Draytek Vigor2100V User Manual page 22

Vigor2100V series
WAN IP address: this is the IP address assigned by your ISP for your router.
You shall specify the IP address of the router here. e.g. 172.16.2.84
Subnet Mask: an address code that determines the size of the network; this is
the subnet mask of the router, when seen by external users on the Internet
(including your ISP). The subnet mask is provided by your ISP. e.g.
255.255.255.0
Gateway IP Address: an IP address forwards Internet traffic from your local
area network (LAN) . e.g. 172.16.2.5
DNS Server IP address: you must specify DNS server IP address here if your
ISP has the said address. If you do not specify it, the router will automatically
apply default DNS Server IP address: 194.109.6.66 to this field.
DHCP
Some Cable ISPs require user to provide or specify MAC address for access
authentication purpose. Your can either manually enter the MAC address in
the MAC Address fields or clone from your network adapter.
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