D-Link DGS-3630 SERIES - Loopback Test

DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide
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Parameter Description
Maximum Receive Frame
Size
Enter the maximum receive frame size value here. This value must be between
64 and 12288 bytes. By default, this value is 1536 bytes.
Click the Apply button to accept the changes made.
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 3-10 Loopback Settings Window
The fields that can be configured are described below:
Parameter Description
Unit
Select the Switch unit that will be used for this configuration here.
From Port - To Port
Select the appropriate port range used for the configuration here.
Loopback Mode
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.