[DMM] review comments to draft-mhkk-dmm-mup-architecture-02

DMM participants,

As promised during the DMM session at IETF 122, I have reviewed draft-mhkk-dmm-mup-architecture-02. I found the document is very clearly written and easy to follow.

Given the widespread deployment of 3GPP 4G/5G architectures, I think it would be valuable to include a section on interworking strategies that enable MUP to overlay existing infrastructure. This would allow the MUP routing-based user plane to be introduced incrementally, without disrupting current network operations.

For instance, a MUP-PE could be deployed at the RAN backhaul edge-adjacent to a gNodeB or eNodeB-to terminate incoming GTP-U tunnels from the RAN. This node could implement SRv6 endpoint behaviors for GTP decapsulation (e.g., End.M.GTP6.E for IPv6 transport), allowing seamless integration with existing RAN deployments.

Best regards,

Linda Dunbar

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