Dhcp; Dns; Ip Address - Omega iSD-TH User Manual

3.3 DHCP

DHCP, Dynamic Host Configuration Protocol, enables computers and network devices to
receive their IP configurations from a DHCP server.
If DHCP is enabled on your iServer, as soon as the iServer that is connected to the
network is powered on, there will be an exchange of information between the iServer and
the DHCP server. As a result, the DHCP server will assign an IP address, a Gateway
address, a Subnet Mask, and a DNS address to the iServer. Note that the DHCP server
must be correctly configured to make such assignments.
If fixed or static IP address is desired, the DHCP function must be disabled.
The iServer is shipped with DHCP disabled (factory default).
The DHCP can be enabled by accessing the iServer's web server and selecting Network
menu (refer to Section 4.4.2) or by pressing and holding the two front buttons °C/°F and
TIME/IP during power-on (refer to Section 2.3).
It's very important to communicate with the network administrator in order to
understand DHCP and its existing configurations on the host server before
enabling DHCP on the iServer.
The iServer is shipped with a default static IP address of 192.168.1.200 and
Subnet Mask of 255.255.255.0.

3.4 DNS

DNS, Domain Name System, enables computers and devices to be recognized over a
network based on a specific name instead of IP addresses.
For example, instead of having to use http://192.168.1.200 (IP address), you would use
http://isdb870 or any name up to sixteen alphanumeric characters defined as a Host
Name in the iServer's web server.
The default Host Name for an iServer is "isd" followed by the last four digits of the MAC
address of that iServer unit.
On Windows servers where DHCP and DNS are separate functions it is very
important to configure the DHCP server to communicate with DNS in order for
the iServer's Host Name to correctly respond. If you cannot access the iServer
using its Host Name, please contact your network administrator to make sure
DHCP and DNS servers are linked together.
If DNS server address is setup, all Host Names reported during weblink configuration
(i.e. SMTP server IP, SNTP server IP, SNMP trap server IP, etc.) will be translated into IP
addresses.

3.5 IP Address

Every active device connected to the TCP/IP network must have a unique IP address.
This IP address is used to build a connection to the iServer.
All network devices like computers that use TCP/IP protocol to communicate with each
other should have a unique 32-bit address called IP address. The IP address is divided
into two portions, the network ID and the host ID. For instance, every computer on the
same network uses the same network ID. At the same time, all of them have different
host IDs. For more details about the IP address see Appendix B.
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