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Basic CEF question

Can someone explain how exactly CEF reduces the work on the CPU when the CEF Adjacency and FIB both reside in the Route Processor just like the Route table? This link doesn't exactly say how the CPU load is reduced. http://www.cisco.com/en/US/docs/ios/12_2/switch/configuration/guide/xcfcef.html#wp1000998

TIA.

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Super Bronze

Re: Basic CEF question

CEF appears to accomplish packet forwarding in more efficient manner by reducing both the CPU work involved in forwarding a packet, and by reducing the CPU work keeping various caches current. You might want to read http://www.cisco.com/en/US/tech/tk827/tk831/technologies_white_paper09186a00800a62d9.shtml

1 REPLY
Super Bronze

Re: Basic CEF question

CEF appears to accomplish packet forwarding in more efficient manner by reducing both the CPU work involved in forwarding a packet, and by reducing the CPU work keeping various caches current. You might want to read http://www.cisco.com/en/US/tech/tk827/tk831/technologies_white_paper09186a00800a62d9.shtml

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