Re: Synchronous and asynchronous communication

Strange ..

Can you give me following :

1) sh inventory : so that i know which WIC/HWIC are you using in 2811
? ( tell me exact hardware where it is seen and where it is not seen )
2) IOS in c2800 of 2811 ?

Thnx
Gaurav Madan

On Mon, Jan 31, 2011 at 5:23 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar> wrote:
> Yep, that's a 2A/S interface, not a 2T. That's why I included a show
> hardware up front! :)
>
> -Carlos
>
> GAURAV MADAN @ 31/01/2011 08:51 -0300 dixit:
>>
>> 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
>>>>>>>
>>>>>>>
>>>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>>>
>>>>>>>
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>>>>
>>>>
>>>>
>>>>
>>>>
>>> --
>>> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>>>
>
> --
> 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 - 17:29:41 ART