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BAT54-Rail/F..
Release
7.54
06/08
12.3
DNS
475
U General DNS forwarding
All DNS requests that cannot be resolved in another way are forwarded to a
DNS server. This DNS server is determined according to the following rules:
D Initially the router checks whether a DNS server has been entered in its
own settings. If it is successful there, it obtains the desired information
from this server. Up to two higher-level DNS servers can be specified.
D If no DNS server is entered in the router, it will attempt to reach a DNS
server over a PPP connection (e.g. from the Internet provider) to get the
IP address assigned to the name from there. This can only succeed if the
address of a DNS server is sent to the router during PPP negotiation.
D The default route is established and the DNS server searched for there if
no connection exists.
This procedure does not require you to have any knowledge of the DNS serv-
er address. Entering the Intranet address of your router as the DNS server
for the workstation computers is sufficient to enable you obtain the name as-
signment. This procedure also automatically updates the address of the DNS
server. Your local network always receives the most current information even
if, for example, the provider sending the address changes the name of his
DNS server or you change to another provider.
12.3.3 Setting up the DNS server
The settings for the DNS server are contained in the following menu or list:
Proceed as follows to set the DNS server:
V Switch the DNS server on.
LANconfig TCP/IP  Addresses  Primary DNS / Secondary DNS
WEBconfig Expert Configuration
 Setup  TCP-IP  DNS-default  DNS-backup
Terminal/Telnet
/setup/TCP-IP/DNS-default
/setup/TCP-IP/DNS-backup
Configuration tool Run/Table
LANconfig TCP/IP
 DNS
WEBconfig Expert Configuration
 Setup  DNS
Terminal/Telnet
cd /setup/DNS
WEBconfig …  Operating
Terminal/Telnet
set operating on
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