3.1.6 DNS .................................................................................................3-21 3.1.6.1 DNS Configuration....................................................................3-22 3.1.6.2 Host Configuration ....................................................................3-23 3.1.7 System File Update..........................................................................3-23 3.1.7.1 Download File...........................................................................3-24 3.1.7.2 Upload File................................................................................3-26 3.1.8 Management Access........................................................................3-27 3.1.8.1 HTTP Configuration ..................................................................3-28 3.1.8.2 HTTPS......................................................................................3-28 3.1.8.3 SSH Configuration ....................................................................3-31 3.1.8.4 Telnet Configuration .................................................................3-32 3.1.8.5 Console Port.............................................................................3-33 3.1.9 Loopback-Detection.........................................................................3-33 3.1.9.1 Global Configuration .................................................................3-33 3.1.9.2 Port Configuration.....................................................................3-34 3.1.10 EtherNet/IP ......................................................................................3-35 3.2 SNMP Manager.......................................................................................3-35 3.2.1 SNMP V1/V2....................................................................................3-35 3.2.1.1 Community Configuration .........................................................3-36 3.2.1.2 Trap Configuration ....................................................................3-37 3.2.1.3 Trap Flags.................................................................................3-38 3.2.2 SNMP V3 .........................................................................................3-39 3.2.2.1 User Configuration....................................................................3-40 3.3 Network Redundancy..............................................................................3-40 3.3.1 STP..................................................................................................3-41 3.3.1.1 STP Configuration.....................................................................3-45 3.3.1.2 CST Configuration ....................................................................3-46 3.3.1.3 CST Port Configuration.............................................................3-49 3.3.1.4 CST Port Status........................................................................3-51 3.3.1.5 MST Configuration....................................................................3-54 3.3.1.6 MST Port Status .......................................................................3-55 3.3.1.7 STP Statistics ...........................................................................3-57 3.3.2 Redundancy.....................................................................................3-58 3.3.2.1 ONE RING Configuration..........................................................3-58 3.3.2.2 ONE CHAIN Configuration........................................................3-59 3.3.2.3 ONE COUPLING Configuration................................................3-60 3.4 Virtual LANs ............................................................................................3-61 3.4.1 VLAN Configuration .........................................................................3-62 ii