6 IP layer

37.4723GPPRelease 17Signalling transportTSW1 interface

The ng-eNB-CU and ng-eNB-DU shall support IPv6 (IETF RFC 8200 [2]) and/or IPv4 (IETF RFC 791 [3]).

The IP layer of W1-C only supports point-to-point transmission for delivering W1AP message.

The ng-eNB-CU and ng-eNB-DU shall support the Diffserv Code Point marking as described in IETF RFC 2474 [4].