D-Link DGS-3630-52PC Quick installation Guide - Page 27

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide Loopback Test This window is used to display and configure the loopback settings of the physical port interfaces and to perform loopback tests. To view the following window, click System > Loopback Test, as shown below: Figure 3-11 Loopback Settings Window The fields that can be configured are described below: Parameter Unit From Port - To Port Loopback Mode Description Select the Switch unit that will be used for this configuration here. Select the appropriate port range used for the configuration here. Select the loopback mode here. Options to choose from are: • None - Specifies not to enable the loopback mode. • Internal MAC - Specifies the internal loopback mode at the MAC layer. • Internal PHY Default - Specifies the internal loopback mode at the PHY layer to test the default medium. • Internal PHY Copper - Specifies the internal loopback mode at the PHY layer to test the copper medium. • Internal PHY Fiber - Specifies the internal loopback mode at the PHY layer to test the fiber medium. • External MAC - Specifies the external loopback mode at the MAC layer. • External PHY Default - Specifies the external loopback mode at the PHY layer to test the default medium. • External PHY Copper - Specifies the external loopback mode at the PHY layer to test the copper medium. • External PHY Fiber - Specifies the external loopback mode at the PHY layer to test the fiber medium. Click the Apply button to accept the changes made. 15