On TCP/IP network AS/400 can be identified with its name at DNS level or host file. This error occurs when this name is used as IP address in connection parameters and is not found and associated with the right IP address.
AS/400 name, host file, DNS servers, must be checked or an IP address in xxx.xxx.xxx.xxx format must be used.
Where is the Hosts file located?
Usually in C:\WINDOWS\system32\drivers\etc repertory.
This file contains IP addresses relation to host names. Each entry must set on his proper line. The IP address must be placed in the first column, followed by the related host name. The IP address and the host name must be separated with one space at least.
Moreover, comments can be inserted on their proper lines or after computer name. They are indicated with '#' symbol.
Example:
194.206.10.1 main.as # main AS/400 server
194.206.10.2 test.as # AS/400 test server
194.206.10.100 serveur.info1
194.206.10.101 poste_x
....
DNS Server
Allows checking a DNS server address in connection network Internet (TCP/IP) Protocol properties.