Can't Telnet to Cisco equipment - WeOnlyDo Discussion board

Can't Telnet to Cisco equipment (wodSSH / wodSSH.NET)

by rpissm, Tuesday, February 05, 2008, 19:54 (5923 days ago)

Hello everyone,

I'm trying to build a simple script in VB Script that will log in to Telnet-enabled Cisco routers and switches. Here is my script:
---------------

Set wodssh1 = WScript.CreateObject( WeOnlyDo.wodSSHCom.1 )

wodSSH1.Port = 23
wodSSH1.Timeout = 10
wodSSH1.Protocol = 1 'Telnet
wodSSH1.Blocking = 1 'True
wodSSH1.HostName = IP
wodSSH1.Login = USER
wodSSH1.Password = PASS

wodSSH1.connect

wodssh1.execute show ver & vbcrlf, --More--

wscript.echo(wodssh1.receive)

wodssh1.disconnect
-----------------

The problem is, the script hangs at the wodssh1.receive call. When I capture packets, I see that the raw Telnet data (user, pass, and command) is being sent, but nothing ever gets returned to my script to echo. It just waits. Also, when I modify my script to use the PEEK method, nothing ever gets returned.

Help!

Thanks,

Johnny [:sad:]

Re: Can't Telnet to Cisco equipment

by woddrazen, Tuesday, February 05, 2008, 20:05 (5923 days ago) @ rpissm

Hi Johnny,


Please try something like this:
[code]Set wodssh1 = WScript.CreateObject( WeOnlyDo.wodSSHCom.1 )

wodSSH1.Protocol = 1 'Telnet
wodSSH1.Port = 23 ' first Protocol then Port Property
wodSSH1.Timeout = 10
wodSSH1.Blocking = 1 'True
wodSSH1.HostName = IP
wodSSH1.Login = USER
wodSSH1.Password = PASS
wodSSH1.Connect

wodSSH1.WaitFor ( regex:[$ #>] $ ) 'wait for prompt
wodSSH1.DataReady = 0
Wscript.Echo(wodSSH1.Execute( show ver + vbLf, regex:[$ #>] $ )) 'execute command and receive it in message box
wodSSH1.Disconnect[/code]
Let us know how it goes.


Regards,
Drazen

Re: Can't Telnet to Cisco equipment

by rpissm, Tuesday, February 05, 2008, 21:08 (5923 days ago) @ woddrazen

Hi Johnny,


Please try something like this:
[code]Set wodssh1 = WScript.CreateObject( WeOnlyDo.wodSSHCom.1 )

wodSSH1.Protocol = 1 'Telnet
wodSSH1.Port = 23 ' first Protocol then Port Property
wodSSH1.Timeout = 10
wodSSH1.Blocking = 1 'True
wodSSH1.HostName = IP
wodSSH1.Login = USER
wodSSH1.Password = PASS
wodSSH1.Connect

wodSSH1.WaitFor ( regex:[$ #>] $ ) 'wait for prompt
wodSSH1.DataReady = 0
Wscript.Echo(wodSSH1.Execute( show ver + vbLf, regex:[$ #>] $ )) 'execute command and receive it in message box
wodSSH1.Disconnect[/code]
Let us know how it goes.


Regards,
Drazen

Hello again,

I tried your code and it worked with a little tweaking of the regexes. Thanks. However, I'm encountering the dreaded --More-- Cisco prompt when I run the command. I was wondering how to use the Peek method, since I could write a loop that looks for the --More-- prompt and deal with it accordingly, since I don't know how many times I'll get the --More-- prompt when I run a command. It might be once, or it might be twenty times. I don't have the access priveleges to do the term 0 command.

I've tried Peek ing at the buffer while the script is running, but it never returns any data.

Any ideas?

Thanks,

Johnny.

Re: Cant Telnet to Cisco equipment

by woddrazen, Tuesday, February 05, 2008, 23:25 (5923 days ago) @ rpissm

Johnny,


I think this should work:

[code]
...
wodSSH1.StripANSI = True
wodSSH1.Connect

Dim a,b,wodSSH1

wodSSH1.WaitFor ( regex:[$ #>] $ )
wodSSH1.DataReady = 0
wodSSH1.Send ls -al | more + vbLf
b = CStr(wodSSH1.WaitFor( --More-- ))

On Error Resume Next
wodSSH1.Timeout = 10
Do
wodSSH1.Send ( + vbLf)
a = CStr(wodSSH1.WaitFor( --More-- ))

If Err.Number <> 0 Then
a =
End If
b = b + a
Loop Until Len(a) = 0
b = b + wodSSH1.Receive 'receive rest
Wscript.Echo(b)
[/code]

Let us know how it goes.


Drazen

Re: Cant Telnet to Cisco equipment

by rpissm, Wednesday, February 06, 2008, 19:35 (5923 days ago) @ woddrazen

Hello again,

YAHOOOOOOOOOOOOOOOOOOOOOOOOOO! IT WORKED!!!!!!!!!!!!!!!!!!!!

Here's the entire script, which will be of use to many of us who are trying to Telnet to Cisco equipment:

----------------
Set wodssh1 = WScript.CreateObject( WeOnlyDo.wodSSHCom.1 )

wodSSH1.Protocol = 1 'Telnet
wodSSH1.Port = 23 ' first Protocol then Port Property
wodSSH1.Timeout = 10
wodSSH1.Blocking = 1 'True
wodSSH1.HostName = HOST
wodSSH1.Login = USERID
wodSSH1.Password = PASSWORD

wodSSH1.StripANSI = True
wodSSH1.Connect

Dim a,b,wodSSH1

wodSSH1.WaitFor ( regex:[$ #>]$ )
wodSSH1.DataReady = 0
wodSSH1.Send show interface + vbLf ' Cisco command goes here

b = CStr(wodSSH1.WaitFor( --More-- ))

On Error Resume Next
wodSSH1.Timeout = 10
Do
wodSSH1.Send ( )
a = CStr(wodSSH1.WaitFor( --More-- ))

If Err.Number <> 0 Then
a =
End If

b = b + a
Loop Until Len(a) = 0
b = b + wodSSH1.Receive 'receive rest

wodssh1.send exit & vblf
Wscript.Echo( b )

----------------

Thank you again for your speedy assistance!

Johnny
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