Extreme Networks ESX Port Grouping

By default if you create a port group on an Extreme switch it is layer 2. If you then create a port group in ESX or a vswitch and choose IP hash for load balancing, it wont work properly. You need to change the port grouping on the switch to L3_L4.

The same applies to a Netapp dynamic VIF as Netapp uses IP load balancing as well.