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F5 Viprion bit size hash bit size in hardware for LACP

Marvin
Cirrostratus
Cirrostratus

Dear all,

 

For optimal traffic distribution accross links inside a Trunk / LACP port channel it is important to know what bit size is used built inside the F5 hardware

 

As explained here a comparison between 3-bit and 8-bit where the first one is optimized for 2, 4 or 8 links the the 8-bit can be used for almost equal link distribution when using 6 links inside the Trunk.

 

https://www.packetmischief.ca/2012/07/24/doing-etherchannel-over-3-5-6-and-7-link-bundles/

 

I suppose the F5 hardware uses 3-bit hashing size built inside the Viprion hardware, but can someone confirm? Is it perhaps adjustable by perhaps using a database variable to switch between 3-bit and 8-bit?

 

The following article explains the hashing methods but it does not provide information about bit-size.

 

https://support.f5.com/csp/article/K13562

 

 

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