Re: demand for DMM traffic steering

Alper,

There is no  mobility protocol here in this below deployment modek.  Mobility protocol based on GTP/PMIP comes into the second case when we introduce the access and the home network based separation. In a flat model, its just a SDN interface between the CP and DP functions. But, the way we perform gateway selection, allocate application specific gateways, migrate a data plane session, allow UE the gateway indicators ..it meets every single  DMM requirement that we have discussed in this group and with the side-affect of realizing CP/DP separation.



[cid:CA18E534-121E-4582-90A4-14AA394AEDEE]


Sri


From: Alper Yegin <[email protected]<mailto:[email protected]>>
Date: Thursday, July 17, 2014 12:39 PM
To: Sri Gundavelli <[email protected]<mailto:[email protected]>>
Cc: Marco Liebsch <[email protected]<mailto:[email protected]>>, "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>
Subject: Re: [DMM] demand for DMM traffic steering

Sri,

PMIP is a solution.
You can apply SDN approach to it by splitting CP and DP.

For example, a draft like draft-bernardos-dmm-pmip-03 talks about "access network anchoring".
And you can apply SDN to it (as you already mentioned jun your examples on this thread), or not.


Alper





On Jul 17, 2014, at 9:21 PM, Sri Gundavelli (sgundave) wrote:

I do not know your definition of approach vs solution, but one can argue
DMM itself is about a deployment model and an approach. I always insisted
its less of a protocol work and more about a tying many aspects. So, what
we have been discussing is a solution approach which has the essential
properties of CP/DP separation, aspect of optimized/stateless data plane,
application specific gateway allocations .. etc and that at the end is an
approach for realizing DMM.


Sri






On 7/17/14 10:59 AM, "Alper Yegin" <[email protected]<mailto:[email protected]>> wrote:

Intense readingŠ :-) Lot of abstractions, which I can only follow by
relating to specific solutions.

In my understanding, what Sri is describing is about "how to apply UP/CP
separation to various DMM solutions".
In the examples I see a number of DMM solutions defined with UP/CP
separation using Sri's terminology (e.g., per-flow mobility, access
network anchoring, host-specific route based solutions, etc).

So, it's not a solution by itself, but it's an approach that can be
applied to various solution techniques to SDNize them.
And that indeed has value.

Alper

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