The GUI of this product has been designed very well so it's user friendly as compared with other products in market at present time. It provides excellent insights into network traffic flows which helps us identify potential issues or improve our networking infrastructure. I have not found any major issue but would like to mention here about few things:- 1) This software does support IPv6 only if you are using Cisco routers2). If your router doesn't provide SNMP v3 then you can configure snmp agent manually too from command line interface (CLI), otherwise there will be some errors while connecting via CLI. 3.) You need more than one license key to use this software across different locations4.). There should be an option available where we can export data out of cleaverview and import them back again5.).