User`s manual

NPort 5100 Series Web Console Configuration
5-6
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 then the computer uses 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 5100’s DNS feature, you need to configure the DNS server. Doing so allows NPort 5100
to use a host’s domain name to access the host. NPort 5100 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 5100 plays the role of DNS client, in the sense that the NPort 5100 will actively query the DNS server for
the IP address associated with a particular domain name. NPort 5100 functions that support domain name are
Time server, Destination IP Address in TCP Client mode, Mail Server, SNMP trap server, and Auto
report to IP.
SNMP Settings
Community name
Setting Factory Default Necessity
1 to 39 characters public Optional
A community name is a plain-text password mechanism that is used to weakly authenticate queries to agents
of managed network devices.
Contact
Setting Factory Default Necessity
1 to 39 characters
(E.g., Support,
886-89191230 #300)
None Optional
The SNMP contact information usually includes an emergency contact name and telephone or pager number.
Location
Setting Factory Default Necessity
1 to 39 characters
(E.g., Floor 1, office 2)
None Optional
Specify the location string for SNMP agents such as NPort 5100. This string is usually set to the street address
where the NPort 5100 is physically located.
IP Address Report
When NPort 5100 products are used in a dynamic IP environment, users must spend more time with IP
management tasks. For example, if NPort 5100 works as a server (TCP or UDP), then the host, which acts as
a client, must know the IP address of the server. If the DHCP server assigns a new IP address to NPort 5100,
the host must have some way of determining NPort 5100’s new IP address.
NPort 5100 products help out by periodically reporting their IP address to the IP location server, in case the
dynamic IP has changed. The parameters shown below are used to configure the Auto IP report function. There
are two ways to develop an “Auto IP report Server” to receive NPort 5100’s Auto IP report.
Use Device Server Administrator’s IP Address Report function.
“Auto IP report protocol”, which can automatically receive the Auto IP report on a regular basis, is also available
to help you develop your own software. Refer to Appendix E for the “Auto IP report protocol”.