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Survey on Segment Routing with MPLS


From: Donnet Benoît via NANOG <nanog () lists nanog org>
Date: Wed, 26 Aug 2026 08:12:26 +0000

Dear colleagues,

We are conducting a research survey on Segment Routing (SR-MPLS) traffic engineering practices in operational networks, 
as part of an ongoing measurement study at the University of Liège (Belgium).


Our work builds on AReST, a methodology we developed to detect and characterize SR-MPLS tunnels from external 
traceroute measurements (paper: https://orbi.uliege.be/bitstream/2268/337150/1/paper.pdf — code: 
https://gitlab.uliege.be/segment-routing). The goal of this survey is to complement our external measurements with 
first-hand operational insight from network engineers and architects.


If you are involved in the design, deployment, or operation of SR-MPLS in your network, I would greatly appreciate your 
input. The survey takes approximately 5 minutes and all responses will be kept strictly anonymized in any publication.

https://forms.gle/offDDBNaDs9zXBUX6


Thank you for your time — every response helps, even if your deployment is limited or in early stages.


Best regards,


Benoit

—
Prof. Benoit Donnet
Université de Liège (ULiège)
Bât. B28 Algorithmique des Grands Systèmes
Quartier Polytech 1
Allée de la Découverte 10
4000 Liège
Phone: +32 4 3662279



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