Error Indication Support

When cnSGW-C receives Error Indication with PFCP Session Report Request from UPF, it responds with PFCP Session Report Response and performs as per the configuration.

For cnSGW-C, signaling is based on configuration.

  • S1U - local purge or page-ue

  • S5U - local purge or peer signaling

Error Indication Support (ERIR) Report Type

Interface

Configuration

TEID

Action

S1U

Local Purge

Default

Send SxSessionDeleteRequest to clean up on UPF

Purge locally

Dedicated

Send SxModReq (Remove Traffic Endpoint)

Purge locally

IDFT

Send SxMod (Remove IDFT Traffic Endpoint) - async

Purge Bearer locally

Page-UE

Default / Dedicated

Move UE to Idle state

Send Sx_Modification

_Request (Set FAR Action=BUFFER)

S5U

Local Purge

Default

Send SxDeleteSession

Purge locally

Dedicated

Send SxMod (Remove Traffic Endpoint)

Purge Bearer locally

Signal Peer

Default

Send SxMod (Drop) DBR/DSR, SxDelete

Dedicated

Send DBR/DBC (Async), SxMod (Remove Traffic Endpoint)