APPENDIX I: T ROUBLESHOOTING 163Port AccessPROBLEM S OLUTIONPort Access Refresh The unit does not automatically refresh the Port Access List. It is refreshedonly when the user clicks on the [Port Access] button, therefore, it ispossible that a user will have permissions revoked and these changes willnot be visible on the port access screen until the [Port Access] button isactivated.A window will appear indicating that permission is no longer allowed tothis port.Whenever possible, it is recommended that Administrators not change portaccess rights to a user who is already logged in to the unit.UpgradePROBLEM S OLUTIONFTP - Server Unreachable Should the FTP server specified in the upgrade panel be unreachable orincorrect, the upgrade process will halt until a response is received fromthe FTP server or until a timeout occurs.Please wait and allow the FTP Server Unreachable message to appear.FTP - File Not Found The unit requires a package of upgrade files to be in the directoryspecified by the upgrade path. This package must have all included filesand an upgrade.cnf file. Should this file not exist, or if the contents of thefile are not in the indicated places, the File Not Found message willappear.Verify that the upgrade package is in the correct directory and confirm theupgrade path and IP address of the FTP server.If the upgrade still fails, reinstall the upgrade package and begin again.ModemPROBLEM S OLUTIONLogin Failure The unit supports Web-browser access through the modem at connectionspeeds of 28.8K bps or greater. Should the baud rate be insufficient, theuser will be unable to log on to the unit via the modem.28.8K bps minimum connection speed is recommended for browser-basedmodem authentications (login). For CLI-based access, using SSH orTelnet, speed as low as 9600bps is adequate.
