User`s manual

Web Console Configuration
Netmask
Setting Factory Default Necessity
Ex. 255.255.255.0 255.255.0.0 Required
A subnet mask represents all the network hosts at one geographic location, in one building, or on the
same local area network. When a packet is sent out over the network, the NPort will use the subnet
mask to check whether the desired TCP/IP host specified in the packet is on local network segment. If
the address is on the same network segment as the NPort, a connection established directly from the
NPort. Otherwise, the connection is established through the given default gateway.
Gateway
Setting Factory Default Necessity
Ex. 192.168.1.1 None Optional
A gateway is a network gateway that acts as an entrance to another network. Usually, the computers
that control traffic within the network or at the local Internet service provider are gateway nodes.
NPort needs to know the IP address of the default gateway computer in order to communicate with the
hosts outside the local network environment. For correct gateway IP address information, consult the
network administrator.
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.
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