[Cats] More on "Service Aware Network"

[Adrian Farrel <[e-mail]>]

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 <[e-mail]> On Behalf Of Adrian Farrel
Sent: 26 March 2023 05:57
To: 'Eric Vyncke (evyncke)' <evyncke=[e-mail]>; [e-mail]
Cc: [e-mail]; 'John Scudder' <[e-mail]>; 'Erik Kline' <[e-mail]>; 'Alvaro Retana' <[e-mail]>; 'Andrew Alston' <[e-mail]>; 'James Guichard' <[e-mail]>
Subject: Re: [Cats] FW: [Int-area] Intarea WG agenda

 

Thanks Eric, that’s helpful.

 

The agenda slot is:

Tuesday, March 28, 2023
17:00-18:00 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 <[e-mail]> On Behalf Of Eric Vyncke (evyncke)
Sent: 26 March 2023 05:35
To: [e-mail]
Cc: [e-mail]; John Scudder <[e-mail]>; Erik Kline <[e-mail]>; Alvaro Retana <[e-mail]>; Andrew Alston <[e-mail]>; James Guichard <[e-mail]>
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 <[e-mail] <mailto:[e-mail]> > on behalf of Wassim Haddad <wassim.haddad=[e-mail] <mailto:wassim.haddad=[e-mail]> >
Date: Sunday, 26 March 2023 at 13:07
To: Internet Area <[e-mail] <mailto:[e-mail]> >
Cc: "[e-mail] <mailto:[e-mail]> " <[e-mail] <mailto:[e-mail]> >
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.