Router hardware design guide, where i can get help??

hi everyone,
    i am a beginner for this ietf. i am now interested in router hardware 
design, but i need help.

     For better performance, i have to use ASICs in the router as more as 
possible. How can i design a router which will be both best performance and 
scalable for the future?? is there any information such as design-check-lists i 
can get form the Internet?? Thank you for your help.

    Thank you very much!





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