Section: 4.3.17.8a Support of PDN type Ethernet
Content: The support of Ethernet PDN type relies upon the selection of a P-GW that supports combined PGW+SMF functionality specified in TS 23.501[ System architecture for the 5G System (5GS) ]  [83], TS 23.502[ Procedures for the 5G System (5GS) ]  [84] and TS 23.503[ Policy and charging control framework for the 5G System (5GS); Stage 2 ]  [88]. This functionality may be supported by a PLMN even if it has no NG-RAN coverage, however, it does require that the subscriber has a subscription record in the 5GS UDM. This feature is described in clause 5.6.10.2 of TS 23.501[ System architecture for the 5G System (5GS) ]  [83]. For PDN connection with Ethernet PDN type, IP address allocation is not needed. In contrast to the Non-IP PDN type, EPS Dedicated Bearers are supported for the Ethernet PDN type (including the TFT as described in clause 4.7.2.1). The details about the TFT packet filter(s) are described in clause 5.7.6.3 of TS 23.501[ System architecture for the 5G System (5GS) ]  [83]. For PDN connection of Ethernet type, dynamic PCC is applied as described in clause 4.7.5 with the following differences: - Dynamic PCC specified in TS 23.503[ Policy and charging control framework for the 5G System (5GS); Stage 2 ]  [88] is applied, i.e. the PCEF interacts with the PCF using N7 interface as described in TS 23.501[ System architecture for the 5G System (5GS) ]  [83], and the PCEF does not interact with the PCRF using Gx interface as specified in TS 23.203[ Policy and charging control architecture ]  [6]. - The SDF template included in the PCC rule(s) uses Ethernet packet filter as specified in TS 23.501[ System architecture for the 5G System (5GS) ]  [83]. - The description related to IP address configuration is not applicable. Dedicated Core Network functionality (see clause 4.3.25) can be used to avoid the need for all MMEs in the PLMN to be upgraded to support Ethernet PDN Type. If the UE's attempt to use the Ethernet PDN Type is rejected by the network, the UE may attempt to gain service by requesting the Non-IP PDN type. Ethernet PDN Type is not supported in GERAN/UTRAN. If the UE only has an Ethernet PDN connection established, mobility to GERAN/UTRAN should be prevented. To do this, the MME shall indicate to the eNodeB in Handover Restriction List that GERAN/UTRAN is restricted. For PDN connection with Ethernet PDN type, mobility to Non 3GPP access to EPC is not supported.