Ursalink UR51 Industrial Cellular Router User Guide
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<strong>UR51</strong> <strong>User</strong> <strong>Guide</strong><br />
4.2.4.2 DHCP Relay<br />
The <strong>UR51</strong> can be set as DHCP Relay to provide a relay tunnel to solve the problem that DHCP<br />
Client and DHCP Server are not in the same subnet.<br />
Figure 4-2-4-2<br />
DHCP Relay<br />
Item<br />
Enable<br />
DHCP Server<br />
Description<br />
Enable or disable DHCP relay.<br />
Set DHCP server, up to 10 servers can be configured; separate them<br />
by blank space or ",".<br />
Table 4-2-4-2 DHCP Relay Parameters<br />
4.2.5 DDNS<br />
Dynamic DNS (DDNS) is a method that automatically updates a name server in the Domain<br />
Name System, which allows user to alias a dynamic IP address to a static domain name.<br />
DDNS serves as a client tool and needs to coordinate with DDNS server. Before starting<br />
configuration, user shall register on a website of proper domain name provider and apply for<br />
a domain name.<br />
Figure 4-2-5-1<br />
DDNS<br />
Item<br />
Name<br />
Interface<br />
Service Type<br />
<strong>User</strong>name<br />
<strong>User</strong> ID<br />
Description<br />
Give the DDNS a descriptive name.<br />
Set interface bundled with the DDNS.<br />
Select the DDNS service provider.<br />
Enter the username for DDNS register.<br />
Enter <strong>User</strong> ID of the custom DDNS server.<br />
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