Double stack compatible router searching device supporting access control listing function on core routers

Abstract

This invention relates to core router supportive visit and control sequence double shed compatible router finding device, which belongs to Internet core router hardware technique field. The invention is characterized by comprising package pre-process circuit element and parallel CAM and SRAM and forms one router and ACL list through TCAM system and supports the list items dynamic alignment. The package pre-process circuit elements receive the data package and process them and extract needed information and ACL filtered information and send to the TCAM system and decide package process means according to the requirement results.

Description

technical field

[0001] A dual-stack route finder with access control list function in a core router belongs to the technical field of the Internet backbone network core router. Background technique

[0002] Today's high-end routers on the market are basically route finders implemented using network processing chips and TCAM. The specific implementation methods of each manufacturer are different. Some use custom-made ASIC chips, some use NP chips, and some use FPGAs. For example, Harbor Company's NetHammerG series routers are implemented using NP combined with TCAM technology, and TCAM chips provide 9M capacity.

[0003] FPGA (Field Programmable Gate Array) is a large-scale programmable digital integrated circuit device that began to be used in the late 1980s. It makes full use of computer-aided design technology for device development and application. With the help of computers, users can not only design ASIC chips by themselves, but also perform function simulation and ...

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