TRENDnet TDM-C400, Руководство пользователя

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Chapter 6. Configuring the System Operating Modes
81
Common Scenarios
The sections that follow describe common system configurations
that use bridging, routing, or both.
Note that you can also configure several special operating modes.
These are described in ”Configuring Special Bridging Features” on
page 84.
Scenario 1: Routed Connection to ISP
In this scenario, the ISP requires customers to have a routed
connection to their access server. For a routed connection, the LAN
and WAN interfaces must be IP-enabled. No bridging services need
to be enabled. This configuration would have these features:
f
An Ethernet (and/or USB) interface with an IP address and
network mask that identify it as being in the same subnet
as your LAN PCs. See Chapter 4 for instructions.
f
An IP-enabled WAN interface. The interface type can be
PPP or EoA. An IPoA interface can also be used, but they
are rarely used in customer settings. See Chapter 5 for
instructions.
o
If an EoA interfaces is created, an IP address should
be assigned to it. Or, the interface should be
configured to receive an IP address through DHCP.
o
For PPP interfaces, IP information is assigned when
the link is negotiated.
o
For either type of WAN interface, the Default Gateway
check box is normally selected.
f
Each PC’s IP properties specify the ADSL/Ethernet Modem
Router's LAN interface as its gateway IP address. The PCs
may also be configured to obtain IP information
automatically from a DHCP server.
With this configuration, all IP packets originating from your LAN and
destined for the Internet will be routed to the PCs’ default gateway
(the LAN interface), then to the Ethernet Modem Router’s default
gateway (the WAN interface), and then to the WAN interface’s
gateway (the ISP’s access server).
In the System View page in the Home tab, the Mode field will reflect
Routing . With no bridging services enabled, non-IP packets will be
ignored.