Thanks!
I'll give it a try.
Jon
Paul Werner <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Yes, I have experienced this several times. It is the dreaded
> Catalyst switch who thinks it is talking to a modem :-) Here
> are my recommended fixes in this order:
>
> 1. Get a known good black console cable. Get several. Try
> each one out and see if any will get the console to come up
> other than ATQ commands.
>
> 2. Change out your DB-9 to RJ-45 converters with others that
> are known/good. See if that works.
>
> 3. Finally, and lastly, change out to other COM ports/other PC
> COM ports to see if that will help. In the three times I had
> this scenario, only once did I have to go to step 3.
> Obviously, it goes without saying that you need to ensure you
> have the correct COM port settings(9600,8,N,1,) particularly
> with flow control turned *off*.
>
> 4. If all else fails, upgrade the firmware to something
> older/newer (experiment here). Yes, I know it is fun sucking a
> 1MB image through a 9600bps line, but that's what a cup of
> coffee is for 8-)
>
> 5. If this one is so old that it has one of those DB-9 console
> connectors on the back of the switch (vice the newer RJ-45),
> you may need to order Cisco's OEM console cable for that box,
> or you will need to build a null modem cable as specced out
> here (watch wrap):
>
> http://www.cisco.com/univercd/cc/td/doc/product/lan/28201900/192
> 8v5x/icg5x/csspec.htm#41267
>
> You are on the right track if you can access the diagnostic
> console. Lastly, strongly resist the temptation to throw the
> switch against the wall. It may be needed for an RMA:-)
>
> Best of luck,
>
> Paul Werner
>
>
> > Date: Sun, 7 Jan 2001 17:45:17 -0500
> > From: "Jon O'Nan" <[EMAIL PROTECTED]>
> > Subject: ATQ0H0
> >
> > I've been working with an older Catalyst 1900 switch
> (firmware ver 5.37)
> > We
> > can't get any management console output. We are able to bring
> up the
> > diagnostic console by holding in the mode button on the front
> of the
> > switch
> > while turning on the power. After upgrading the firmware via
> xmodem, the
> > switch will POST and then leave us with a blsnk screen except
> for modem
> > strings ATQ0H0. Anyone ever experienced the same issue?
>
>
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