Early Review of draft-ietf-netmod-sub-intf-vlan-model-17
review-ietf-netmod-sub-intf-vlan-model-17-opsdir-early-dunbar-2025-10-22-00

Request Review of draft-ietf-netmod-sub-intf-vlan-model
Requested revision No specific revision (document currently at 17)
Type Early Review
Team Ops Directorate (opsdir)
Deadline 2025-10-24
Requested 2025-10-08
Requested by Mahesh Jethanandani
Authors Robert Wilton , Scott Mansfield
I-D last updated 2025-10-29 (Latest revision 2025-10-08)
Completed reviews Yangdoctors Early review of -14 by Per Andersson (diff)
Opsdir Early review of -17 by Linda Dunbar
Genart IETF Last Call review of -17 by Susan Hares
Secdir Early review of -17 by Dave Thaler
Intdir Early review of -17 by Darren Dukes
Assignment Reviewer Linda Dunbar
State Completed
Request Early review on draft-ietf-netmod-sub-intf-vlan-model by Ops Directorate Assigned
Posted at https://mailarchive.ietf.org/arch/msg/ops-dir/nzzJfGYzFDPqW-vUu0rtmHI7h7A
Reviewed revision 17
Result Has nits
Completed 2025-10-22
review-ietf-netmod-sub-intf-vlan-model-17-opsdir-early-dunbar-2025-10-22-00
Summary: The draft defines YANG models for VLAN and flexible encapsulation on
sub-interfaces. It is technically solid and aligns well with existing interface
and VLAN models.

Questions:
- Given that most commercial routers already implement mature sub-interface
VLAN configurations, and are unlikely to change their operational behavior,
could the authors clarify whether the intent of this model is purely to provide
a standardized YANG abstraction for management systems rather than to influence
device-level configuration semantics?

- How is this model intended to coexist with the bridge-based VLAN model (IEEE
802.1Q / RFC 8919)? Can both be used on the same device or interface?

Minor comments:
- Need to clarify operational behavior when devices support both bridge-based
VLAN configuration (per IEEE 802.1Q / RFC 8919) and sub-interface–based VLAN
configuration (as defined in this draft), particularly if the same physical
port could be referenced by both models.

Best Regards,
Linda Dunbar