[Starlink] Main hurdles against the Integration of Satellites and Terrestial Networks

[Hesham ElBakoury]

Given the discussions in this email thread, what IETF should standardize in
priority order  for the integrated NTN terrestrial networks?

Thanks,
Hesham

On Sun, Sep 17, 2023, 12:59 PM David Lang via Starlink <
starlink at lists.bufferbloat.net> wrote:

> it's very clear that there is a computer in the dishy that you are talking
> to.
> You get the network connection while the dishy is not connected to the
> satellites (there's even a status page and controls, stowing and unstowing
> for
> example)
>
> I think we've seen that the dishy is running linux (I know the routers run
> an
> old openwrt), but I don't remember the details of the dishy software.
>
> David Lang
>
>   On Sun, 17 Sep 2023, Alexandre Petrescu via Starlink wrote:
>
> > Date: Sun, 17 Sep 2023 19:21:50 +0200
> > From: Alexandre Petrescu via Starlink <starlink at lists.bufferbloat.net>
> > Reply-To: Alexandre Petrescu <alexandre.petrescu at gmail.com>
> > To: starlink at lists.bufferbloat.net
> > Subject: Re: [Starlink] Main hurdles against the Integration of
> Satellites and
> >      Terrestial Networks
> >
> >
> > Le 16/09/2023 à 01:32, Ulrich Speidel via Starlink a écrit :
> >> On 16/09/2023 5:52 am, David Lang wrote:
> >>>
> >>> In addition to that Ulrich says, the dishy is a full computer, it's
> >>> output is ethernet/IP and with some adapters or cable changes, you
> >>> can plug it directly into a router.
> >>
> >> We've done that with the Yaosheng PoE Dishy adapter - actually plugged
> >> a DHCP client straight in - and it "works" but with a noticeably
> >> higher rate of disconnects.
> >
> > It is good to know one can plug a DHCP client into the Ethernet of the
> > DISHY and receive DHCP replies.
> >
> > But that would be only a lead into what kind of DHCPv4 is supported, or
> not.
> >
> > I would ask to know whether the DHCP server runs on the DISHY, or
> > whether it is on the ground network of starlink, i.e. the reply to DHCP
> > request comes after 50ms, or after 500microseconds (timestamp difference
> > can be seen in the wireshark run on that Ethernet).
> >
> > This (DHCP server daemon on dishy or on ground segment) has an impact of
> > how IPv6  can be, or is, made to work.
> >
> > This kind of behaviour of DHCP - basically asking who allocates an
> > address - has seen a continous evolution in 3GPP cellular networks since
> > they appeared.  Nowadays the DHCP behaviour is very complex in a 3GPP
> > network; even in a typical smartphone there are intricacies about where
> > and how the DHCP client and server works. With it comes the problem of
> > /64 in cellular networks (which some dont call a problem, but I do).
> >
> > So, it would be interesting to see whether starlink has the same /64
> > problem as 3GPP has, or is free of it (simply put: can I connect several
> > Ethernet subnets in my home to starlink, in native IPv6 that is, or
> not?).
> >
> > Alex
> >
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