RE: Reverse telnet question

From: Michael Stout (michaelgstout@hotmail.com)
Date: Thu Sep 28 2006 - 02:39:45 ART


!

My term server config

interface Loopback999

description used for reverse telnet

ip address 220.220.220.220 255.255.255.0

!

ip host cat2 2012 220.220.220.220

!

line 1 16

no exec

transport input telnet

line aux 0

password ipexpert

login

transport input all

!

end

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

an example using aux port to con port connection

this is the aux port side.

ip host r16 2005 1.1.1.1 < -- the 2005 is the reverse telnet port you'll
use 2129

!

interface Loopback1

description used for reverse telnet

ip address 1.1.1.1 255.255.255.255

!

line aux 0

no exec <-- prevents the aux port from transmitting garbage out

transport input telnet < enable reverse telnet over this port

transport output telnet <-- i don't think this is required

flowcontrol hardware <-- allows this port to control the flow - it pushes
the bits

This output shows that my aux port is using line 5

r15#sho line

Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int

* 0 CTY - - - - - 0 1 0/0 -

5 AUX 9600/9600 - - - - - 0 0 0/0 -

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

  From: "Schulz, Dave" <DSchulz@dpsciences.com>
  Reply-To: "Schulz, Dave" <DSchulz@dpsciences.com>
  To: <ccielab@groupstudy.com>
  Subject: Reverse telnet question
  Date: Thu, 28 Sep 2006 00:43:03 -0400
  I am unable to get the following reverse telnet to work .....

  R1 has the following set up on the vty....

  !
  !
  line con 0
  line aux 0
  line vty 0 4
    privilege level 15
    password cisco
    login
    rotary 1
  !
  R1(config)#do sh line
      Tty Typ Tx/Rx A Modem Roty AccO AccI Uses
  Noise Overruns
  Int
  * 0 CTY - - - - - 4 407
  0/0
  -
      129 AUX 9600/9600 - - - - - 0 0
  0/0
  -
      130 VTY - - 1 - - 1 0
  0/0
  -
      131 VTY - - 1 - - 0 0
  0/0
  -
      132 VTY - - 1 - - 0 0
  0/0
  -
      133 VTY - - 1 - - 0 0
  0/0
  -
      134 VTY - - 1 - - 0 0
  0/0
  -

  On R3.... I am trying to telnet to the first vty port (or any of
  them).
  This is the response:

  R3#
  R3#telnet 172.16.1.1 2130
  Trying 172.16.1.1, 2130 ...
  % Connection refused by remote host

  R3#

  However, telnetting in to the unit without selecting the port works
  fine. Any thoughts?

  Dave Schulz,

  Email: dschulz@dpsciences.com <mailto:dschulz@dpsciences.com >

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