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Analysis of SCION components
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SCION DP as IPv6 routing header - discussion #13

Closed nicorusti closed 1 year ago

nicorusti commented 1 year ago

As discussed in https://github.com/scionassociation/scion-components_I-D/pull/12#pullrequestreview-1326484875 by @matzf and in https://github.com/scionproto/scion/discussions/4324 :

I think it would be worth expanding on this topic and the challenges it poses: The main challenges are:

  • intra-domain forwarding needs to be revisited (either make intra-domain routing infra IPv6+SCION aware, use other routing headers on top for local forwarding (SRv6), or encapsulate).
  • addressing: SCION endpoint needs AS information to query path to destination; IPv6 addresses don't contain this information. keep separate SCION addresses, assign special address ranges that encode AS number, or design (secure) mapping from address ranges to ASes.
matzf commented 1 year ago

intra-domain forwarding needs to be revisited (either make intra-domain routing infra IPv6+SCION aware, use other routing headers on top for local forwarding (SRv6), or encapsulate).

Turns out this is already solved! :wink: We can use the same approach used with the Segment Routing Header (which I had misunderstood). See https://github.com/scionproto/scion/discussions/4324#discussioncomment-5265015

nicorusti commented 1 year ago

Closing this issue as discussion is advancing in https://github.com/scionproto/scion/discussions/4324