Section: 4.3.3 Packet routing and transfer functions 4.3.3.1 General
Content: A route is an ordered list of nodes used for the transfer of packets within and between the PLMN(s). Each route consists of the originating node, zero or more relay nodes and the destination node. Routing is the process of determining and using, in accordance with a set of rules, the route for transmission of a message within and between the PLMN(s). The EPS is an IP network and uses the standard routing and transport mechanisms of the underlying IP network. The Maximum Transfer Unit (MTU) size considerations in clause 9.3 of TS 23.060[ General Packet Radio Service (GPRS); Service description; Stage 2 ]  [7] are also applicable to EPS.