Re: use telnet to router with expect

by RMGir (Prior)

on Mar 14, 2014 at 13:18 UTC ( #1078327=note: print w/replies, xml )

Need Help??

"Does not run" meaning the spawn fails? Or at a later step? You might want to add an

   or die "Expect spawn failed, error $!";
[download]

to the end of your spawn command - that might tell you WHY it's failing...

I assume 000.000.000.000 isn't the IP address you're actually using - but if it is, that would explain the failure :)

Mike

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Re^2: use telnet to router with expect by fionbarr (Friar) on Mar 14, 2014 at 13:52 UTC
thanks Mike...everything works except the 'show inventory' command. The login succeeds and I see the router prompt. At that point, the script says: 'print $command "show inventory"' and the command does not execute.	[reply]
Re^3: use telnet to router with expect by RMGir (Prior) on Mar 14, 2014 at 15:05 UTC
Interesting... I'd download a copy of wireshark (a.k.a. tcpdump) and look at what goes over the wire when you do the command interactively with telnet - perhaps there's a \r sent somewhere you're using a \n, for example. Mike	[reply]
Re^3: use telnet to router with expect by RMGir (Prior) on Mar 14, 2014 at 19:16 UTC
Another possibility - maybe "hard_close" is closing the command before the server can respond? What happens if you switch that to "soft_close", or even expect something you'd see at the end of the inventory before closing? Mike	[reply]

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