Hi Daniel, Making the problem space clear is expected. Your clarification looks like that SAN wants to solve the problems, which are similar with several existing works. So hope to find out what is the difference in the problem and use cases. Otherwise, you can sync with the process of the existing works.
CATS should have the solid groundwork first, and then work on the framework to see what is needed for the furture solutions. Of course, it is not to say the pre-solution and some details can't be discussed now. Insteadly the sufficient considerations are always good to contribute to the groundwork and framework first. Thanks. Regards, Peng liupeng...@chinamobile.com From: huang.guangp...@zte.com.cn Date: 2023-03-26 16:01 To: adr...@olddog.co.uk CC: c...@ietf.org; draft-zhou-intarea-aware-route-san-datab...@ietf.org; int-area@ietf.org; j...@juniper.net; ek.i...@gmail.com; aretana.i...@gmail.com; andrew-i...@liquid.tech; james.n.guich...@futurewei.com; evyncke=40cisco....@dmarc.ietf.org Subject: Re: [Cats]More on "Service Aware Network" Hi Adria, Eric and all, On behave of the authors of SAN drafts, I'd like to make a couple of quick clarifications. SAN is designed to enhance the network's abilities of being aware of both service requirements and the service-related cloud resource status and so being able to steer the traffic in terms of fine-grained requirements from perspectives of networking and computing resource status. SAN intends to provide a unified interface which we call it globally unique service for aforementioned enhancement. Nevertheless, to achieve this, both L3 and L4 might be involved although majority of the designing would focus on L3, this is why the drafts have been presented in intarea working group. when it comes to routing-related sections, we believe it should be perfectly within the charter of CATS and we'll move them to CATS for further discussion. The charter of cats now focuses on framework rather than specific solutions while SAN is trying to present to the community with an end-to-end solution demonstrating our thinking with regard to the use cases and problems. Routing part of SAN would try to sync with cats. Everybody is welcome to join the discussion at Tuesday's session and any comments, suggestions and contributions would be appreciated very much. BR, Daniel Huang 黄光平 huangguangping 标准团队/有线规划部 Wireline architecture team./Wireline Product R&D Institute 南京市雨花区软件大道50号中兴通讯2号楼 R&D Building, ZTE Corporation Software Road No.50, Yuhua District, Nanjing, P..R.China, 210012 M: +86 13770311052 E: huang.guangp...@zte.com.cn www.zte.com.cn Original From: AdrianFarrel <adr...@olddog.co.uk> To: c...@ietf.org <c...@ietf.org>;draft-zhou-intarea-aware-route-san-datab...@ietf.org <draft-zhou-intarea-aware-route-san-datab...@ietf.org>; Cc: int-area@ietf.org <int-area@ietf.org>;'John Scudder' <j...@juniper.net>;'Erik Kline' <ek.i...@gmail.com>;'Alvaro Retana' <aretana.i...@gmail.com>;'Andrew Alston' <andrew-i...@liquid.tech>;'James Guichard' <james.n.guich...@futurewei.com>;'Eric Vyncke (evyncke)' <evyncke=40cisco....@dmarc.ietf.org>; Date: 2023年03月26日 13:18 Subject: [Cats] More on "Service Aware Network" -- Cats mailing list c...@ietf.org https://www.ietf.org/mailman/listinfo/cats Further to my previous, I’ve now had a chance to skim https://datatracker.ietf.org/doc/draft-zhou-intarea-aware-route-san-database/ It seems to me that this draft is “routing related”, and highly related to CATS. In particular, the overlay of “service routing” with edges and relay nodes is leveraged through knowledge of “compute resource status” injected into the routing overlay network nodes. Many of the issues addressed here seem to be directly overlapping with CATS in terms of what problem is being solved, what metrics need to be advertised, and how the overlay is built. While (obviously) this draft intends to leverage the solution set developed as “SAN”, it would be worthwhile synchronising the use case and problem statement with that in CATS. One of the jobs of CATS, in the medium term, is to evaluate existing tools and mechanisms to see what can address the CATS problems and where the gaps are. So we would certainly welcome learning more about SAN and the use cases that the authors hope to address. Thanks, Adrian From: Cats <cats-boun...@ietf.org> On Behalf Of Adrian Farrel Sent: 26 March 2023 05:57 To: 'Eric Vyncke (evyncke)' <evyncke=40cisco....@dmarc.ietf.org>; c...@ietf.org Cc: int-area@ietf.org; 'John Scudder' <j...@juniper.net>; 'Erik Kline' <ek.i...@gmail.com>; 'Alvaro Retana' <aretana.i...@gmail.com>; 'Andrew Alston' <andrew-i...@liquid.tech>; 'James Guichard' <james.n.guich...@futurewei.com> Subject: Re: [Cats] FW: [Int-area] Intarea WG agenda Thanks Eric, that’s helpful. The agenda slot is: Tuesday, March 28, 202317:00-18:00 Tuesday Afternoon Session IV The agenda item and related drafts are as shown below. 4. Service aware network (SAN) framework and data plane solutions - Daniel Huang draft-huang-intarea-san-framework-00 draft-ma-intarea-identification-header-of-san-00 draft-ma-intarea-encapsulation-of-san-header-00 draft-zhou-intarea-aware-route-san-database-00 draft-zhou-intarea-computing-segment-san-01 20 mins The work certainly seems related, but a quick reading suggests that the approach chosen is to mark the traffic according to the service and then route according to that marker. This seems (to me) to be closer to APNET proposals (https://datatracker.ietf.org/wg/apn/about/) where a charter is currently being developed and discussed with the IESG. I would certainly encourage the authors with their work, but also I would invite them to try to contribute to existing work efforts and not create new ones where there is overlap. Cheers, Adrian From: Cats <cats-boun...@ietf.org> On Behalf Of Eric Vyncke (evyncke) Sent: 26 March 2023 05:35 To: c...@ietf.org Cc: int-area@ietf.org; John Scudder <j...@juniper.net>; Erik Kline <ek.i...@gmail.com>; Alvaro Retana <aretana.i...@gmail.com>; Andrew Alston <andrew-i...@liquid.tech>; James Guichard <james.n.guich...@futurewei.com> Subject: [Cats] FW: [Int-area] Intarea WG agenda For information to the CATS WG as the INTAREA WG agenda includes individual drafts about "service aware network" (SAN). At first sight, those SAN drafts look pretty close to the CATS charter. So, feel free to join us in INTAREA WG meeting (or on the mailing list). Regards -éric From: Int-area <int-area-boun...@ietf.org> on behalf of Wassim Haddad <wassim.haddad=40ericsson....@dmarc.ietf.org> Date: Sunday, 26 March 2023 at 13:07 To: Internet Area <int-area@ietf.org> Cc: "intarea-cha...@ietf.org" <intarea-cha...@ietf.org> Subject: [Int-area] Intarea WG agenda Hi, The Intarea WG meeting agenda is available at: https://datatracker.ietf.org/meeting/116/materials/agenda-116-intarea-01 Presenters, please upload your slides or send a copy to the chairs. Thanks, Wassim H.
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