Lancom Systems 821 - Manual (Page 37)

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN
̈ Chapter 3: Basic configuration
37
EN
Section ’TCP/IP settings to workstation PCs’ auf Seite 41 will describe
the settings required for the individual workstations in the LAN.
3.3 Instructions for WEBconfig
To configure the router with WEBconfig you must know how to address it in
the LAN. The reaction of the devices, as well as their accessibility for configu-
ration via web browser is dependent on whether a DHCP server and a DNS
server are already active in the LAN, and whether these two server processes
exchange the assignment of IP addresses to symbolic names within the LAN
between each other.
After powered on, unconfigured LANCOM devices check first, whether a DHCP
server is already active in the LAN. Dependent on the situation, the device is
able to switch on its own DHCP server or, alternatively, to activate its DHCP
client mode. In this second operating mode, the device itself can obtain an IP
address from a DHCP server already existing in the LAN.
Network without DHCP server
In a network without DHCP server, unconfigured LANCOM devices activate
their own DHCP server service after starting, and assign appropriate IP
addresses and gateway information to the other workstations within the LAN,
provided that the workstations are set to obtain their IP address automatically
(auto-DHCP). In this constellation, the device can be accessed with any web
browser from each PC with activated auto-DHCP function through the name
LANCOM or by its IP address 172.23.56.254.
If the configuration PC does not obtain its IP address from the LANCOM DHCP
server, figure out the current IP address of this PC (with Start
̈ Execute ̈
cmd and command ipconfig at the prompt under Windows 2000 or Windows
XP, with Start
̈
Execute
̈
cmd and the command winipcfg at the prompt
under Windows Me and Windows 9x, or with the command ifconfig on the
console under Linux). In this case, the LANCOM is reachable under the IP