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IP Configuration
Setting Factory Default Necessity
Static
DHCP
DHCP/BOOTP
BOOTP
Static Required
In Dynamic IP environments, the firmware will retry 3 times every 30 seconds until network settings
are assigned by the DHCP or BOOTP server. The Timeout for each try increases from 1 second, to 3
seconds, to 5 seconds.
If the DHCP/BOOTP Server is unavailable, the firmware will use the default IP address,
192.168.127.254, Netmask, and Gateway for IP settings.
DNS server 1 / DNS sever 2
Setting Factory Default Necessity
E.g., 192.168.1.1
(IP addresses of the form x.x.x.0 and
x.x.x.255 are invalid.)
None Optional
When the user wants to visit a particular website, the computer asks a Domain Name System (DNS)
server for the website’s correct IP address, and the computer users the response to connect to the web
server. DNS is the way that Internet domain names are identified and translated into IP addresses. A
domain name is an alphanumeric name, such as moxa.com, that it is usually easier to remember. A
DNS server is a host that translates this kind of text-based domain name into the numeric IP address
used to establish a TCP/IP connection.
In order to use NPort’s DNS feature, you need to set the IP address of the DNS server to be able to
access the host with the domain name. NPort provides DNS server 1 and DNS server 2 configuration
items to configure the IP address of the DNS server. DNS Server 2 is included for use when DNS
sever 1 is unavailable.
NPort plays the role of DNS client. Functions that support domain name in NPort are Time Sever IP
Address, TCP Client-Destination IP Address, Mail Server, SNMP Trap IP Address, and IP
Location Server.
NPort 5400 Series User’s Manual
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