871w console port not working.

Cristian Nilsson · ‎01-09-2014

Hello,

I got an 871w from ebay and im starting to wonder if the console port is defect - its a console/aux port (never seen before).

I have tried two different cables - both works fine on a 3560.

Tried all of these baud ratings

Standard baud rates supported by most serial ports:
	110	300
	600	1200
	2400	4800
	9600	14400
	19200	28800
	38400	56000
	57600	115200

Standard baud rates supported by some serial ports:
	128000	153600
	230400	256000
	460800	921600

Data bits 8

Stop bits 1

Parity none

Flow control none

There is simply no response from this unit.

I did a reset (the little push button on the beack of it).

And i can acess the router using telnet as it seems to have a default dhcp server enabled in the 10.10.10.0 network.

Here is the configuiration for con and aux.

line con 0

no modem enable

line aux 0

I would likeO to get the console working as i want to get an newer IS on the unit.

Anyone had this problem before? May it be that the console/aux port is actualy defect?

Help much apreciated

//Cristian

amsodhi · ‎01-10-2014

Hey Cristian,

Please make one small change in the configuration.

conf t

line console 0

login local

and

config-register 0x2102

do wr

reload

this should solve your problem

Please dont forget to rate this solution.

-Amant

Cristian Nilsson · ‎01-10-2014

Hello,

Thanks for your answer, however this did not help.

I set the baud to 9600 (http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a008022493f.shtml) even tried all the others again but no response.

I am starting to think that $100 on ebay was wasted -ish.

I can still access using telnet as there is the default DHCP.

If you have any other sugestions i apreciate it.

//Cristian

amsodhi · ‎01-10-2014

Did you try to change the speed also under line console 0?

line con 0

login local

speed 9600

If it doesnt help, i am sure there is something wrong with the port :-(

-Amant

Richard Burts · ‎01-11-2014

If the poster does have telnet access then it might be helpful if he would post the output of show line 0.

HTH

Rick

HTH

Rick

Cristian Nilsson · ‎01-11-2014

Hello, here is the output for line 0 and line con 0.

I did notice the "2 stopbits" and gave that another try with all baud ratings but still no conectivity/respons from SERIAL connection.

JamesBond#show line 0

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

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

Line 0, Location: "", Type: ""

Length: 24 lines, Width: 80 columns

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

Status: Ready

Capabilities: none

Modem state: Ready

Special Chars: Escape Hold Stop Start Disconnect Activation

^^x none - - none

Timeouts: Idle EXEC Idle Session Modem Answer Session Dispatch

00:10:00 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: never

Editing is enabled.

History is enabled, history size is 20.

DNS resolution in show commands is enabled

Full user help is disabled

Allowed input transports are none.

Allowed output transports are telnet ssh.

Preferred transport is telnet.

No output characters are padded

No special data dispatching characters

JamesBond#show line con 0

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

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

Line 0, Location: "", Type: ""

Length: 24 lines, Width: 80 columns

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

Status: Ready

Capabilities: none

Modem state: Ready

Special Chars: Escape Hold Stop Start Disconnect Activation

^^x none - - none

Timeouts: Idle EXEC Idle Session Modem Answer Session Dispatch

00:10:00 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: never

Editing is enabled.

History is enabled, history size is 20.

DNS resolution in show commands is enabled

Full user help is disabled

Allowed input transports are none.

Allowed output transports are telnet ssh.

Preferred transport is telnet.

No output characters are padded

No special data dispatching characters

//Cristian

Richard Burts · ‎01-11-2014

Cristian

Thank you for posting the information that I requested. The console line does appear to be pretty normal in this output. I have an additional suggestion that you might try. Connect your PC to the console port. Then through a telnet session to the router use the send command to try to send a message to the console port. It the message output does show up on the console session then it demonstrates some level of communication. If no output shows up on the console then it suggests that perhaps there is a hardware fault on the console.

HTH

Rick

HTH

Rick

Cristian Nilsson · ‎01-13-2014

Hello,

Im not sure what you mean by that. How do i telnet to a console-port?

I tried commands from command-promt like "telnet com2" but obv it doesnt take it as telnet is tcp/ip.

I tried plugging my ethernetcable into console port aswell but nada response (telnet 192.168.0.1).

//Cristian

Richard Burts · ‎01-13-2014

Cristian

I am sorry if my request was not clear. I am not suggesting telnet to the console port. I am suggesting using 2 connections at the same time - one connection is your PC to the console port using your terminal emulator and the second connection is your PC to the router using telnet over its Ethernet interface.

Once you have both connections established then I am suggesting entering a command in your telnet/Ethernet session that will try to send a message to your console connection.

HTH

Rick

HTH

Rick