CSS 11801 and "balance aca"

[marcs]

I'd like to know if anyone can give a good definition of the Arrowpoint Caching Algorithm (ACA) used on the CSS 11000 series of content switches. There's a definition in the manual, but it's pretty basic; stating that it bases it's handling based on load and availability. I'd like to know if there are definite parameters that control this, if they're configurable, or if the algorithm itself is a corporate secret.

Thanks for any information!

[wdrootz]

Of course it will be confidential as the name indicates.

[leonel]

As to the INs and OUTs of the algorithm .... good luck ... on the other hand the following link might help answer some of your questions:

http://www.cisco.com/warp/public/117/configuring_aca.html

*As you can see there are a couple of parameters that you can manipulate.

Cheers,

Leonel

[#4]

Hi, Balance ACA will require a minimum of 300 flows per second to set up correctly and then need to average 1000 flows per second to evenly distribute load. Using this algorythm will require a consistant flow level.

ACA is optimized it for the average case performance

where the behavior is better as more flows are passed through the box.

For small numbers of flows, you might experience what appears to be

"erratic" behavior. You will see below that it is a compromise between

getting the best behavior in the long run and yet maintaining stability

and minimal sampling impact.

Hope this helped!

Jim