Content for TS 24.302 Word version: 18.0.0
7 Tunnel management procedures
7.1 General
7.2 UE procedures
7.2.1 Selection of the ePDG
7.2.1A Selection of the ePDG for emergency bearer services
7.2.2 Tunnel establishment
7.2.2A Liveness check procedure
7.2.2B Handling of NBIFOM
7.2.2C Rekeying procedure
7.2.2D NAT keep alive procedure
7.2.3 Tunnel modification
7.2.4 Tunnel disconnection
7.2.5 Emergency session establishment
7.2.6 Mobile identity signaling
7.2.7 IKEv2 multiple bearer PDN connectivity
7.3 3GPP AAA server procedures
7.4 ePDG procedures
7.4.1 Tunnel establishment
7.4.1A Liveness check
7.4.1B Handling of NBIFOM
7.4.1C Handling of N1 mode support
7.4.2 Tunnel modification
7.4.3 Tunnel disconnection
7.4.4 Emergency session establishment
7.4.5 Mobile identity signaling
7.4.6 IKEv2 multiple bearer PDN connectivity
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7 Tunnel management procedures p. 75
7.1 General p. 75
7.2 UE procedures p. 75
7.2.1 Selection of the ePDG p. 75
7.2.1.1 General |R13| p. 75
7.2.1.2 Determination of the country the UE is located in |R13| p. 76
7.2.1.3 Handling of ePDG selection based on the country the UE is located in |R13| p. 76
7.2.1.4 Determine if the visited country mandates the selection of ePDG in this country |R13| p. 78
7.2.1A Selection of the ePDG for emergency bearer services |R13| p. 79
7.2.2 Tunnel establishment p. 79
7.2.2.1 Tunnel establishment accepted by the network |R13| p. 79
7.2.2.2 Tunnel establishment not accepted by the network |R13| p. 82
7.2.2A Liveness check procedure |R13| p. 84
7.2.2B Handling of NBIFOM |R13| p. 84
7.2.2C Rekeying procedure |R14| p. 84
7.2.2D NAT keep alive procedure |R14| p. 84
7.2.3 Tunnel modification p. 84
7.2.3.1 UE-initiated modification |R13| p. 84
7.2.3.2 UE behaviour towards ePDG initiated modification |R13| p. 85
7.2.4 Tunnel disconnection p. 85
7.2.4.1 UE initiated disconnection p. 85
7.2.4.2 UE behaviour towards ePDG initiated disconnection p. 85
7.2.4.3 Local tunnel disconnection initiated from 3GPP access |R13| p. 86
7.2.5 Emergency session establishment |R13| p. 86
7.2.6 Mobile identity signaling |R13| p. 88
7.2.7 IKEv2 multiple bearer PDN connectivity |R15| p. 88
7.2.7.1 General p. 88
7.2.7.2 Maintained information p. 88
7.2.7.3 Control plane procedures p. 89
7.2.7.3.1 General p. 89
7.2.7.3.2 Establishment of IKEv2 SA and initial IPSec ESP tunnel p. 89
7.2.7.3.3 Establishment of an additional IPSec ESP tunnel p. 89
7.2.7.3.4 Release of an additional IPSec ESP tunnel p. 90
7.2.7.3.5 Modification of an IPSec ESP tunnel due to change of EPS QoS and TFT p. 90
7.2.7.3.6 ePDG initiated IPSec ESP tunnel rekeying p. 92
7.2.7.3.7 UE initiated IPSec ESP tunnel rekeying p. 92
7.2.7.4 User plane procedures p. 92
7.2.7.4.1 General p. 92
7.2.7.4.2 Uplink IP packet handling p. 93
7.3 3GPP AAA server procedures p. 93
7.4 ePDG procedures p. 93
7.4.1 Tunnel establishment p. 93
7.4.1.1 Tunnel establishment accepted by the network |R13| p. 93
7.4.1.2 Tunnel establishment not accepted by the network |R13| p. 95
7.4.1A Liveness check |R13| p. 96
7.4.1B Handling of NBIFOM |R13| p. 96
7.4.1C Handling of N1 mode support |R15| p. 96
7.4.2 Tunnel modification p. 97
7.4.2.1 ePDG-initiated modification |R13| p. 97
7.4.2.2 ePDG behaviour towards UE-initiated modification |R13| p. 97
7.4.3 Tunnel disconnection p. 97
7.4.3.1 ePDG initiated disconnection p. 97
7.4.3.2 ePDG behaviour towards UE initiated disconnection p. 98
7.4.3.3 Local tunnel disconnection initiated by PGW |R13| p. 98
7.4.4 Emergency session establishment |R13| p. 98
7.4.5 Mobile identity signaling |R13| p. 99
7.4.6 IKEv2 multiple bearer PDN connectivity |R15| p. 100
7.4.6.1 General p. 100
7.4.6.2 Maintained information p. 100
7.4.6.3 Control plane procedures p. 100
7.4.6.3.1 General p. 100
7.4.6.3.2 Establishment of IKEv2 SA and initial IPSec ESP tunnel p. 100
7.4.6.3.3 Establishment of an additional IPSec ESP tunnel p. 100
7.4.6.3.4 Release of an additional IPSec ESP tunnel p. 101
7.4.6.3.5 Modification of an IPSec ESP tunnel due to change of EPS QoS and TFT p. 101
7.4.6.3.6 ePDG initiated IPSec ESP tunnel rekeying p. 101
7.4.6.3.7 UE initiated IPSec ESP tunnel rekeying p. 102
7.4.6.4 User plane procedures p. 102
7.4.6.4.1 General p. 102
7.4.6.4.2 Downlink IP packet handling p. 102
7.4.6.4.3 Uplink IP packet handling p. 102
