[DMM] Re: SRv6 replacement of GTP-U for 6G - Planned proposa l for a 3GPP study

Hello Markus -

I'm a bit confused by your proposal.

As indicated in the slide set, slides 1-7, SRv6 makes sense as a TE 
replacement for MPLS in the user plane. But I don't see how SRv6 (at 
least in its current form) provides value as a replacement for GTP-U.

In addition to the PDU (IP packet) being transported, GTP-U includes a 
header that contains RAN-related information fields such as end point 
identifier (for mapping to a radio bearer), sequence numbers, QoS 
information, etc.

What value is SRv6 bringing to this capability?

/bill

On 2025-07-21 12:33 p.m., [email protected] wrote:
> Dear DMM and SRv6ops community,
> 
> I would like to draw your attention to an activity that we want to bring 
> to 3GPP to investigate for 6G. It is about the replacement of GTP-U by 
> SRv6 for mobile user plane. This should be of particular interest to all 
> operators/vendors already using/implementing SRv6 or planning its 
> introduction.
> 
> The last three slides in the slide set at https://datatracker.ietf.org/ 
> meeting/123/materials/slides-123-srv6ops-21-advancing-deutsche-telekoms- 
> traffic-engineering-for-srv6-01 <https://datatracker.ietf.org/ 
> meeting/123/materials/slides-123-srv6ops-21-advancing-deutsche-telekoms- 
> traffic-engineering-for-srv6-01> provide more information about our 
> motivation and will be presented by me tomorrow during srv6ops session.
> 
> Please read them, attend tomorrow's SRv6ops session or contact me or 
> Maria if you are interested.
> 
> We are particularly interested in expanding our round of supporters in 
> 3GPP, getting an assessment from you that you may have already done on 
> this topic and studying with you if 3GPP agrees.
> 
> Br
> 
> Markus
> 

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