Network Slicing End-to-End — Trace a Slice Selection

An enterprise customer uses a UE that requests two slices simultaneously: one eMBB slice (S-NSSAI 01-000001) for general data, and one URLLC slice (S-NSSAI 02-000100) for factory automation. You have the full end-to-end trace from registration through two PDU session setups. Trace: (a) how S-NSSAI is negotiated between UE, AMF and NSSF, (b) whether NSSF selects different AMFs or the same AMF serves both, (c) how each slice maps to its own SMF and UPF, (d) that isolation is actually enforced at the UPF level. This is a success case — everything works. Your job is to read the signalling and understand why slicing is powerful: separate control-plane state per slice (different SMFs), separate user-plane processing (different UPFs), different 5QIs, different DNNs.