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5
offices.
Accessing the Internet
The most common use for the SMC7301TA is to provide Internet access,
so that everyone on your LAN can surf the web, send/receive e -mail, or share
files. The SMC7301TA automatically acquires the necessary IP addre ss when
the connection to the Internet is established. You don’t need to apply for or
assign an IP address to each PC or workstation on your network.
There are two alternatives in establishing the connection between the
LAN and the Internet: either thr ough ISDN or through an xDSL/cable modem.
With built-in PPPoE (Point-to-Point Protocol over Ethernet) support, the
SMC7301TA provides virtual dial -up environments and allows end users to
connect via an xDSL/cable modem to the Internet whenever they wan t.
Alternatively, end users can connect via an ISDN connection to the
Internet. In this situation, the SMC7301TA supports “bandwidth on demand”.
For example, any user’s initial intent to access the Internet will trigger a
B-channel connection to be se t up. As the traffic builds (for example, more
users try to access the Internet, or the same user generates a lot of traffic),
the SMC7301TA will establish the second connection through the other
B-channel. As traffic decreases, one B -channel will be taken down, until finally,
after a configurable period of inactivity, the remaining B -channel will also be
disconnected.
ISDN Router
ADSL /Cable
Modem
ISP
LAN
Internet
ISP
10 M Ethernet
ADSL / Cable
ISDN
Supporting Dial-in Access to Your Network
Under an ISDN connection you can set up your SMC7301TA to allow
users to connect to your ne twork and share resources from their homes while