Problem with reverse telnet with 2511

[steff006]

Here is the config on the access server:

!

!

!

!

clock timezone EST -5

clock summer-time EDT recurring

ip subnet-zero

no ip routing

!

!

!

!

interface Ethernet0

ip address 10.38.2.7 255.255.255.0

no ip route-cache

no ip mroute-cache

!

interface Serial0

no ip address

no ip route-cache

no ip mroute-cache

shutdown

no fair-queue

!

ip default-gateway 10.38.2.1

ip classless

ip http server

!

!

line con 0

password xxx

login

line 1 16

exec-timeout 0 0

transport input all

transport output none

line aux 0

line vty 0 4

password xxx

login

I have a 3550 connected to line 1 on the AC and I can reverse telnet to it the first time. I get out and then disconnect the session. I try the reverse telnet again and then I get this:

ts#telnet 10.38.2.7 2001

Trying 10.38.2.7, 2001 ...

% Connection refused by remote host

What could be causing this problem?

[steff006]

Here is the show line and show line 1 output:

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

0 CTY - - - - - 0 0 0/0 -

* 1 TTY 9600/9600 - - - - - 0 1 133/398 -

* 2 TTY 9600/9600 - - - - - 0 0 0/0 -

* 3 TTY 9600/9600 - - - - - 6 0 0/0 -

* 4 TTY 9600/9600 - - - - - 2 0 0/0 -

* 5 TTY 9600/9600 - - - - - 2 1 0/0 -

6 TTY 9600/9600 - - - - - 0 0 0/0 -

7 TTY 9600/9600 - - - - - 0 0 0/0 -

8 TTY 9600/9600 - - - - - 0 0 0/0 -

9 TTY 9600/9600 - - - - - 0 0 0/0 -

10 TTY 9600/9600 - - - - - 0 0 0/0 -

11 TTY 9600/9600 - - - - - 0 0 0/0 -

12 TTY 9600/9600 - - - - - 0 0 0/0 -

13 TTY 9600/9600 - - - - - 0 0 0/0 -

14 TTY 9600/9600 - - - - - 0 0 0/0 -

15 TTY 9600/9600 - - - - - 0 0 0/0 -

16 TTY 9600/9600 - - - - - 0 0 0/0 -

ts#sh line 1

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

* 1 TTY 9600/9600 - - - - - 0 1 136/405 -

Line 1, Location: "", Type: ""

Length: 24 lines, Width: 80 columns

Baud rate (TX/RX) is 9600/9600, no parity, 2 stopbits, 8 databits

Status: Ready, Active

Capabilities: none

Modem state: Ready

Modem hardware state: CTS DSR DTR RTS

Special Chars: Escape Hold Stop Start Disconnect Activation

^^x none - - none

Timeouts: Idle EXEC Idle Session Modem Answer Session Dispatch

never never none not set

Idle Session Disconnect Warning

never

Login-sequence User Response

00:00:30

Autoselect Initial Wait

not set

Modem type is unknown.

Session limit is not set.

Time since activation: 00:48:21

Editing is enabled.

History is enabled, history size is 10.

DNS resolution in show commands is enabled

Full user help is disabled

Allowed input transports are pad v120 telnet rlogin udptn.

Allowed output transports are none.

Preferred transport is telnet.

No output characters are padded

No special data dispatching characters

[Richard Burts · Accepted solution]

I believe that your problem is caused because the device believes that it still has a session running on its console and will not accept another incoming session. In my experience it works much better if you disable exec on the async lines which will be used for reverse telnet. So I suggest that you configure no exec on the async lines. Try it and let us know if it improves your problem.

HTH

Rick

[steff006]

I get a huge amount of overruns. What would be causing that? Also I tried the no exec and still the same thing.

[steff006]

Still is believing that line 1 is connected. Is there any way to flush the connections besides using disconnect?

[steff006]

Found the problem, I just wasn't disconnecting the connections properly. Thanks for all the help!!!

[steff006]

Make sure to disconnect the session properly by using disconnect session # and if the line still shows it's being used, use the command clear line # where the number is the line you want to disconnect.

[Thomas Koons]

You need to clear line 1