Re: WGLC #2 starts for draft-ietf-dmm-requirements-03

We shouldn't require all the traffic to pay the price of centralization
just because some small subset of the flow need it.  LI should be a very
small proportion of the traffic, and those flows can be directed to a
collection point as needed.  If you really need per-flow, per-application
charging, you can send meta-information about the flows to a charging
collection box.  No need to send the flows themselves.

-Pete


Sri Gundavelli (sgundave) wrote:
> 
>> Distributed solution: Take IP traffic directly from access router to
>> the Internet.
> 
> 
> 
> 
> Counter argument.
> 
> 
> It implies, LI, Charging, DPI Šetc on each of the distributed nodes.
> Implies more "CAPEX and OPEX" ?
> 
> 
> I'm not against distributed models and 6909 is the proof point. But,
> IMO, it will hard to draw relation to cost models, based on traffic
> exit points. You may need mobility hierarchy in the network for "n"
> number of reasons and a centralized models for "m" number of reasons.
> It more about deployment choice, dependent on many parameters.
> 
> 
> 
> 
> Sri
> 
> 
> 
> 
> 
> 
> On 4/29/13 5:29 AM, "Alper Yegin" <[email protected]> wrote:
> 
>> Hi Charlie,
>> 
>> No, it should be less.
>> 
>> Distributed solution: Take IP traffic directly from access router to
>> the Internet.
>> Centralized solution: Take IP traffic from access router to a core
>> router to the Internet.
>> 
>> The latter suggests more CAPEX and OPEX.
>> 
>> Alper
>> 
>> 
>> 
>> On Apr 27, 2013, at 3:44 AM, Charles E. Perkins wrote:
>> 
>>> 
>>> Hello Alper,
>>> 
>>> I agree with your point, but it means that the total cost of the
>>> distributed solution is even more expensive.... right?
>>> 
>>> Regards,
>>> Charlie P.
>>> 
>>> On 4/26/2013 12:56 AM, Alper Yegin wrote:
>>>> Hi Charlie,
>>>> 
>>>>> - It is claimed that a centralized architecture requires more
>>>>> resources
>>>>>  than a distributed architecture.  This is usually false.  For
>>>>>  instance, if a centralized node requires 100 units, and 100
>>>>>  distributed nodes each require 1.03 units, the distributed
>>>>>  architecture requires 3 more units overall.
>>>> This would be true for tasks that can be performed either on the
>>>> distributed node or on the central node.
>>>> But the essential task for DMM systems, IP forwarding, is not of
>>>> that nature.
>>>> In centralized architecture, that task needs to be performed
>>>> *both* at the edge node and also at the central node (and in fact
>>>> even in
>>>> between) before the packets hit the Internet/mobile device.
>>>> 
>>>> 
>>>>> Even so, the additional expense of the distributed architecture
>>>>> would often be a bargain for reasons of redundancy, resiliency,
> etc.
>>>> 
>>>> Alper
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> _______________________________________________
>>>> dmm mailing list
>>>> [email protected]
>>>> https://www.ietf.org/mailman/listinfo/dmm
>>>> 
>>> 
>>> 
>>> --
>>> Regards,
>>> Charlie P.
>>> 
>> 
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