Just as a note. I was told that cisco is cracking down on folks using
compressed images of their IOS. Apparently if you read the Software users
agreement/license that's considered tampering with the product.
Be careful where you make mention of the use of this tool.
Nigel.
Thanks Brad...
----- Original Message -----
From: Jason A. Diegmueller <[EMAIL PROTECTED]>
Newsgroups: groupstudy.cisco
To: <[EMAIL PROTECTED]>
Sent: Monday, August 14, 2000 2:15 PM
Subject: Re: Compressing IOS Images with MZMAKER.EXE
> > A while back I read about a utility that would compress an IOS image,
> > but still allow you to use it. I found that I had archived a copy on a
> > CD, so I tried it out. It compressed a 14MB image down to 4.5MB. I
> > TFTP'd the compressed image to my 2524 and it rebooted. Upon reboot,
> > however, it wouldn't boot from the image.
> >
> > I don't recall what the error message was (something along the lines of
> > bad CRC), so I removed that image and replaced it with an uncompressed
> > IOS. Has anyone else used this or a similar program? I'm including a
> > link to the file. I'm told it's freeware. The link is only up for a
> > week or so, but it's on my public share (rtimmons) at xdrive.com, and
> > I'll leave it there indefinitely. I don't have any documentation for
> > this product.
>
> Yes.
>
> Even Cisco's "run from flash" hardware (2500, old 1600, etc)
> will boot a compressed image in to RAM. This is an "undocumented
> feature". MZMAKER.EXE uses the same algorithm as the unix-based
> "compress" tool. I've used this (compress, not MZMAKER) on
> numerous IOS images, and never had anything but success.
>
> Usually, though, if I'm looking to skimp on flash for lab
> purposes I'd just end up using a tftp server.
>
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