In this paper, we propose an approach of user traffic segregation, which uses a dedicated logical link identified by LLID to deliver specific service. Illustration and testing are given to show that providing multiple logical links per ONU is more flexible and scalable, comparing with single logical link per ONU cooperating with IEEE 802.Q/p VLAN.
As the digital network is expanding so quickly, many applications are widely used in the social living, especially wireless LAN and IP telephone. The DTE(Data Terminal Equipment) based on Ethernet are also used in many place, these equipments have low power cost, but commonly they have very high requirements in stability and reliability of power supply. This article brings forward a system solution project of long-distance centralize power supply, which can be controlled by network, according to the 802.3af standard. And also presents the key technology in this solution.