Description of the menu options
ELSA LANCOM DSL/10 Office
R35
Operating
This option allows you to activate or deactivate the IP router module. In the default
configuration, the IP router module is activated.
Activating the IP router module also activates the TCP/IP module.
IP-routing-table
The routing table can contain a maximum of 128 entries of destination network
addresses or direct IP addresses with netmasks, and the names or IP addresses of other
local routers. Alternatively, you can enter a setting by means of which packets to specific
destination IP addresses are discarded and are not answered by proxy ARP. This is done
by entering 0.0.0.0 for the name of the responsible router.
The 'Masquerade' field indicates whether the route should be masked or not. The
following options are offered here:
K
On
: IP masquerading is switched on and functions with dynamic assignment of the
IP address by the remote station. In this procedure the router queries the IP address
'0.0.0.0' at the remote station and is assigned a random IP address by the remote
station, which is then used for further processing.
K
Off
: Masquerading is switched off.
K
Static
: IP masquerading is switched on and functions with assignment of a static
IP address previously assigned by the remote station. In this procedure the router
queries the IP address entered under 'Setup/TCP-IP-module' at the remote station
and is assigned this address by the remote station. Use this setting when the
remote station (e.g. your Internet provider) has assigned you a fixed IP address in the
access data. Of course, this procedure will only function when this address has also
been entered in the router as the IP address.
The IP routing table is generally sorted as shown below:
K
The longest network mask is placed on top.
K
For network masks of equal length, the one with the smallest IP address is placed
on top.
In order to identify the correct remote station, the router searches the routing table from
top to bottom using the destination IP address received. If a matching entry is found, the
router name found is used for establishing the connection.
Address ranges that are prohibited in the Internet are excluded from transmission by
preset entries in the IP routing table (the router name 0.0.0.0 means that packets to these
addresses are not transmitted). The IP routing table below is provided by way of example
and also shows the default settings:
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