(from high level) - Re-adjusting the bits used for secondary purposes eased up the bit-congestions and related bottlenecks. The dark side is the decreased redundancy and consistency checks etc.

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Interview Question for Engineering at Cisco Systems:

(Gave a little high-level model of packet-forwarding and shot this question - ) What design changes would you suggest to improve the routing-speed? (After I gave out an answer - ) What else are the alternative ways (Good or Bad) of achieving this? Give the major pros and cons or those approaches.

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