IP Address Assignment
ese are the following types of IP address assignment.
Static IP address:
Assign the predetermined IP address to the printer (host) manually.
e information to connect to the network (subnet mask, default gateway, DNS server and so on) need to be set
manually.
e
IP address does not change even when the device is turned
o,
so this is useful when you want to manage
devices with an environment where you cannot change the IP address or you want to manage devices using the IP
address. We recommend settings to the printer, server, etc. that many computers access. Also, when using security
features such as IPsec / IP
ltering,
assign a
xed
IP address so that the IP address does not change.
Automatic assignment by using DHCP function (dynamic IP addres):
Assign the IP address automatically to the printer (host) by using the DHCP function of the DHCP server or
router.
e information to connect to the network (subnet mask, default gateway, DNS server and so on) is set
automatically, so you can easily connect the device to the network.
If the device or the router is turned o, or depending on the DHCP server settings, IP address may change when
re-connecting.
We recommend managing devices other than the IP address and communicating with protocols that can follow
the IP address.
Note:
When you use the IP address reservation function of the DHCP, you can assign the same IP address to the devices at any
time.
DNS Server and Proxy Server
e
DNS server has a host name, domain name of the email address, etc. in association with the IP address
information.
Communication is impossible if the other party is described by host name, domain name, etc. when the computer
or the printer performs IP communication.
Queries the DNS server for that information and gets the IP address of the other party. is process is called name
resolution.
erefore,
the devices such as computers and printers can communicate using the IP address.
Name resolution is necessary for the printer to communicate using the email function or Internet connection
function.
When you use those functions, make the DNS server settings.
When you assign the printer's IP address by using the DHCP function of the DHCP server or router, it is
automatically set.
e proxy server is placed at the gateway between the network and the Internet, and it communicates to the
computer, printer, and Internet (opposite server) on behalf of each of them. e opposite server communicates
only to the proxy server. erefore, printer information such as the IP address and port number cannot be read
and increased security is expected.
When you connect to the Internet via a proxy server, congure the proxy server on the printer.
Administrator's Guide
Network Connection
19
