DGS-3130 Series Layer 3 Stackable Managed Switch Web UI Reference Guide 
92 
D-Link Discovery Protocol 
This window is used to display and configure the D-Link Discovery Protocol (DDP) settings. 
 
To view the following window, click Management > D-Link Discovery Protocol, as shown below: 
 
Figure 4-84 D-Link Discovery Protocol Window 
 
The fields that can be configured in D-Link Discovery Protocol are described below: 
Parameter  Description 
D-Link Discovery Protocol 
State 
Select to globally enable or disable the DDP feature here. 
Report Timer 
Select the report timer value here. This is used to configure interval between 
two consecutive DDP report messages. Options to choose from are 30, 60, 90, 
120 seconds, or Never. Selecting Never instructs the Switch to stop sending 
report messages. 
Click the Apply button to accept the changes made. 
 
The fields that can be configured in DDP Port Settings are described below: 
Parameter  Description 
Unit  Select the Switch unit that will be used for this configuration here. 
From Port - To Port  Select the range of ports that will be used for this configuration here. 
State  Select to enable or disable the DDP feature on the specified port(s) here. 
Click the Apply button to accept the changes made. 
 
SMTP Settings 
This window is used to display and configure the Simple Mail Transfer Protocol (SMTP) settings.