Re: Load balancing in routers

[Chris Woodfield <rekoil () semihuman com>]

If by "round-robin" you mean by destination only, then this is correct. However, if 
you strict per-packet load sharing regardless of flow, then CEF does have this 
capability, although the default behavior is the flow-based load sharing you describe. 

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/switch_c/xcprt2/xccefc.htm#33184

However, IIRC, code stability issues have plagued this feature in many IOS 
releases; I recall Intermedia selling a "bonded T1" product that used this feature, and 
supporting it was...not pleasant.

-C

> We used CEF in 11.x and it behaved the same way.  It was never round-robin
> in any way we could observe.

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