Re: WGLC #2 starts for draft-ietf-dmm-requirements-03
Alper Yegin <[email protected]>
| Newsgroups | gmane.ietf.nemo |
|---|---|
| Message-ID | <[email protected]> |
On May 17, 2013, at 8:42 AM, 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" ? > If that were the case, then the operators wouldn't be offloading the subscriber IP traffic from WiFi to Internet. Alper > > 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. >>> >> >> _______________________________________________ >> dmm mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/dmm >