US Robotics ADSL Ethernet Modem Overview page 10

Your service provider, usually the telephone company or the ISP, will tell
you the values of VPI/VCI to use after you sign up the service. Your
service provider must also provide your User name, Password, and
Authentication protocol. To set the VPI/VCI parameters including adding,
modifying, and deleting, refer to "Set up VPI/VCI " in this manual.
The following are the required settings for a PPPoE connection:
Parameters Description
VPI Virtual path identifier
VCI Virtual circuit identifier
User name assigned or verified by your service
User name
provider.
The password that will allow login in conjunction
Password
with your user name.
Logical Link Control allows multiple protocol
LLC running over one virtual circuit with a little bit
more overhead.
Virtual Circuit Multiplexer (null encapsulation)
VCMUX allows only one protocol running per virtual
circuit with less overhead.
Network Address Port Translation allows
Enable NAPT multiple computers to share a single WAN IP
Address
Challenge Handshake Access Protocol encrypts
CHAP the password through a DES/MD5 algorithm
which provides more security.
Use Plain-text As Password format for a lesser
PAP
security.
Create a new PPPoE Connection
1. Enter the correct numbers in the VPI and VCI fields.
2. Select the appropriate encapsulation - LLC or VCMUX.
3. Select Enable NAPT if an Internet connection will be shared
among multiple computers.
4. Enter the User name, Password and Authentication – CHAP
or PAP.
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5. Click Add. This will create a new VPI/VCI connection. Up to
eight VPI/VCI connections can be set.
6. Click OK to save the settings.*
Note: If you are setting the NAPT inbound server, please refer to the
LAN Settings section of this manual for more configuration instructions.
Modify a PPPoE Connection
1. Select one VPI/VCI pair from the Connection List.
2. Modify the numbers in the VPI and VCI fields and select the
appropriate encapsulation - LLC or VCMUX.
3. Select Enable NAPT if an Internet connection will be shared
among multiple computers.
4. Enter the User name, Password and Authentication – CHAP
or PAP.
5. Click Modify.
6. Click OK to save the settings.*
Delete a PPPoE Connection
1. Select a VPI/VCI pair from the Connection List.
2. Click Delete.
3. Click OK to save the settings.*
Note: After you click OK, you will be prompted to save your settings.
Make sure you are finished making all your changes before you save
your settings. When you are finished making your changes, click Save .
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