Draytek Vigor 2925 Series User Manual page 183

IP Address Assignment
Method(IPCP)
WAN IP Network
Settings
After finishing all the settings here, please click OK to activate them.
Idle Timeout - Set the timeout for breaking down the
Internet after passing through the time without any action.
WAN IP Alias - If you have multiple public IP addresses
and would like to utilize them on the WAN interface, please
use WAN IP Alias. You can set up to 8 public IP addresses
other than the current one you are using.
Fixed IP - Usually ISP dynamically assigns IP address to
you each time you connect to it and request. In some case,
your ISP provides service to always assign you the same IP
address whenever you request. In this case, you can fill in
this IP address in the Fixed IP field. Please contact your ISP
before you want to use this function. Click Yes to use this
function and type in a fixed IP address in the box.
Fixed IP Address -Type a fixed IP address.
Obtain an IP address automatically – Click this button to
obtain the IP address automatically.
Specify an IP address – Click this radio button to specify
some data.

IP Address – Type the IP address.

Subnet Mask – Type the subnet mask.
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Vigor2925 Series User's Guide