In the GUI under events.  At the CLI, you can run   GrpName>show recentevents  If you haven't already done so, install SANHQ, which is available on the EQL support website.    The array will periodically balance out connections over the available ports in the group in order to balance out the IO.  These logouts / logins are completely normal.   Typically connection drops are caused by network issues.   Can you provide some examples of the error or INFO messages?   You might want to open a support case so they can review the logs and your switch configuration.   Regards, 
Hello, we are experiencing some fun issues with iSCSI connections dropping out and in. I was wondering if there is a report or audit log that would provide this from a specfic volume? thanks!
iSCSI Reporting