Patent ID: 8160071
Filing Date: 2012-04-17
Classification: H04L

Abstract:
1. An L2/L3 packet processing apparatus for processing packets by interworking with a provider backbone bridges network (PBBN), a provider bridges network (PBN), and an Internet protocol network (IPN), the apparatus comprising: a header preprocessing unit configured to analyze an L2 header of an input packet to create a transport header and update a flag of the transport header; a packet processor unit configured to analyze an L3 header of a packet which has passed through the header preprocessing unit to generate an IP flow; a packet extension unit connected with the packet processor unit and extending a frame in order to map a packet input from the PBN or the IPN to an L2 format of the PBBN; a packet compressor unit configured to realign packets which have passed through the packet extension unit, remove an unnecessary byte, and incorporate packets; and a look-up table connected to the packet processor unit and the packet extension unit and determining an output port according to information about the input packet, wherein the header preprocessing unit comprises: