Apparatus and method for processing l2/l3 packet
AssigneeElectronics and Telecommunications Research Institute
InventorsYong Wook RA, Chang Ho Choi, Tae Kyu Kang, Byung Jun Ahn
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Abstract
An L2/L3 packet processing and method are disclosed to process various Ethernet packets by interworking with a PBBN (Provider Backbone Bridges Network), a PBN (Provider Bridges Network), and an IPN (Internet Protocol Network).
Claims16
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.
An L2/L3 packet processing method for processing packets by interworking with a provider backbone bridges network (PBBN), a provider bridges network (PBN), and an Internet protocol network (IPN), the method comprising:
- a header preprocessing step of analyzing an L2 header of an input packet to generate a transport header, and updating a flag of the transport header;
- a packet processing step of analyzing an L3 header of a packet which has undergone the preprocessing step to generate an IP flow;
- and
- determining an output port according to information about the input packet, and processing the IP flow.
Dependencies are inferred from the claim text.