Frame alignment technology of simple data link (SDL) protocol

摘要

As a new framing protocol in data link layer, the simple data link (SDL) protocol is quite suitable for high-speed links such as fiber because of its low implementation cost and high processing speed. Due to the variable length of the SDL frame, the implementation of the frame alignment scheme of SDL is quite different from the traditional frame alignment schemes. IETF adopted the framer algorithm in which multiple pre-synchronizers are used. In order to reduce the implemental complexity of the SDL framer, a modified SDL frame alignment scheme is introduced and the performance is analyzed in this paper.