SRm6 (was:SRv6)

Saku Ytti saku at
Thu Sep 17 09:05:24 UTC 2020

On Thu, 17 Sep 2020 at 11:03, James Bensley <jwbensley+nanog at> wrote:

> MPLSoUDP lacks transport engineering features  like explicit paths, FRR LFA and FRR rLFA, assuming only a single IP header is used for the transport abstraction [1]. If you want stuff like TI-LFA (I assume this is supported in SRm6 and SRv6, but I'm not familiar with these, sorry if that is a false assumption) you need additional transport headers or a stack of MPLS labels encapped in the UDP header and then you're back to square one.

One of us has confusion about what MPLSoUDP is. I don't run it, so might be me.

SPORT == Entropy (so non-cooperating transit can balance)
DPORT == 6635 (NOT label)
Payload = MPLS label(s)

Whatever MPLS can do MPLSoUDP can, by definition, do. It is just
another MPLS point-to-point adjacency after the MPLSoUDP


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