Packet processing apparatus for realizing wire-speed, and method thereof

Abstract

Provided are a packet processing apparatus for realizing a wire-speed, and a method thereof. The packet processing apparatus realizes a wire-speed by making an inputted packet be processed in another packet processing apparatus instead of processing the inputted packet for itself. The packet processing apparatus for realizing a wire-speed by having an inputted packet processed in a packet processor of another packet processing apparatus by making an inputted packet detour a packet processor into a detour path, includes: a packet classifier for classifying and storing the inputted packet in a multi-queue based on a priority; a queue manager for including the multi-queue, determining a detour packet among packets stored in the multi-queue and marking the packet as a detour packet; and a packet scheduler for transmitting the packet designated as the detour packet to the detour path. The apparatus is used for a packet communication system.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a packet processing apparatus for realizing a wire-speed, and a method thereof; and, more particularly, to a packet processing apparatus for performing a packet process by using not only resources within the corresponding packet processing apparatus, which used to be used in a conventional technology but also resources of another available packet processing apparatus in a packet communication system. DESCRIPTION OF RELATED ART [0002] A transmitting system and a receiving system of a packet communication system include a plurality of line cards and more than one port is arranged in each line card. Herein, a port of the transmitting system and a port of the receiving system are connected and the transmitting system transmits a packet to a receiving port of the receiving system at a predetermined maximum speed through a transmitting port whenever a packet to be transmitted is generated. The speed is called a wire-speed, whi...

AI Technical Summary

Problems solved by technology

Although the receiving system should process all packet transmitted to the wire-speed, there is a case that some packets cannot be processed.

This is because the line card of the receiving system may not process all packets can be generated.

Therefore, when a speed for filling the packet in the queue is slower than a speed for processing the packet in the packet processing block, the queue is gradually filled with the packet and the packets entering the queue after the queue is filled with the packet are destroyed since there is no room for the packets to be kept.

That is, there is a problem that a case that the packet is not processed in the wire-speed.

Generally, it takes a long time to process a complicated packet and a comparatively short time to process a simple packet.

However, selecting the high-performance processor to reduce the packet loss has a problem that the cost is high.

However, some packet process functions can be processed by using software since processing all parts of an option header of the packet by the hardware method does not bring any profit by making a hardware logic complicate and raising a cost.

Accordingly, delay can be caused in a process of a specific packet.

When the delay occurs frequently, the delays of the packet process are accumulated and the queue is filled with the packets, and eventually this causes the packet loss.

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