Least connection means that whichever server has least connection would get the next connection. The load depends upon the session persistence too. If server A has 10 and server B has 15, let's say server A users , 5 of them decide to close the connection but none on server B. Now you have server A 5 connections and server B has 15. Next connection coming will go to server A. But there can be mismatch in the number of active connections.
In theory round robin should work fine but in real world you will never have exact numbers on both servers. Weighted should be should when you know that one server can handle more connection than the other and you explicitly tell the CSS to send more towards it. Normally least connection should be okay. I don't see any reason for CSS to send more load to one server always. Does your customer see one SAME server getting more connections always? How much is the difference here? Also, note that once the connection is sent to one server, all the traffic coming from that same IP would be sent to the same server since it will match the flow(unless the flow is cleared due to client closing the connection or timed out. I think in your case customer has IP based sticky. Can you double check that? It might be a possibility there is lot of connections coming from one IP address and always going to the same server.
How does he know that he is getting 12 connections/sec on one and 90 on another? Can you check show flows? With least connection algorithm, the server with less connections will get the connections mostly. So if one server has less connections, it will get more connections per second. Now if the traffic coming matches the existing flows, then they will go back to the same server.
Can you get me the output of "show service <service name> summary"? Please do it for both the servers. I need to see how many connections are there.
Can you also get complete show flows output as well?
Introduction This article will help you understand the steps on how to
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Introduction This article will help you understand and educate the
customer on how to clear their "expired licenses"
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==================== VIC FNIC driver does not support Virtual Volumes (
second level LUN ID ) An enhancement request has been created to track
this feature - CSCux64473 UPDATE - 12-14-2016 We made some traction on
the enhancement request - The Fix is in t...