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William_Lampen_'s avatar
William_Lampen_
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Dec 19, 2014

Load balanced -Observed with persistence

I inherited a F5 with a VIP using Observed(members) as a load balance method. this VIP also has persistence profile with sticky Destination Address Affinity

 

I am seeing that all the traffic is only going to 1 of the servers in the pool. ( There are 3 members) is this persistence profile causes this? how to I correct it.

 

thanks and all help is appreciated.

 

-Will

 

4 Replies

  • Yes, it seems the persistence profile is directing all traffic to a single pool member. What kind of hosts are in the pool? Are they application servers the clients are connecting to or are the pool members providing network pathways (routers, firewalls)?

     

  • You'll need to change the persistence method. Destination address persistence will send all traffic for a given destination (in this case the vip) to a single pool member. You likely want to load balance clients across pool members and then have them persist to the member choosen in which case you need a persistence profile that identifies a returning client (as opposed to identifiying the destination for the traffic). Source address and http cookies are the most common methods for this type of persistence.