Implementing IP and Ethernet on the 4G Mobile Network delves into the 4G mobile network that allows an IP packet transmitted by a mobile to be transported to its gateway, reciprocally using the following networks: MPLS-VPN, VPLS and OTN. The mechanisms for the implementation of quality of service (QoS) on the EPS, IP, Ethernet and MPLS networks are presented, as is the security for the LTE radio interface, the NAS messages and the links of the transport (IPSec). In addition,