Re: [cso] Directional Changes for CSO work
Young Lee <ylee@huawei.com> Fri, 10 September 2010 21:12 UTC
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Date: Fri, 10 Sep 2010 16:12:56 -0500
From: Young Lee <ylee@huawei.com>
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Subject: Re: [cso] Directional Changes for CSO work
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Greg and Ning, I concur with you. Please see in-line for my comments. Thanks. Young _____ From: cso-bounces@ietf.org [mailto:cso-bounces@ietf.org] On Behalf Of Ning So Sent: Friday, September 10, 2010 10:20 AM To: Greg Bernstein; cso@ietf.org Subject: Re: [cso] Directional Changes for CSO work Greg, I agree with your view. Ning _____ From: Greg Bernstein <gregb@grotto-networking.com> To: cso@ietf.org Sent: Fri, September 10, 2010 10:18:15 AM Subject: Re: [cso] Directional Changes for CSO work Hi Young and all, from the point of view of finding out what the network has to offer the application (or what it is currently providing) the emphasis on data centers seems appropriate. It seems to me that we potentially have three networking scenarios of interest: (1) Internal to the data center (between processors, storage, external communications) (intra-data center) YOUNG>> I think L2 LAN network connecting servers/applications (Ethernet Bridge and L2 network protocols) can be a constraining factor for user experience. We tend to overlook intra-data center networking issue, which needs to be factored in overall quality of experience estimation. (2) Between data centers (for larger distributed applications, for migration, data distribution, etc..) (inter-data center) YOUNG>> Application mobility between data center can be very dynamic in nature. Application profile needs to be conveyed to networks (such as security level on sharing, b/w, latency, etc) clearly so that networks would be able to route the application successfully meeting the application needs. (3) Between end users and data centers YOUNG>> Perhaps this is between end-users to data centers through networks ---Oscar brought up an important issue on if "user profile" (including the contents, preference in case of gaming server) needs to be conveyed to application and network and if the protocol scope should include this aspect. I think Oscar will bring this issue to the mailing list next week. These three areas also represent sucessively larger network contexts where we would have limits on what we can expect (or ask) of the underlying network. Is this in line with what folks are thinking? Young, I'll separately send you some possible additional text on the NS Query document. Cheers Greg B. On 9/9/2010 1:39 PM, Young Lee wrote: Hi, After a couple of conference calls with Ron Bonica (OPS AD) and Dan Romanscanu (OPS AD), we narrowed down the scope of work and have broken the CSO work into two pieces: (i) Network Aware Application Mobility (NAAM) (ii) Network Stratum Query (NS Query) Please see the draft charter descriptions in the attachment. Depending on the result of the IESG approval, we might pursue these two pieces as separate work items down the road if both are approved. Please also note that among many potential CSO applicability, we have narrowed the work in the context of Data Centers. The following diagram depicts the contexts of both NAAM and NS Query. If you are still interested in the new scope, we'd appreciate your comments on the charter descriptions or any other related matters. Thanks. Best Regards, Young -- =================================================== Dr Greg Bernstein, Grotto Networking (510) 573-2237
- Re: [cso] Directional Changes for CSO work Young Lee
- [cso] Directional Changes for CSO work Young Lee
- Re: [cso] Directional Changes for CSO work Greg Bernstein
- Re: [cso] Directional Changes for CSO work Ning So
- Re: [cso] Directional Changes for CSO work Young Lee
- Re: [cso] Directional Changes for CSO work Daniele Ceccarelli
- [cso] Two new drafts Young Lee