Unable de telnet

[Ayad]

Dear all,

Regards,

[Calin C.]

Hello

Did you tried to issue:

clear line xx

?

Maybe it got stuck from last time when you successful connect and got disconnected.

Let me know if this is working or give us some configuration output.

Cheers,

Calin

[Ayad]

Thank you for your prompt reply.

I have tried the clear lien command, but the same result.

I have desactivated the hardware flowcontrol and now it seems to be working but i get the tacacs authentication.

config output :

===

Line aux 0

password cisco

modem inout

transport input telnet

====

the defaut speed is 9600, databit 8 et stopbit 2.

when i try telnet loopback@ 2001 where 1 is the aux line number, i get the username/password (tacacs) to access to router.

when i enter the user name/pwd, the connection is blocked and i mast to clear the line 1 to start again.

N.B: must i use the loopback address ? is there any way to access device behind the aux port  without telnet?

Thanks for your help.

Regards,

[Ayad]

Just a specific thing for cisco 800 routers, both AUX and CONSOLE port are in the same physical RJ-45 and just one can be active at the same time.

Does someone know how to verify anf activate the AUX port?

Thanks,

[Calin C.]

Hello!

You did activate your AUX port when you configure it.

Regarding the tacacs credentials, do you have any AAA configured on router or switch?

Cheers,

Calin

[Ayad]

Thanks for your reply.

I have the AAA tacacs config in my router. when i try telnet @l0 2001 (where 1 line aux line number), i get the AAA authentication and when i enter credentials, the screen is block (i cannot do anything), i must do a clear line or reboot the router.

I use a rolled cable shipped with the router, must i change to a straight cable ?

Thanks,

[Ayad]

Dear All,

when i debug telnet trafic, i get the following lines :

*Nov  8 14:04:24 CET: Telnet1: 1 1 251 1
*Nov  8 14:04:24 CET: TCP1: Telnet sent WILL ECHO (1)
*Nov  8 14:04:24 CET: Telnet1: 2 2 251 3
*Nov  8 14:04:24 CET: TCP1: Telnet sent WILL SUPPRESS-GA (3)
*Nov  8 14:04:24 CET: Telnet1: 80000 80000 253 24
*Nov  8 14:04:24 CET: TCP1: Telnet sent DO TTY-TYPE (24)
*Nov  8 14:04:24 CET: Telnet1: 10000000 10000000 253 31
*Nov  8 14:04:24 CET: TCP1: Telnet sent DO WINDOW-SIZE (31)
*Nov  8 14:04:24 CET: Telnet7: Sent SB NAWS 80 43
*Nov  8 14:04:24 CET: TCP1: Telnet received DO ECHO (1)
*Nov  8 14:04:24 CET: TCP1: Telnet received DO SUPPRESS-GA (3)
*Nov  8 14:04:24 CET: TCP1: Telnet received WILL TTY-TYPE (24)
*Nov  8 14:04:24 CET: Telnet1: Sent SB 24 1
*Nov  8 14:04:24 CET: TCP1: Telnet received WILL WINDOW-SIZE (31)
*Nov  8 14:04:24 CET: Telnet1: recv SB NAWS 80 43
*Nov  8 14:04:24 CET: Telnet7: recv SB 24 1
*Nov  8 14:04:24 CET: Telnet7: Sent SB 24 0 ANSI
*Nov  8 14:04:24 CET: Telnet1: recv SB 24 0 ANSI

the conenction using telnet @ l0 2001 is blocked just after AAA authentication.

Please if someone has an idea to go setup the reverse telnet.

Thanks,