5.10 Error Indication Handling

29.2443GPPInterface between the Control Plane and the User Plane nodesRelease 17TS

Upon receipt of a GTP-U Error Indication message, the UP function:

– shall identify the related PFCP session for which the message is received; and

– shall initiate a PFCP Session Report procedure, towards the CP function controlling this PFCP session, to send an Error Indication Report including the remote F-TEID signalled in the GTP-U Peer Address IE and the Tunnel Endpoint Identifier Data I IE of the GTP-U Error Indication (see clause 7.3.1 of 3GPP TS 29.281 [3]).

For EPC, upon receipt of an Error Indication Report, the CP function shall then identify the bearer for which the Error Indication Report is received using the remote F-TEID included in the report and proceed as specified in clauses 21.7 and 21.8 of 3GPP TS 23.007 [24], i.e.:

– modify the PFCP session to instruct the UP function to buffer DL packets;

– modify the PFCP session to delete the PDR and FAR, when having to delete a bearer; or

– delete the PFCP session, when having to delete the PDN connection.

For 5GC, upon receipt of an Error Indication Report, the SMF shall proceed as specified in clause 5.3 of 3GPP TS 23.527 [40].