Re: Extending shim6 to use multiple locator pairs simultaneously

[arifumi <a@arifumi.net>]

Hi folks,

> In terms of thinking about this, it might make sense to start with  
> SCTP, since SCTP already supports tracking congestion information  
> for each path. Then you can ask yourself what would be needed if  
> both paths were used as the same time. Once we know what to do,  
> then applying it to TCP would be conceptually simple (even though  
> it might be hard in practice.)
> Note that SCTP only uses one path at a time, and only switches  
> after detecting a failure. So AFAIK the SCTP folks didn't explore  
> what would happen is both paths are used concurrently.
>    Erik
The SCTP RFC doesn't support concurrent multiple path, but there are  
not a single researches in this area. CMT-SCTP proposed by PET in  
Univ. of Delaware is one of those researches and looks successful.
http://www.eecis.udel.edu/~amer/PEL/poc/index.html

As Eric suggests, it seems to me not a good idea to use multiple  
paths concurrently without any modifications to transport protocols.  
CMT-SCTP is just those modifications to SCTP.