IETF 125: Traffic Engineering Architecture and Signaling (TEAS) 2026-03-19 08:30

Why It Matters

Finalizing these TEAS drafts will give telecom operators standardized, interoperable tools for 5G network slicing, directly influencing rollout speed and cross‑vendor compatibility.

Key Takeaways

• Four TEAS drafts discussed, including path placement and MPT updates.
• RFC 9889 approved, enabling 5G network slice realization via existing tech.
• Two documents nearing IESG clearance after addressing scoping discussions.
• Several expired drafts urged to revive and push through weekly calls.
• Liaison feedback from 3GPP RAN and SA groups integrated into drafts.

Summary

The TEAS Working Group convened at IETF 125 to review the status of its traffic‑engineering and network‑slicing specifications. Co‑chairs Pawan Biram and Oscar Gonzalez led a session that covered four primary drafts—path placement, MPT updates, a 5QI‑to‑TIFSER DSCP mapping, and a network‑slice application model—while reminding participants of IETF conduct and IPR policies. Key progress items included the publication of RFC 9889, which formalizes 5G network‑slice realization using existing technologies, and two drafts moving toward IESG clearance after resolving scoping debates about LSP‑based versus broader models. Several documents remain in an “expired” state, prompting chairs to urge authors to reactivate them via the group’s weekly calls. Liaison input from 3GPP’s RAN3 and SA groups has been incorporated, though additional SA feedback still requires a formal response. Specific examples highlighted the NRP scalability draft, now ready for a last‑call review, and the MPLS‑based network‑resource‑partitioning proposal, which still has open issues slated for resolution before the next IETF. The RSVP‑cryptography drafts, recently adopted, await editorial clean‑up, while the ORAN‑centric terminology controversy was resolved by stripping vendor‑specific labels from figures. The session underscores a critical push to finalize 5G slicing standards before the upcoming IETF meeting, with clear action items for authors, reviewers, and liaison bodies. Successful clearance will provide operators and equipment vendors with interoperable specifications, accelerating deployment of sliced services across both MPLS and IP networks.

Original Description

Traffic Engineering Architecture and Signaling (TEAS) meeting session at IETF 125

2026-03-19 08:30

https://datatracker.ietf.org/group/teas/about/