NPort IA5000A Series
Web Console Configuration
5-7
IP address
Setting
Factory Default
Necessity
E.g., 192.168.1.1 (IP
addresses in the form
x.x.x.0 and x.x.x.255
are invalid.)
192.168.127.254
Required
An IP address is a number assigned to a network device (such as a computer), which works as a permanent
address on the network. Computers use IP addresses to identify and talk to each other over the network.
Choose a proper IP address that is unique and valid in your network environment.
Netmask
Setting
Factory Default
Necessity
E.g., 255.255.255.0
255.255.255.0
Required
A subnet mask represents all the network hosts at one geographic location, such as all the hosts in a building
or on the same local area network. When a packet is sent out over the network, the NPort IA5000A will use the
subnet mask to check whether the desired TCP/IP host specified in the packet is on the local network segment.
If the address is on the same network segment as the NPort IA5000A, a connection is established directly from
the NPort IA5000A. Otherwise, the connection will be established through the given default gateway.
Gateway
Setting
Factory Default
Necessity
E.g., 192.168.1.1
None
Optional
A network gateway acts as an entrance to another network. Usually, the computers that control the traffic
within the network or at the local Internet service provider are gateway nodes. The NPort IA5000A needs to
know the IP address of the default gateway computer in order to communicate with hosts outside the local
network environment. To obtain correct gateway IP address information, consult your network administrator.
IP configuration
Setting
Factory Default
Necessity
Static, DHCP,
DHCP/BOOTP, BOOTP
Static
Required
ATTENTION
In Dynamic IP environments, the firmware will retry every 30 seconds, up to three times, until network
settings are assigned by the DHCP or BOOTP server. The timeout for each try increases from one second, to
three seconds, then to give seconds.
If the DHCP/BOOTP server is unavailable, the firmware will use the default IP address (192.168.127.254),
metmask, and gateway as IP settings.
DNS server 1/DNS server 2
Setting
Factory Default
Necessity
E.g., 192.168.1.1
(IP addresses in the
form of x.x.x.0 and
x.x.x.255 are invalid.)
None
Optional
When a user wishes to visit a website, the computer will request a Domain Name System (DNS) server for the
website’s correct IP address, and then the computer uses the response to connect to the web server. DNS is
how Internet domain names are identified and translated into IP addresses. A domain name is an alphanumeric
name, such as moxa.com, which makes it easier for people to remember. A DNS server is a host that translates
this kind of text-based domain name into numeric IP address to be used for establishing a TCP/IP connection.
In order to use the NPort IA5000A’s DNS feature, you need to configure the DNS server. Doing so allows the
NPort IA5000A to use a host’s domain name to access the host. The NPort IA5000A provides DNS server 1 and
