[tsvwg] Signaling CE interpretation by a DSCP

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Hi Roland,

[RudiG]: Don't know whether that makes sense. If DSCP was not an input to the network, but rather an output ?

[RudiG]: Meaning: the router setting CE marks knows the method it uses to set them. I'd expect that router to be close to the terminal. A standard DSCP on the last mile may be accepted as a standard value and pass unbleached (unless it is consumed already for any other purpose). Thus the router could indicate by a DSCP, that it speaks "classic CE" or "L4S CE", whenever it is getting active on the ECN bits.

[RudiG]: That's not well thought through, just an idea.

Regards, Ruediger

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[RB]......It would be better to make DSCPs "work" (at least not bleaching them) instead of creating more and more work arounds.

> * SCE (ECT(1) as output) is more intuitive to me.

[RB] The nice thing about this is that the output is at least unambiguous:
ECT(1) means some/light congestion level (scalable congestion control reaction), CE means traditional indication of congestion (stronger congestion control reaction). Whereas in L4S it is not clear whether CE actually means "classic CE" or "L4S CE".