[bess] Erik Kline's Discuss on draft-ietf-bess-srv6-services-11: (with DISCUSS)

Erik Kline via Datatracker <noreply@ietf.org> Thu, 17 February 2022 06:03 UTC

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Subject: [bess] Erik Kline's Discuss on draft-ietf-bess-srv6-services-11: (with DISCUSS)
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Erik Kline has entered the following ballot position for
draft-ietf-bess-srv6-services-11: Discuss

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DISCUSS:
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I have little to add to the DISCUSSes held by others beyond my support.

However, I would like to discuss having SRv6 control plane information, i.e.
SIDs and their behaviours etc., being isolated by associating it with
a separate SAFI.  Any other protocol element that needs to refer to such
information can make reference to it through context-appropriate extensions.

{AFI=IPv6, SAFI=unicast} is a valid way to advertise an SRv6 locator prefix,
for example, as that's just IPv6 forwarding information.  If SRv6-specific
information where separately advertised as {AFI=IPv6, SAFI=SRv6} then I
suspect it would be simpler to filter out that information, detect leaks,
and generally help the SRv6 domain fail closed more easily.

But I'm prepared to learn why this wouldn't work or would be somehow worse.