Default Bearer with s5u as local-purge/signal-peer Call Flow

This section describes Default Bearer with s5u as local-purge/signal-peer call flow.

Default Bearer with s5u as local-purge/signal-peer Call Flow
Default Bearer with s5u as local-purge/signal-peer Call Flow Description

Step

Description

1, 2

Initial attach complete.

3, 4, 5

GTPU Error detected on UPF.

  • Sx_Session_Report_Request sent to cnSGW-C.

  • cnSGW-C responds with Sx_Session_Resport_Response.

6-11

cnSGW-C processes Session Report Request (ERIR).

If TEID is received for default bearer, submit internal transaction to clean up PDN (behavior depends on CLI configured).

CLI: sgw-profile config

If gtpuErrorInd:

s5u: signal-peer

  • Send Sx_Session_Report_Request to UPF to set (FAR ACTION=DROP).

  • Send Delete Bearer Req to MME.

  • Send Delete Session Request to PGW.

12

Send Sx_Session_Delete_Request to UPF.

13

UPF responds with Sx_Session_Delete_Response.