how to properly load balance between diffrent server farms.

lucbisson · ‎12-04-2008

Hi experts,

We are using an ACE 4710. We chose for our server farms to load balance using the least_connections predictor. it seems to work fine inside the same server farm but is it working properly between server farms? It doesn't seem because some of my real servers seems to be more loaded than others. Each server farm are using the same real servers.

Any idea about what is the problem or any suggestion regarding the best load balancing predictor we should use using this kind of configuration?

Thank's to all.

tstanik · ‎12-10-2008

The ACE uses load-balancing algorithms or predictors to determine how to balance the traffic among the devices configured in the server farms, independent of the device type. For FWLB, we recommend that you use only the hash address source and the hash address destination predictors. Using any other predictor with FWLB may fail and block traffic, especially for applications that have separate control and data channels.

Here is the configuration guide for the Cisco ACE 4700 Series Appliance Server Load-Balancing.

http://www.cisco.com/en/US/docs/app_ntwk_services/data_center_app_services/ace_appliances/vA1_7_/configuration/slb/guide/fwldbal.html