Moxa Technologies 5250 User Manual

Page of 108
NPort IA5150/5250 Series User’s Manual 
Web Console Configuration 
 
5-8
IP configuration 
Setting 
Factory Default 
Necessity 
Static 
DHCP 
DHCP/BOOTP 
BOOTP 
Static Required 
 
 
ATTENTION 
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 server 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 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 IA5150/5250’s DNS feature, you need to configure the DNS server. Doing 
so allows NPort IA5150/5250 to use a host’s domain name to access the host. NPort IA5150/5250 
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 IA5150/5250 plays the role of DNS client, in the sense that the NPort IA5150/5250 will 
actively query the DNS server for the IP address associated with a particular domain name. NPort 
IA5150/5250 functions that support domain name are Time serverDestination IP Address in 
TCP Client mode
Mail ServerSNMP trap server, and Auto report to IP
SNMP Settings 
Community name 
Setting 
Factory Default 
Necessity 
1 to 39 characters 
(E.g., Support, 886-89191230 #300) 
public Optional 
A community name is a plain-text password mechanism that is used to authenticate weakly queries 
to agents of managed network devices. 
Contact 
Setting 
Factory Default 
Necessity 
1 to 39 characters 
(E.g., Support, 886-89191230 #300) 
None Optional