Re: What IOS really does with commands (was Re: ISIS Problem.

From: loc.pham@comcast.net
Date: Mon Mar 29 2004 - 04:10:40 GMT-3


Thank you.
> At 6:17 AM +0000 3/29/04, loc.pham@comcast.net wrote:
> >I am abit confused...
> >How can we validate WYSIWYG ? addional sh ( ip route, access-lists, ... ) ?
>
> If you are asking whether there is a way, using IOS alone to confirm
> what you typed in configuration mode, it doesn't exist. The only way
> to do that is to create the file in an editor, validate it there, and
> transfer that file to the router.
>
> >So would you agreed that for the sake of RS lab, whatever that
> >'supposed' to be display on the output of sh run would be sufficient
> >to verify our typing commands ?
>
> Under lab constraints, it's probably the only practical way to do it.
> In the real world, I usually write my configurations with an editor.
> Sometimes I paste them to a telnet window, and other times they are
> file uploads from Telnet or possibly more involved scripts (e.g.,
> expect).
>
> >Would some rel. of IOS accept the commands, record it but ... do nothing ?
>
> No. The configuration editor parses the commands in real time.

> Depending on the command and whether it can be partially parsed as
> it's typed, the full line may never actually enter a buffer beyond
> that of the editor.
>
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