From: Fred Ingham (fningham@xxxxxxxxxxxxxxxx)
Date: Wed May 30 2001 - 13:23:48 GMT-3
Comments in line.
"Choi, Howard CW" wrote:
>
> Hi Group,
>
> The following questions are draw from CCBOOTCAMP troubleshooting part.
>
> 1. Suppose the console speed is changed by "speed xxx" command to
> something apart from the default 9600 bps. How can you recover ? Apart from
> trying all possible values (300, 1200, 2400,...), what other ways are there
> ?
>> First, try the aux port if it is enabled. If not, telnet to the router if t
elnet is enabled. From either of these, change the console speed back to the d
efault. If neither of these methods are available, try the three speeds, 1200,
2400, and 4800 (there are only four speeds on a 2500). For a 2600 or 3600 ser
ies there are eight speeds possible so you would have to try seven. Disconnect
and reconnect Hyperterminal for each speed change.
> 2. Suppose the command "exec-timeout 0 1" is applied to the local
> console so that you do not have enough time to type in the appropriate
> commands to recover. What could you do ? One way I can think of is to do
> boot from rommon> and boot with a clean running-config. But as soon as you
> copy the startup-config to the running-config, the command "exec-timeout 0
> 1" will function again.
> > There are five methods, at least, to get by this common example. The quick
est is the script in another reply, but this requires that the passwords are se
t and that they haven't been changed. Paste the script into hyperterminal to r
estore the default.
The other four methods - connect to the aux port and change back to
default,
- telnet into the router and restore default, - type fast using the
enter key or up arrow to keep the sequence going, this is the same as
the script only done manually, - and lastly - use password recovery
techniques to view and copy the startup config to notepad, change
command or delete, and then paste the entire config back into
hyperterm. This last method will work if the exec-ti 0 1 command is
combined with password changes. Before pasting the config back in,
check for other changes, and also change the configuration register back
to 0x2102. No need to reboot after recovery.
HTH, Fred
>
> Howard Choi
> CCNP, CCDP
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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