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From: Sebastian Moeller <moeller0@gmx.de>
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Date: Fri, 2 Sep 2022 22:11:34 +0200
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To: Michael Richardson <mcr@sandelman.ca>
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Subject: Re: [Starlink] Starlink "beam spread"
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Hi Michael,


Thanks!

> On Sep 2, 2022, at 20:34, Michael Richardson <mcr@sandelman.ca> wrote:
>=20
>=20
> Sebastian Moeller <moeller0@gmx.de> wrote:
>>> sadly, they aren't doing IP processing.  I don't think that they =
ever
>>> will decide to for NIH reasons.  I suspect that their SDN hardware
>>> probably can, and I think that SR6 is probably ideal for their use,
>>> but...
>=20
>> 	Why would SR6 be better than any other "underlay" encapsulation =
here,
>> like MPLS or SR-MPLS? Naively put this seems to trade 4 byte per =
label
>> with a full 40 byte IPv6 header plus 8 bytes plus 16 bytes per
>=20
> SR6 collapses all those things into a single IPv6 forwarding engine.
> The idea is that it's converged.   As for the 44 byte header, as =
envisioned
> by the SR6 people, they would use the original header, but that's =
against the
> Ipv6 architecture.  There are ways to compress that header down if you =
need
> to do that.
>=20
>> "label". Asking out of genuine curiosity what are those additional
>> bytes in overhead actually buying (except the freedom from MPLS).
>=20
> IPv6 all the way down.


Thanks. Still puzzled but now in an informed way ;)

Regards
	Sebastian