1. Maintenance Items
  2. 0393
  3. Request
Requested revision
Standard:IEEE Std 802.1Qcz-2023Clause:8.6.5
Clause title:Flow classification and metering
Rationale for revision
IEEE Std 802.1Q-2022 amendment of 802.1Qcz added YANG for ATS.
8.6.5 states that "PSFP, ATS and CI share common per-stream classification and metering elements, as shown in Figure 8-13"
YANG tree of ATS creates its own stream-filter-instance-table of namespace "ats-bridge" and
PSFP creates its own stream-filter-instance-table of namespace "psfp-bridge" as attached.

Per current YANG configuration, own stream-filter-instance-table is created and used.
If it is the case, two max-sdu-size could be applied to a single received frame because the frame passes thru
two separate stream-filters. And, it is true too for admin-ipv because both ATS and PSFP have own stream-gate-instance-table.
Proposed text
Clarification is needed that current YANG configuration is aligned with standard.
If then, statement such as "PSFP, ATS and CI can have own stream filter table and order of applying stream filter can
be implementor specific."
Impact on existing networks
Existing YANG configuration may need to be updated.
Originator
Name:Woojung HuhEmail:Woojung.huh@microchip.com
Affiliation:Microchip
Submitted:2026-02-27