Re: [Expectperl-discuss] Nested telnet sessions using Expect.pm module

[Austin S. <te...@of...>]

On Wed, Oct 08, 2003 at 05:17:47PM +1300, Andrew Cutler wrote:
> Hi,
> 
> What about if you want the last object to be a separate expect instance?
> I have a situation where I need to:
> 

	You could if you wanted turn/copy it into a new object, but that
probably won't give you the functionality you're looking for.

> telnet to a cisco router and configure an interface to provide
> connectivity to another device.
> 
> telnet from the router to the device and login.
> interact.
> logout from the device and fallback to the cisco, 
> 
> deconfigure the interface and shut it down.
> logoff.
> 
> My problem is the moron users who won't read the initial text that tells
> them to hit control X to exit (interact escape sequence). Most of them
> are logging out cleanly from the device and if this was a separate
> expect object, control would return to the program and I could clean up
> the router.

	So don't call interact. read from the user and write to the router,
and vice versa.

> 
> The man page says the escape sequence will not work with multiple
> characters so I can't use "exit" etc.

	This is true, see above comment. Also you can still look for strings
like 'connection closed by foreign host', etc.

> 
> Can I expect from an instance while it's in interact mode? I could look
> for the logout command or watch for when the prompt changes back to the
> original router.
> 

	Yeah, that's what you do. You don't need to do interact to accomplish
this. Also, you can use the '-i' flag to expect() to wait for input from both
the device and the user.
	Well, that's how I would do it anyway.


	Austin