[c-nsp] Cisco 2600 with async NM-32 sending wrong characters

Youssef Bengelloun-Zahr youssef at 720.fr
Wed Jun 2 10:24:04 EDT 2010


Hello again,

I'm suspecting a misconfiguration between the terminal lines on the console
servers and the equipments, more specifically concerning baud rates.

Here is an output of a show line on the console :

CONS3.IX1#sh line 33
   Tty Typ     Tx/Rx    A Modem  Roty AccO AccI   Uses   Noise  Overruns
Int
    33 TTY   9600/9600  -    -      -    -    -     14       0     0/0
-

Line 33, Location: "", Type: ""
Length: 24 lines, Width: 80 columns
*Baud rate (TX/RX) is 9600/9600, no parity, 1 stopbits, 8 databits*
Status: Ready
Capabilities: EXEC Suppressed
Modem state: Ready
Modem hardware state: CTS noDSR  DTR RTS
Special Chars: Escape  Hold  Stop  Start  Disconnect  Activation
                ^Cx    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: never
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 ssh.
Allowed output transports are pad v120 telnet rlogin ssh.
Preferred transport is telnet.
No output characters are padded
No special data dispatching characters


Here is an output of a show line cons0 on one of the core equipments :

LNS1.IX1#sh line console 0
   Tty Typ     Tx/Rx    A Modem  Roty AccO AccI   Uses   Noise  Overruns
Int
     0 CTY              -    -      -    -    -      0       1     0/0
-

Line 0, Location: "", Type: ""
Length: 24 lines, Width: 80 columns
*Baud rate (TX/RX) is 9600/9600, no parity, 1 stopbits, 0 databits*
Status: Ready, 0x40000
Capabilities: none
Modem state: Ready
Group codes:    0
Special Chars: Escape  Hold  Stop  Start  Disconnect  Activation
                ^Cx    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: never
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 none.
Allowed output transports are lat pad telnet rlogin mop v120 ssh nasi.
Preferred transport is none.
No output characters are padded
No special data dispatching characters


It must some problem of this kind... Something so obvious that I'm not
seeing it.

Thanks.

Y.



2010/6/2 Youssef Bengelloun-Zahr <youssef at 720.fr>

> Hello,
>
> An interesting note on the following link :
>
>
> http://www.cisco.com/en/US/tech/tk801/tk36/technologies_configuration_example09186a008014f8e7.shtml
>
>
> *Note: *If you encounter authentication failures, remember that the
> terminal server performs the first authentication (if configured), while the
> device to which you try to connect performs the second authentication (if
> configured). Verify whether AAA is configured correctly on both the terminal
> server and the connecting device.
>
>
> Seems like it's the problem I am encountering here.
>
> I'll try to dig in this direction.
>
> Any help will be appreciated.
>
> Tx.
>
> Y.
>
>
>
> 2010/6/2 Youssef Bengelloun-Zahr <youssef at 720.fr>
>
> Hello,
>>
>> Yes, it is configured on both cons1 and 2 :
>>
>>
>> line 33 64
>>  exec-timeout 0 0
>>  no exec
>>  transport input telnet
>>
>>  escape-character 3
>>  stopbits 1
>>
>>
>> Here is an output of a show line xx on the console routers :
>>
>> CONS1.IX1#sh line 33
>>    Tty Typ     Tx/Rx    A Modem  Roty AccO AccI   Uses   Noise  Overruns
>> Int
>>     33 TTY   9600/9600  -    -      -    -    -      0   10668
>> 4/10      -
>>
>> Line 33, Location: "", Type: ""
>> Length: 24 lines, Width: 80 columns
>> *Baud rate (TX/RX) is 9600/9600, no parity, 1 stopbits, 8 databits*
>> *Status: Ready*
>> *Capabilities: EXEC Suppressed*
>> Modem state: Ready
>> Modem hardware state: CTS* DSR  DTR RTS
>> Special Chars: Escape  Hold  Stop  Start  Disconnect  Activation
>>                 ^Cx    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: 00:00:01
>> 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 telnet.
>> Allowed output transports are pad v120 telnet rlogin ssh.
>> Preferred transport is telnet.
>> No output characters are padded
>> No special data dispatching characters
>>
>>
>> Y.
>>
>>
>>
>> 2010/6/2 Ian Henderson <ianh at ianh.net.au>
>>
>> On Wed, 2 Jun 2010, Youssef Bengelloun-Zahr wrote:
>>>
>>>        User-Name = *"CONS2.IX1> ### Login failed"*
>>>>
>>>
>>> Do you have 'no exec' configured under the async line stanza on CONS1 and
>>> CONS2? The config you posted is for CONS3, which does have it configured.
>>>
>>>
>>>  line 33 64
>>>>  exec-timeout 0 0
>>>>  no exec
>>>>  transport input all
>>>>  escape-character 3
>>>>  stopbits 1
>>>>
>>>
>>> Rgds,
>>>
>>>
>>> - I.
>>>
>>
>>
>>
>> --
>> Youssef BENGELLOUN-ZAHR ………………………………………………
>> Ingénieur Réseaux et Télécoms
>>
>>
>> Technopole de l'Aube  en Champagne - BP 601 - 10901 TROYES  Cedex 9
>> Agence Paris : 6, rue Charles Floquet - 92120 MONTROUGE
>> Tel                 +33 (0) 825 000 720
>> Tel. direct      +33 (0) 1 77 35 59 14
>> Tel. portable  +33 (0) 6 22 42 63 80
>> Email            ybz at 720.fr
>> ……………………………………………………………………………….....www.720.fr
>>
>>
>
>
> --
> Youssef BENGELLOUN-ZAHR ………………………………………………
> Ingénieur Réseaux et Télécoms
>
>
> Technopole de l'Aube  en Champagne - BP 601 - 10901 TROYES  Cedex 9
> Agence Paris : 6, rue Charles Floquet - 92120 MONTROUGE
> Tel                 +33 (0) 825 000 720
> Tel. direct      +33 (0) 1 77 35 59 14
> Tel. portable  +33 (0) 6 22 42 63 80
> Email            ybz at 720.fr
> ……………………………………………………………………………….....www.720.fr
>
>


-- 
Youssef BENGELLOUN-ZAHR ………………………………………………
Ingénieur Réseaux et Télécoms


Technopole de l'Aube  en Champagne - BP 601 - 10901 TROYES  Cedex 9
Agence Paris : 6, rue Charles Floquet - 92120 MONTROUGE
Tel                 +33 (0) 825 000 720
Tel. direct      +33 (0) 1 77 35 59 14
Tel. portable  +33 (0) 6 22 42 63 80
Email            ybz at 720.fr
……………………………………………………………………………….....www.720.fr


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