Re: [swinog] X.21, V.35 Cisco Interface in Master Mode

2005-09-02 Diskussionsfäden Arnold Nipper

On 02.09.2005 11:47 Fredy Kuenzler wrote


Bangerter Markus wrote:
Oh yes, it comes in every CCIE lab these days, and as you never 
know which side is DCE or DTE on the first glance, clock rate is 
always just trial and error.


To avoid trial and error, you can use show controller serial x/y. 
There you see the type of cable attached to your serial interface.


I knew there would be something to find out, but then you have to know
that clock rate should be set at the DCE end ...



Fredy, that is telecommunication basics, isn't it?




Arnold
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email: [EMAIL PROTECTED]   phone: +49 6224 9259 299
mobile: +49 172 2650958 fax: +49 6224 9259 333
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RE: [swinog] X.21, V.35 Cisco Interface in Master Mode

2005-09-02 Diskussionsfäden Bangerter Markus
Bangerter Markus wrote:
> To avoid trial and error, you can use show controller serial x/y. 
> There you see the type of cable attached to your serial interface.

>I knew there would be something to find out, but then you have to know
>that clock rate should be set at the DCE end ...

clock-rate can only be set on the dce !

Cheers, Markus
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Re: [swinog] X.21, V.35 Cisco Interface in Master Mode

2005-09-02 Diskussionsfäden Fredy Kuenzler

Bangerter Markus wrote:
Oh yes, it comes in every CCIE lab these days, and as you never 
know which side is DCE or DTE on the first glance, clock rate is 
always just trial and error.


To avoid trial and error, you can use show controller serial x/y. 
There you see the type of cable attached to your serial interface.


I knew there would be something to find out, but then you have to know
that clock rate should be set at the DCE end ...

F.
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RE: [swinog] X.21, V.35 Cisco Interface in Master Mode

2005-09-02 Diskussionsfäden Bangerter Markus
>Oh yes, it comes in every CCIE lab these days, and as you never know
>which side is DCE or DTE on the first glance, clock rate is always just
>trial and error.
>
>F.

To avoid trial and error, you can use show controller serial x/y.
There you see the type of cable attached to your serial interface.

Markus
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Re: [swinog] X.21, V.35 Cisco Interface in Master Mode

2005-09-02 Diskussionsfäden Fredy Kuenzler

Roman Hochuli wrote:

But IMO such setups are more a lab-thing than real-live stuff in
nowadays.


Oh yes, it comes in every CCIE lab these days, and as you never know
which side is DCE or DTE on the first glance, clock rate is always just
trial and error.

F.

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RE: [swinog] X.21, V.35 Cisco Interface in Master Mode

2005-09-02 Diskussionsfäden Güntensperger , Robert
Hi André

We've used this several times for customer connections at TIX.
You need on one side a DTE and on the other side a DCE cable.
As soon as the DCE cable is connected, can you set the clock rate on this I/F.
--> X.21 up to 8Mbit/s

Cheers,
Günti

> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of Andre Oppermann
> Sent: Donnerstag, 1. September 2005 19:47
> To: swinog@swinog.ch
> Subject: [swinog] X.21, V.35 Cisco Interface in Master Mode
> 
> 
> Is anyone of you running a Cisco with X.21 or V.35 interface in
> master mode (the Cisco is supplying the clocking on the line).
> Normally the modem (DCE) supplies the line clock to the Cisco.
> 
> I'm interested in (production) cases where you had to supply the
> clock from the cisco to the other side.
> 
> -- 
> Andre
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Re: [swinog] X.21, V.35 Cisco Interface in Master Mode

2005-09-01 Diskussionsfäden Roman Hochuli

Hello Andre

Yes, we had such a setup for quite a long time for connecting two 
routers back-to-back without a "leasedline" with serial-interfaces. It 
was somehow more a case of 'we have the interfaces already so why should 
be buy some new ethernetinterfaces when the cables cost not even 10% of 
the interface-price' than a 'there is no other way to do it' case tough.


But IMO such setups are more a lab-thing than real-live stuff in nowadays.

--
Kind regards,
Roman Hochuli
Operations Manager

Nexellent AG
Saegereistrasse 29
8152 Glattbrugg
Switzerland
Tel +41-44-5623040
Fax +41-44-5623041
X-NCC-RegID: ch.nexellent

  Corry's Law:
Paper is always strongest at the perforations.
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Re: [swinog] X.21, V.35 Cisco Interface in Master Mode

2005-09-01 Diskussionsfäden Arnold Nipper

On 01.09.2005 19:47 Andre Oppermann wrote


Is anyone of you running a Cisco with X.21 or V.35 interface in
master mode (the Cisco is supplying the clocking on the line).
Normally the modem (DCE) supplies the line clock to the Cisco.

I'm interested in (production) cases where you had to supply the
clock from the cisco to the other side.



I had to that 15 years ago when connecting an AGS back-to-back to a 
Datus X.25 switch.




Arnold
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Arnold Nipper, AN45
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Re: [swinog] X.21, V.35 Cisco Interface in Master Mode

2005-09-01 Diskussionsfäden Patrick . Guelat

On Thu, 1 Sep 2005, Andre Oppermann wrote:


Is anyone of you running a Cisco with X.21 or V.35 interface in
master mode (the Cisco is supplying the clocking on the line).
Normally the modem (DCE) supplies the line clock to the Cisco.

I'm interested in (production) cases where you had to supply the
clock from the cisco to the other side.


Yes we've used such back2back configurations for a long time
with V.35 and X.21. The availble clockrates depend on the type
of cisco-gear and serial-interface adapter you're using (not
all clockrates shown with a 'config-if# clockrate ?' in cli are
always possible !)

-Patrick
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