Try to modify your vpn client config to allow local lan access. You can do this from the vpn client gui, by opening up the connection profile for the university connection, and on one of the tabs there is a box to allow local lan use. Check that box. Note that the gateway you connect to can override your settings, and if that is the case there is not much you can do, except to explain your case to the univeristy tech support dept.
Let me know if this helps.