D-Link DGS-3120-24TC Product Manual - Page 29
Command Logging Settings, Stacking, System Configuration, Apply, Duplex Chain, Duplex Ring - d link firmware
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xStack® DGS-3120 Series Managed Switch Web UI Reference Guide Command Logging Settings This window is used to enable or disable the command logging settings. To view this window, click System Configuration > Command Logging Settings, as shown below: Figure 2-23 Command Logging Settings window The fields that can be configured are described below: Parameter Description Command Logging State Use the radio buttons to enable or disable the function. Click the Apply button to accept the changes made. NOTE: When the switch is under the booting procedure, all configuration commands will not be logged. When the user uses AAA authentication to logged in, the user name should not be changed if the user has used the Enable Admin function to replace its privilege. Stacking From firmware release v1.00 of this Switch, the Switch now supports switch stacking, where a set of six switches can be combined to be managed by one IP address through Telnet, the GUI interface (web), the console port or through SNMP. Each switch of this series has two stacking ports located at the rear of the device, which can be used to connect other devices and make them stack together. After adding these stacking ports, the user may connect these ports together using copper cables (also sold separately) in one of two possible topologies. Duplex Chain - As shown in Figure 2-24, The Duplex Chain topology stacks switches together in a chain-link format. Using this method, data transfer is only possible in one direction and if there is a break in the chain, then data transfer will obviously be affected. Duplex Ring - As shown in Figure 2-25, the Duplex Ring stacks switches in a ring or circle format where data can be transferred in two directions. This topology is very resilient due to the fact that if there is a break in the ring, data can still be transferred through the stacking cables between switches in the stack. Figure 2-24 Switches stacked in a Duplex Chain Figure 2-25 Switches stacked in a Duplex Ring 21