Re: Frame-relay connectionless ?

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>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
> > 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> 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 - 11:19:47 ART