ELSA LANCOM Business LC-4X00, Руководство пользователя

Страница: 125 / 276

Workshop
ELSA LANCOM Business
115
management function together with sophisticated filter mechanisms keeps connections
costs low. Of course, it is also possible to operate a combination of leased lines and dial-
up connections.
Networks connected with the IP router
The motivation
You can connect networks that use TCP/IP as network protocol using the IP router. In
contrast to Internet access with IP masquerading ('Internet access for all PCs on the
LAN'), when networks are coupled,
all IP addresses in the associated networks become
visible over the IP router in the other coupled networks, not just those of the router.
An example of the task
In this example the central office has six branches. A ”small“ router that connects to the
ELSA LANCOM Business in the central office via ISDN dial-up connections is located in
each of the branch offices.
LANCOM_ZENTRALE
4711100 (DSS1)
4711200 (DSS1)
4711300 (DSS1)
4711400 (DSS1)
10.1. 10 .101
Network of Example
Inc. 10.1
10.0
Birmingham
1234565 (DSS1)
10.1 15 100
London
1234562 (DSS1)
10.1 12 100
Glasgow
1234561 (DSS1)
10.1. 11 .100
Bristol
1234566 (DSS1)
10.1 16 100
Network in Glasgow
10.1
11.0
Network in London
10.1 12.0
Network in Leeds
10.1 16.0
Network in Manche-
ster 10.1
15.0
Manchester
1234563 (DSS1)
10.1 13 100
Leeds
1234564 (DSS1)
10.1 14 100
Network in Leeds
10.1 14.0
Network in Manche-
ster 10.1
13.0
Business