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Forum Discussion

f5_learner_2857's avatar
f5_learner_2857
Icon for Nimbostratus rankNimbostratus
Oct 13, 2010

Cookie Persistence and Source Address Affinity

Hello,   We are currently facing problem with equal load distribution on F5 1500 LTM.   Virtual server is configured for Cookie based persistence and the fallback method is Source Address Aff...
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nathe's avatar
nathe
Icon for Cirrocumulus rankCirrocumulus
Oct 14, 2010
Hi f5_learner

 

 

See http://devcentral.f5.com/Forums/tabid/1082223/asg/52/showtab/groupforums/afv/topic/aff/31/aft/23410/Default.aspx and sol10430.

 

 

The first post details what you're seeing the Stats page. You don't see cookie persistence records here as the info is in the cookie. The second post is in regards to uneven traffic distribution.

 

 

Also from askf5 I also read the following:

 

 

"Using Source Address Affinity as a fallback persistence method may also create the appearance that the BIG-IP system incorrectly distributes more requests to a particular server. The reason for this is that the default persistence profile and

 

the fallback profile operate simultaneously. The BIG-IP system uses the fallback persistence method when it cannot use the

 

specified default persistence profile. For example, when the client does not indicate a persistence record, the fallback

 

persistence method is consulted before making a load balancing decision."

 

 

Hope this helps.

 

N