[NNagain] Flash priority

[Livingood, Jason]

On 3/8/24, 22:02, "Nnagain on behalf of David Lang via Nnagain" <nnagain-bounces at lists.bufferbloat.net <mailto:nnagain-bounces at lists.bufferbloat.net> on behalf of nnagain at lists.bufferbloat.net <mailto:nnagain at lists.bufferbloat.net>> wrote:

> In practice, priority bits are ignored on the Internet. There are no legal 
limits on what bits can be generated, and no reason to trust priority bits that 
come from a different network.
> As I understand the current state of the art, best practice is to zero out 
priorities at organizational boundries

[JL] Quite true: each network tends to use DSCP marks on a private/internal basis and so will bleach the DSCP marks on ingress from peers. This will, however, change with the upcoming IETF RFC on Non-Queue-Building (NQB) Per Hop Behavior - https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-nqb. And I can report that we at Comcast now permit DSCP-45 inbound for NQB packets, in case developers would like to experiment with this (we just finished updating router configs last week for residential users on DOCSIS; FTTP and commercial are still in process).