Expect/telnet/testing tacacs on a cisco Post: 302463916

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Top Forums Shell Programming and Scripting Expect/telnet/testing tacacs on a cisco Post 302463916 by popeye on Monday 18th of October 2010 08:15:41 PM

10-18-2010

Registered User

Expect/telnet/testing tacacs on a cisco

At times I find the need to test that the tacacs port 49 is open.
The code below works but is painfully slow because I have to wait on the timeouts.

Examples of possible responds

router1#telnet 10.11.20.14 49
Trying 206.112.204.140, 49 ... Open

[Connection to 206.112.204.140 closed by foreign host]

route1#telnet 10.11.19.14 49
Trying 206.112.196.84, 49 ...
% Connection timed out; remote host not responding
End Examples

I would like to capture and act on the "Trying" lines

... Open = tacacs port good
... = tacacs port bad
end remote telent
end local telnet

But I dont know how to tell expect how to grab those responses from the router. Help would be much appreciated.

The entire code is given below.

Code:

while { [gets $ifil host] >=0 } {
#
set timeout 600
spawn telnet $host
expect ":"
send "myusername\n"
expect ":"
send "mypassword\n"
expect ">"
send "en\n"
expect ":"
send "mypassword2\n"
expect "#"
sleep 3
send "telnet 10.11.19.14 49\n"
expect {
   {Connection to}           {
                                    puts "$host tacacs ok"
                                    }
   {Connection timed out} {
                                    puts "$host tacacs nok"
                                    }
 }

popeye

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LEARN ABOUT DEBIAN

rxtelnet

RXTELNET(1)						    BSD General Commands Manual 					       RXTELNET(1)

NAME

     rxtelnet -- start a telnet and forward X-connections.

SYNOPSIS

     rxtelnet [-l username] [-k] [-t telnet_args] [-x xterm_args] [-K kx_args] [-w term_emulator] [-b telnet_program] [-n] [-v] host [port]

DESCRIPTION

     The rxtelnet program starts an xterm window with a telnet to host host.  From this window you will also be able to run X clients that will be
     able to connect securely to your X server. If port is given, that port will be used instead of the default.

     If setting up the X forwarding failes, rxtelnet will still telnet in to the remote host, but without X forwarding.

     The supported options are:

     -l      Log in on the remote host as user username.

     -k      Disables keep-alives.

     -t      Send telnet_args as arguments to telnet.

     -x      Send xterm_args as arguments to xterm.

     -X      Send kx_args as arguments to kx.

     -w      Use term_emulator instead of xterm.

     -b      Use telnet_program instead of telnet.

     -n      Do not start any terminal emulator.

     -v      Be verbose.

EXAMPLE

     To login from host foo (where your display is) to host bar, you might do the following.

     1.   On foo: rxtelnet bar

     2.   You will get a new window with a telnet to bar.  In this window you will be able to start X clients.

SEE ALSO

     kx(1), rxterm(1), telnet(1), tenletxr(1), kxd(8)

KTH_KRB 							   March 7, 2004							   KTH_KRB