Removing Sx Association with an Offline UPF
This section describes the sequence of operation for removing association with an offline UPF.
-
Set UPF as offline in profile-network-element-upf configuration.
SMF stops selecting and associating dynamic IPs to the specific UPF for new sessions.
-
NodeMgr receives configuration change notification about an offline UPF.
SMF stops selecting and associating static IPs to the specific UPF for new sessions or associations.
-
NodeMgr acknowledges the heart-beat messages for an already associated UPF.
-
NodeMgr acknowledges the N4 association update from the UPF with release indication.
This step does not impact the static and dynamic chunk allocations for IPAM.
The IPAM module is unaware of the offline status for the UPF. It might include the offline UPF to add new IP pool or addr-ranges.