Sx Path Failure on UPF
This section describes the sequence of operation for Sx path failure on UPF.
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The NodeMgr initiates the subscriber clear command.
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The NodeMgr sends UnRegisterUpf to IPAM.
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IPAM releases any dynamic IP address ranges and moves it to free range list.
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IPAM retains any static IP address ranges for the UPF. Sx path failure does not impact static IP address mappings.