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services such as Network Time Protocol (NTP) server, you will need to configure the DNS server in order to be able to resolve the host
name of the NTP server. The detailed description of the configuration parameters on this interface is shown in table 8.
Fig. 18 Network web page
Table 8 Network configuration list
Click the drop-down menu to select the IP Address Setting mode: Static or DHCP. If you choose DHCP,
the rest of the options will be greyed out or disabled.
Click the drop-down menu to select the DNS mode: auto or manual. If you choose auto, the DNS options
will be greyed out or disabled.
IP address is a 32-bit address assigned to devices connected to the Internet. The IP address consists of
two fields: the network number field (Net-id) and host number field (host-id). In order to facilitate the
management of IP addresses,IP addresses are divided into five categories: Class A, B, and C addresses
are unicast addresses, Class D addresses are multicast addresses, Class E addresses are reserved
addresses for future special purposes. The IP addresses currently in large numbers belong to three types
of addresses: A, B, and C.
The mask is a 32-bit number corresponding to an IP address. Some of these numbers are 1, and the
others are 0. The mask can divide the IP address into two parts: the subnet address and the host address.
The part of the IP address corresponding to the 1 bit in the mask is the subnet address, and the other bits
are the host address. The mask for class A addresses is 255.0.0.0, the mask for class B addresses is
255.255.0.0, the mask for class C addresses is 255.255.255.0.
The default gateway in the host is usually called the default route. The default route (Default route) is the
route chosen by the router when no other route exists for the destination address in the IP packet. All
packets whose destination is not in the router's routing table will use the default route.
The IP address of the DNS server. DNS Server part is where you can specify the IP Address of your
Preferred DNS (Domain Name Server) and Alternate DNS. When the device uses a static IP address, the
user is required to fill in this item, 8.8.8.8(Google) will be a good choice. If a specific DNS server is not
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