Re: Clock Rate

:)))))

DTE , DCE are devices (routers in your case) each having defined purpose .

But you need to plug in right cable to right device .
Physically a serial WIC / HWIC card plugged in a router can assume a role of
a DTE as well as DCE.
It depends on the cable that is connected to serial interface that the end
takes a role of DCE or a DTE .

Each serial cable type (RS 232 , V.35 , 449 , 530 etc etc) have a DTE end
and a DCE end ; so depending on what is plugged in where .. the end is
defined .

Hope some clarity this time ,

Gaurav Madan
CCIE .

On Sun, Jul 17, 2011 at 7:05 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar>wrote:

> This is getting so distant from reality ... as a lab can get.
> What exactly is DCE and DTE ? Is a router a DTE or a DCE ?
> Is the cable a DCE or a DTE ? :)
> -Carlos
>
> Radioactive Frog @ 17/07/2011 01:57 -0300 dixit:
>
> Great explaination Gaurav.
>> Just would add on top of gaurav's statement - You need a very SPECIFIC
>> cables that has one end DTE and other end DCE to get it working.
>>
>> On Sun, Jul 17, 2011 at 2:12 AM, GAURAV MADAN <gauravmadan1177_at_gmail.com>
>> **wrote:
>>
>> Things to consider here are :
>>>
>>> 1) Clock rate is applicable to DCE devices and not on DTE devices
>>> 2) Devices can be categorized as DCE or DTE depending the cable connected
>>> to
>>> serial interface.
>>> 3) Generally DCE devices are FR switch etc.
>>> 4) If you are configuring the back to back connection ; configure "clock
>>> rate <> " CLI on DCE end only
>>> 5) I think latest IOS on serial HWIC will take clock rate command only on
>>> DCE end and not on DTE end . However older IOS used to take it on any
>>> device
>>> 6) Any rate is good ... as long as it is working .. default 9600 bps
>>> should
>>> be OK .
>>>
>>>
>>> HTH
>>> Gaurav Madan
>>> CCIE
>>>
>>> On Sat, Jul 16, 2011 at 9:36 PM, <jhnrose401_at_gmail.com> wrote:
>>>
>>> Dear
>>>>
>>>> I want to know what clock rate i will use when i am in the lab or when i
>>>>
>>> am
>>>
>>>> using
>>>> dynamips what is the method or way i will configure the correct clock
>>>> rate to
>>>> my routers
>>>>
>>>> Eg
>>>>
>>>> For DCE i ll configure the clock rate not for DTE correct
>>>>
>>>> if both devices are DCE i will define CR on both or in a single devices.
>>>>
>>>> R1 --ser1/0 -------------------s1/0 R2
>>>>
>>>> I am facing problem my ospf adj flap after few minutes is CR are the
>>>>
>>> reason
>>>
>>>> R1 = s1/0 ip add 10.1.1.1/24 and loop back 1.1.1.1/24
>>>> R2 = s1/0 ip add 10.1.1.2/24 and loop back 2.1.1.1/24
>>>> clock rate 64000 on both sides
>>>> R1 and R2
>>>>
>>>> router ospf 1
>>>> net 0.0.0.0 255.255.255.255 are 0
>>>>
>>>> thks
>>>>
>>>>
>>>> Blogs and organic groups at http://www.ccie.net
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>>
>>
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>>
>> ______________________________**______________________________**
>> ___________
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>> list/CCIELab.html <http://www.groupstudy.com/list/CCIELab.html>
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>>
>>
>>
>>
>>
>>
>>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina

Blogs and organic groups at http://www.ccie.net
Received on Sun Jul 17 2011 - 20:05:56 ART