Netopia Firmware 4000-Series Bedienungsanleitung PDF herunterladen (Seite 303)

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Understanding IP Addressing B-11

Nested IP Subnets

Under certain circumstances, you may want to create remote subnets from the limited number of IP addresses

issued by your ISP or other authority. You can do this using connection proﬁles. These subnets can be nested

within the range of IP addresses available to your network.

For example, suppose that you obtain the Class C network address a.b.c.0 to be distributed among three

networks. This network address can be used on your main network, while portions of it can be subnetted to the

two remaining networks.

Note: The IP address a.b.c.0 has letters in place of the ﬁrst three numbers to generalize it for this example.

The ﬁgure shows a possible network conﬁguration following this scheme. The main network is set up with the

Class C address a.b.c.0, and contains Router A (which could be a Router), a Router, and a number of other

hosts. Router A maintains a link to the Internet and can be used as the default gateway.

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