From: Brian Hescock (bhescock@xxxxxxxxx)
Date: Tue Jul 18 2000 - 14:50:02 GMT-3
Just a quick addition to Brian's notes below (excellent, by the
way). Should you ever find out about a hidden command but want to know
more about it and what the output means, don't open a case with the Cisco
TAC because they most likely won't know either, nor could they tell
you. The reason is most of the undocumented commands really are
undocumented, even within Cisco. The only way to find out most of the
undocumented commands is to view the source code, which is the land of the
Cisco Development Engineers. The undocumented commands are for their use
and, since they wrote the code, they know what all of them are (they
aren't listed, I've asked). But some undocumented commands do
eventually become regular IOS commands, such as "show ip eigrp events",
which I believe was undocumented several flavors of IOS versions ago.
To quote a famous TV personality: "And now you know the rest of the
story..." ;-)
Brian
On Tue, 18 Jul 2000, John Meggers wrote:
> Just because the official documenation is the foundation for study doesn't
> mean that there aren't any undocumented commands that would help you get
> through the lab.
>
> John C. Meggers, CCNP, CCDP, MCSE
> Sprint Enterprise Network Services
> Fairfax, Virginia
> Pager 1-888-314-7008
> jcmegger@sprintparanet.com
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf
Of
> > Brian Edwards
> > Sent: Tuesday, July 18, 2000 12:58 PM
> > To: 'Johnson, Charles'; ccielab@groupstudy.com
> > Subject: RE: Undocumented commands
> >
> >
> > There are plenty of undocumented/hidden IOS commands, but you are not
> > expected to know these for the CCIE lab. I know there is a way to vty to
> > processor on VIP cards on a 7500, which is completely undocumented and
> > hidden (doesn't show up with "?" and no command completion with
> > tab). These
> > commands are for system troubleshooting and are known by Cisco TAC and
> > engineering. Also some are commands that can really screw things up if you
> > don't know what your doing, or new features that they want to field test
> > with special customers, but don't want available for use by
> > everyone until a
> > later release.
> >
> > For the CCIE lab the official documentation is what you should base your
> > studying on.
> >
> > > >
> > > > All,
> > > >
> > > > Is there such thing as undocumented commands?
> > > > I have a full set of Cisco Documentation and was wondering
> > > if these books
> > > > actually contain all the commands I need to know.
> > > > I think it is reasonable question to ask. (well, I think)
> > > > And, of course, please respond within the NDA.
> > > > TIA.
> > > >
> > > > Richard
> > > > P.S. they are IOS 12.0
> > > >
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