Thanks, Esko and Brian, also Bing and Carsten, for your valuable feedback. I will work on a primary draft towards next IETF meeting. I will start from protocol-independent model and also provide a CoAP-bound solution. Use case for constrained devices would also be introduced.
Any one who is interested to contribute or co-work on this is welcome to contact me. Regards, Sheng > -----Original Message----- > From: Anima <[email protected]> On Behalf Of Esko Dijk > Sent: Monday, March 18, 2024 7:14 PM > To: Brian E Carpenter <[email protected]>; Sheng JIANG > <[email protected]>; Anima WG <[email protected]> > Subject: Re: [Anima] Lightweight GRASP > > One nice thing about CoAP is that it has also been defined/used over other > transports, that are not UDP. Like directly over a serial link or over SMS. > This > was another potential use case: to use GRASP when there's not even IP > connectivity yet. > > The charter says this about a potential new "lightweight GRASP": > > Generic use cases of Autonomic Network and new GRASP > extensions/options for them > > If one sees it as an extension of GRASP (ability to run over non-TCP, UDP, or > non-IP transports) then it does fit in charter. > > Defining some use cases would be relevant also - if it's a wired ANI then we > don't have a huge amount of changes in links over times. If it's a wireless > (e.g. > 6LoWPAN) ANI then this may be the case. > Even if mesh links are highly variable over time, resulting in more packet > loss > (e.g. 6LoWPAN situations), TCP may still work ok if it's tuned to this use > case. > OpenThread's TCP implementation was I believe tuned in this way based on > work of Sam Kumar (see > https://www.usenix.org/conference/nsdi20/presentation/kumar ) . In Thread's > case, even when links change and mesh topology changes the nodes still keep > their original IPv6 address so the TCP communication can continue in > principle. > I never tested TCP performance yet in this case, but it would be interesting > to > see if there's a problem there or not, depending on the level of links change. > > Esko > > -----Original Message----- > From: Anima <[email protected]> On Behalf Of Brian E Carpenter > Sent: Monday, March 18, 2024 09:38 > To: 蒋胜 (Sheng Jiang) <[email protected]>; Anima WG > <[email protected]> > Subject: [Anima] Lightweight GRASP > > I think it would be good to see a first draft on this, with some ideas about > UDP > and COAP instead of TCP. > > Regards > Brian > > _______________________________________________ > Anima mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/anima > _______________________________________________ > Anima mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/anima _______________________________________________ Anima mailing list [email protected] https://www.ietf.org/mailman/listinfo/anima
