Load balancing in routers

Mon Apr 8 22:09:50 UTC 2002

>Paul's statement about CEF is interesting. It's probably the first public
>statement I've ever heard where someone was praising CEF. Usually
>discussions about CEF are accompanied by liberal amounts of swearing...

Just my anecdotal 2 cents:

2 at Cisco 4000M, 4 T1's, load balanced. 5 meg of IP traffic, no filters.

no ip cef - 90% CPU - router on its' knees
ip cef - 40% router alive and kicking

Other than the memery overhead CEF adds to BGP, CEF is painless, and 
worthwhile.