[Bloat] FW: [Dewayne-Net] Ajit Pai caves to SpaceX but is still skeptical of Musk's latency claims
Michael Richardson
mcr at sandelman.ca
Fri Jun 12 11:30:55 EDT 2020
David P. Reed <dpreed at deepplum.com> wrote:
> Now if the satellite manages each flow from source to destination as a
> "constant bitrate" virtual circuit, like Iridium did (in their case
> 14.4 kb/sec was the circuit rate, great for crappy voice, bad for
> data), the Internet might work over a set of wired-up circuits (lke
> MPLS) where the circuits would be frequently rebuilt (inside the
> satellite constellation, transparent to the Internet) so queuing delay
> would be limited to endpoints of the CBR circuits.
That's what I think they will do.
But, it might be SPRING rather than MPLS.
> But I doubt that is where they are going. Instead, I suspect they
> haven't thought about anything other than a packet at a time, with no
> thought to reporting congestion by drops or ECN.
Agreed.
> And it's super easy to build up seconds of lag on TCP if you don't
> signal congestion. TCP just keeps opening its window, happy as a clam.
--
] Never tell me the odds! | ipv6 mesh networks [
] Michael Richardson, Sandelman Software Works | IoT architect [
] mcr at sandelman.ca http://www.sandelman.ca/ | ruby on rails [
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