Re: [Bloat] FW: [Dewayne-Net] Ajit Pai caves to SpaceX but is still skeptical of Musk's latency claims

[Michael Richardson <mcr@sandelman.ca>]

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David P. Reed <dpreed@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@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [


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