User`s manual

NPort 5600-8-DT User’s Manual General Settings
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established directly from the device server. Otherwise, the connection is established through the
gateway as specified in the “Gateway” parameter.
Gateway (default = blank): This field is for 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 device server needs to know the IP address of the default gateway computer in order to
communicate with the hosts outside the local network environment. Consult your network
administrator if you do not know how to set this parameter.
IP configuration (default = Static): This field determines how the device server’s IP address will
be assigned. Four options are available:
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
DNS server 1 (default = blank): This field is for the DNS server’s IP address, if applicable. This
allows the NPort device server 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 a
text-based domain name into an IP address in order 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.
The NPort will play the role of a DNS client, actively querying the DNS server for the IP address
associated with a particular domain name. The following device server parameters on the NPort
5600-8-DT support the use of domain names in place of IP addresses: Time Server, Destination IP
Address (in TCP Client mode), Mail Server, SNMP Trap Server, Destination Address (in Pair
Connection mode), and SMTP Server.
DNS server 2: This is field is for an alternate DNS server’s IP address, if applicable.
Community name (default = public): This optional field is for the community name, which is a
plain-text password mechanism for weak authentication of queries to agents of managed network
devices.
Contact (default = blank): This optional field is for SNMP contact information, such as an
emergency contact name and telephone or pager number.
Location (default = blank): This optional field may be used to specify the location string for
SNMP agents. This string is usually set to the street address where the NPort is physically located.