Re: Frame-relay connectionless ?

No, it does not. Special consideration must be given in that senerio and it
is not optimal.

Mark Jackson, CCIE#4736

Sent from my iPhone
Please excuse spelling errors

On Oct 28, 2009, at 11:51 AM, "Abraham, Tharak" <tharakabraham_at_gmail.com>
wrote:

oops..thats (a lil) too much of an assurance !

btw this went slightly off topic towards monitoring..-:)
does SAA work for all, considering a heterogeneous network ?

Best Regards,
Tharak Abraham Luke

On Wed, Oct 28, 2009 at 11:49 PM, mark jackson <markcciejackson_at_gmail.com>wrote:

> Most certainly my kind sir :-)
> AT&T for one. Now would'nt you like to know how??? But of course you would,
> that would be like drawing a hungry crowd, and failing to provide a meal...
> Using SAA support. With, service providers monitor operations to include,
> bit not limited to(wait for it, wait for it):
>
> * jitter or inter packet variance
> * path jitter
> * connect time
> * and various performance metrics (and they very by sla and sp)
>
> There are drawbacks of course. But that wasn't the question.
> Hopefully I have been helpful and do wish that I was clear. Kindly let me
> know if I missed something ;-)
> Good day kind sir. (god damn, I'm really starting to sound like Darby
> Weaver :-(
>
> Mark Jackson, CCIE#4736
>
> Sent from my iPhone
> Please excuse spelling errors
>
> On Oct 28, 2009, at 11:06 AM, "Abraham, Tharak" <tharakabraham_at_gmail.com>
> wrote:
>
> hehe..
> Good reply Mark, made sense !
> But could you give me an eg: where an SP gives an assurance like that ?
>
>
>
> On Wed, Oct 28, 2009 at 7:01 AM, Mark Jackson <<markcciejackson_at_gmail.com>
> markcciejackson_at_gmail.com> wrote:
>
>> You calling me a freek??? ;-)
>> The connectionless mode is message-oriented and supports data transfer in
>> self-contained units with no logical relationship required between units.
>> Because there is no acknowledgement of each data unit transmission, this
>> service mode can be unreliable in the most general case. However, a specific
>> provider can provide assurance that messages will not be lost, duplicated,
>> or reordered.
>>
>> The acknowledged connectionless mode provides the means by which a data
>> link user can send data and request the return of data at the same time.
>> Although the exchange service is connectionless, in-sequence delivery is
>> guaranteed for data sent by the initiating station. The data unit transfer
>> is point-to-point.
>>
>>
>>
>>
>> On Tue, Oct 27, 2009 at 5:25 PM, Abraham, Tharak <<tharakabraham_at_gmail.com>
>> tharakabraham_at_gmail.com> wrote:
>>
>>> Anantha,
>>>
>>> Frame relay is a connection oriented protocol, but as the guide says it
>>> doesnt do anything on itself for
>>> retransmission for errors.Hence service from the upper layers are
>>> required.
>>> Wordings like this really gets all confused..-:)
>>>
>>> Mark,
>>>
>>> i believe peer to peer FR is also connection oriented as any
>>> others...think
>>> VC.
>>> Does FREEK have something to do with the data path ?
>>>
>>>
>>> Tharak.
>>>
>>> On Wed, Oct 28, 2009 at 3:19 AM, Anantha Subramanian Natarajan <
>>> <anantha.natarajan_at_gravitant.com>anantha.natarajan_at_gravitant.com>
>>> wrote:
>>>
>>> > Hi All,
>>> >
>>> > I was going through a book (CCIE Self-study CCIE Security Exam
>>> > Certification Guide,april 2003 print) on a section "Example of
>>> Peer-to-peer
>>> > Communication" and under this it has the below sentence
>>> >
>>> > "Frame Relay is connectionless so,if an error occurs,it's up the to
>>> upper
>>> > layers to retransmit"
>>> >
>>> > My understanding is, frame-relay is a connection-oriented protocol,is
>>> the
>>> > above having a typo or I am missing basic or is it trying to convey
>>> > something different .Kindly clarify me the same.
>>> >
>>> > Thanks for all the help
>>> >
>>> > Regards
>>> > Anantha Subramanian Natarajan
>>> >
>>> >
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>>
>>
>> --
>> Mark Jackson, CCIE #4736
>> Senior Network, Security and Voice Architect
>>
>> 858.705.1861

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Received on Wed Oct 28 2009 - 11:59:54 ART