I believe CEF is the best switching methods to run in any switch.
CEF offers the following benefits:
Improved performanceCEF is less CPU-intensive than fast switching route caching. More CPU processing power can be dedicated to Layer 3 services such as quality of service (QoS) and encryption.
ScalabilityCEF offers full switching capacity at each line card when distributed CEF (dCEF) mode is active.
ResilienceCEF offers unprecedented level of switching consistency and stability in large dynamic networks. In dynamic networks, fast switching cache entries are frequently invalidated due to routing changes. These changes can cause traffic to be process switched using the routing table, rather than fast switched using the route cache. Because the Forwarding Information Base (FIB) lookup table contains all known routes that exist in the routing table, it eliminates route cache maintenance and the fast switch/process switch forwarding scenario. CEF can switch traffic more efficiently than typical demand caching schemes.
Although you can use CEF in any part of a network, it is designed for high-performance, highly resilient Layer 3 IP backbone switching.
So, I guess it wont hurt enabling it on your switches.
Thanks for the explanation. I want enable it on Catalysty 6509 "core router running hybrid mode" and on all Catalyst 4507 "Server Farm switches".
1) the command to enable it on Catalyst 6509 and 4507 have any options "accounting, distributed, linecard, load-sharing, table and traffic-statistics". Which one I need to choose that fit in our environment.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
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