Re: Synchronous and asynchronous communication

I see "physical-layer" command is present in your 2811.
Thats the command you use to convert .

Thnx !
Gaurav Madan

On Mon, Jan 31, 2011 at 5:07 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar> wrote:
> Gaurav,
> at least in the routers I have access to, T interfaces can not do async:
>
> R1#sh hard
> ...
> Cisco 2811 (revision 53.51) with 237568K/24576K bytes of memory.
> Processor board ID FTX1132F033
> 2 FastEthernet interfaces
> 2 Low-speed serial(sync/async) interfaces
> ...
> R1#conf t
> Enter configuration commands, one per line. End with CNTL/Z.
> R1(config)#int s 0/0/0
> R1(config-if)#p?
> physical-layer priority-group pulse-time
>
> R1(config-if)#p
>
> ------------------------
>
> GW#sh hard
> ...
> isco 2610XM (MPC860P) processor (revision 1.0) with 127430K/3642K bytes of
> memo
> ry.
> Processor board ID JAE07382264
> M860 processor: part number 5, mask 2
> 1 FastEthernet interface
> 2 Serial interfaces
> ...
> GW#conf t
> Enter configuration commands, one per line. End with CNTL/Z.
> GW(config)#int s 0/0
> GW(config-if)#p?
> priority-group pulse-time
>
> GW(config-if)#p
>
> Can you please test it ?
> -Carlos
>
>
>
>
> GAURAV MADAN @ 30/01/2011 12:57 -0300 dixit:
>>
>> Under Serial-interface issue the command :
>>
>> int serial <>
>> physical-layer async .
>>
>> 1) By default the interface will operate in SYNC mode
>> 2) You can switch between sync and async mode
>> 3) This is applicable to WIC / HWIC -2T , HWIC-1T , HWIC-2A/S etc . On
>> ISRs and ISR-G2 .. Other platform line cards ... I am not sure
>>
>> Thanks
>> Gaurav Madan
>> CCIE
>>
>> On Sun, Jan 30, 2011 at 9:16 PM, Routing Freak <routingfreak_at_gmail.com>
>> wrote:
>>>
>>> how to change a interface to syn or asyn
>>> is there any command to change a router serial interface as a asyn
>>> whether ethernet interface has any significance wid sync and async
>>> interface
>>>
>>> On Sun, Jan 30, 2011 at 9:07 PM, GAURAV MADAN <gauravmadan1177_at_gmail.com>
>>> wrote:
>>>>
>>>> Communication is called asynchronous if the sender and receiver do not
>>>> need to synchronise before each transmission. A sender can wait
>>>> arbitrarily long between transmissions and the receiver must be ready
>>>> to receive data when it arrives.
>>>>
>>>> Synch. transmission agree to clock rate before the data transmission
>>>> occurs .
>>>>
>>>> Example would be : Serial interface which can work in sync as well as
>>>> async mode .
>>>> In sync mode ; you have to configure clock rate on DCE and then only
>>>> data transmission occurs .
>>>>
>>>> Async serial interfaces ; there is no funda of clock rate CLI .
>>>>
>>>> I hope I made things clearer .
>>>>
>>>> Gaurav Madan
>>>> CCIE
>>>>
>>>> On Sun, Jan 30, 2011 at 3:14 PM, Routing Freak <routingfreak_at_gmail.com>
>>>> wrote:
>>>>>
>>>>> Can anyone tell me what is the difference between the synchronous and
>>>>> asynchronous communication in routers,switches and hosts
>>>>>
>>>>>
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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 Mon Jan 31 2011 - 17:21:48 ART