User`s manual

NPort 6000 Series User’s Manual Configuration with the Web Console
5-9
IP configuration (default=Static): You can choose from four possible IP configuration modes.
Option Description
Static
User-defined IP address, netmask, gateway.
DHCP
DHCP server-assigned IP address, netmask, gateway, DNS, and time server
DHCP/BOOTP
DHCP server-assigned IP address, netmask, gateway, DNS, and time server, or
BOOTP server-assigned IP address (if the DHCP server does not respond)
BOOTP
BOOTP server-assigned IP address
PPPoE
PPP over Ethernet, remote ISP-assigned IP address
IP Address (default=192.168.127.254): Enter the IP address that will be assigned to your NPort
6000. All ports on the NPort 6000 will share this IP address. An IP address is a number assigned to
a network device (such as a computer) as a permanent address on the network. Computers use the
IP address 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 (default=255.255.255.0): Enter the subnet mask. A subnet mask represents all of 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 6000 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 6000, a connection is established directly
from the NPort 6000. Otherwise, the connection is established through the given default gateway
Gateway: Enter the IP address of the gateway if applicable. A gateway is a network computer 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. The NPort 6000 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.
ATTENTION
In dynamic IP environments, the firmware will try to get the network settings from the DHCP or
BOOTP server 3 times every 30 seconds until network settings are assigned by the DHCP or
BOOTP server. The first try times out after 1 second, the second after 3 seconds, and the third
after 5 seconds.
If the DHCP/BOOTP server is unavailable, the firmware will use the default IP address
(192.168.127.254), netmask, and gateway settings.
DNS server 1: This is an optional field. If your network has access to a DNS server, you may enter
the DNS server’s IP address in this field. This allows the NPort 6000 to use domain names instead
of IP addresses to access hosts.
Domain Name System (DNS) is the way that Internet domain names are identified and translated
into IP addresses. A domain name is an alphanumeric name, such as www.moxa.com, that it is
usually easier to remember than the numeric IP address. A DNS server is a host that translates this
kind of text-based domain name into the actual IP address used to establish a TCP/IP connection.
When the user wants to visit a particular website, the user’s computer sends the domain name (e.g.,
www.moxa.com) to a DNS server to request that website’s numeric IP address. When the IP
address is received from the DNS server, the user’s computer uses that information to connect to
the website’s web server.