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Sandbox Lab intermediate 25 min3 graded questions
Establishing a PDU Session
A UE is already registered. Establish a PDU session to DNN=internet, observe UPF selection and the PFCP session created on the UPF, then ping 8.8.8.8 through the data plane.
Scenario
UE imsi-999700000000001 is already registered and CM-CONNECTED. The user tapped "Mobile Data ON" on their phone. That triggers a PDU Session Establishment Request that flows UE → AMF → SMF, and the SMF has to:
• Pull subscription data from the UDM.
• Pick an appropriate UPF for the requested DNN and S-NSSAI.
• Create a PFCP session on that UPF (with PDRs, FARs, QERs).
• Tell the gNB to set up N3 GTP-U tunnels.
• Hand the UE an IP address.
Walk through the whole flow, verify the PFCP session exists on the UPF, and finally ping out through the data plane.
What you'll do
- Request PDU session establishment for DNN=internet
- Check the PFCP session on the UPF
- Verify the SMF SM context
- Ping 8.8.8.8 from the UE
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