime wrote: »

The name is: c2600-adventerprisek9-mz.123-26.bin

It is IOS for a 2600XM router and requires a minimum of 96MB RAM. Change your dynamips settings so it is a 2600XM of some kind.

up2thetime

Thank you!

Seems to work perfectly!