Cisco Systems Killed my 2600 Router - Help!?

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Subject Author Date
Killed my 2600 Router - Help!? Rob 11-09-08
Posted by Rob on November 9, 2008, 7:03 pm
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Im a newbie trying to get some home lab experience on a 2651 that was
given me. I have screwed it up pretty royally and I'm looking for a
bit of help, hoping you can provide some.

I wish I could show you, by pasting a copy of the telnet session but
the router will no longer even boot to rommon>. I of course tried to
upgrade the IOS without backing up the old one. (I know)

I get a couple of strange characters that I've never seen before and a
blinking cursor, I can no longer type or hit return. The characters
are pasted below but they dont show up the same as they do on the
hyperterm screen.

=F0p=F8=F0p=F8=E8d=F8

Ever hear of such a thing? I have tried the xmodem feature but with
no luck.

Posted by Trendkill on November 9, 2008, 7:48 pm
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> Im a newbie trying to get some home lab experience on a 2651 that was
> given me. =A0I have screwed it up pretty royally and I'm looking for a
> bit of help, hoping you can provide some.
>
> I wish I could show you, by pasting a copy of the telnet session but
> the router will no longer even boot to rommon>. =A0I of course tried to
> upgrade the IOS without backing up the old one. (I know)
>
> I get a couple of strange characters that I've never seen before and a
> blinking cursor, =A0I can no longer type or hit return. =A0The characters
> are pasted below but they dont show up the same as they do on the
> hyperterm screen.
>
> =F0p=F8=F0p=F8=E8d=F8
>
> Ever hear of such a thing? =A0I have tried the xmodem feature but with
> no luck.

Have you checked the factory settings on the console connection and
ensured your serial is setup right? This often happens when there is
a mismatch of some kind, of course it could also mean a lot of other
things, but that is the first thing I would check.

Posted by bod43 on November 9, 2008, 8:08 pm
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> Im a newbie trying to get some home lab experience on a 2651 that was
> given me. =A0I have screwed it up pretty royally and I'm looking for a
> bit of help, hoping you can provide some.
>
> I wish I could show you, by pasting a copy of the telnet session but
> the router will no longer even boot to rommon>. =A0I of course tried to
> upgrade the IOS without backing up the old one. (I know)
>
> I get a couple of strange characters that I've never seen before and a
> blinking cursor, =A0I can no longer type or hit return. =A0The characters
> are pasted below but they dont show up the same as they do on the
> hyperterm screen.
>
> =F0p=F8=F0p=F8=E8d=F8
>
> Ever hear of such a thing? =A0I have tried the xmodem feature but with
> no luck.

The only thing that this can be, other than broken hardware, is
that you terminal (PC) is set to a different bit rate than the router.
Default is 9600, 1 stop bit, no parity. (no handshaking too).

best thing is to try the default and if no change
try some other settings. Would not take too long to try
all possibilities.



Posted by Rob on November 10, 2008, 11:44 am
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> The only thing that this can be, other than broken hardware, is
> that you terminal (PC) is set to a different bit rate than the router.
> Default is 9600, 1 stop bit, no parity. (no handshaking too).
>
> best thing is to try the default and if no change
> try some other settings. Would not take too long to try
> all possibilities.- Hide quoted text -
>
> - Show quoted text -

It's not broken hardware per se. I have been in the interface many
times prior to my mistake in the config. It was a direct result of
what I did.
I was in ROMMON>, which tells you the bit rate and such on the cable
is good, and proceeded to do a confreg something to the affect of
(0x0125, I dont remember off the top of my head, this is just an
example). This was done as a method to allow the device to boot
directly to the rommon without trying to read the "boot to xx.x.bin"
command that was loaded into the startup config but was erroring
out.

Posted by Sam Wilson on November 10, 2008, 12:41 pm
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In article

> > The only thing that this can be, other than broken hardware, is
> > that you terminal (PC) is set to a different bit rate than the router.
> > Default is 9600, 1 stop bit, no parity. (no handshaking too).
> >
> > best thing is to try the default and if no change
> > try some other settings. Would not take too long to try
> > all possibilities.- Hide quoted text -
> >
> > - Show quoted text -
>
> It's not broken hardware per se. I have been in the interface many
> times prior to my mistake in the config. It was a direct result of
> what I did.
> I was in ROMMON>, which tells you the bit rate and such on the cable
> is good, and proceeded to do a confreg something to the affect of
> (0x0125, I dont remember off the top of my head, this is just an
> example). This was done as a method to allow the device to boot
> directly to the rommon without trying to read the "boot to xx.x.bin"
> command that was loaded into the startup config but was erroring
> out.

OK, then you changed the terminal speed. Try different speeds in your
terminal emulation software until you find one that matches. The table
at [1] below shows the range of speeds supported. You may also have to
play with the parity settings, though the example you quoted looks more
like a speed mismatch than a parity mismatch.

Sam

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