DSL-2640T ADSL 2+ Router User Guide
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5. Choose the Connection Type from the pull-down menu located under the User Name and Password entry
fields. This defines both the connection protocol and encapsulation method used for your ADSL service. The
available options are PPPoA VC-Mux, PPPoA LLC and PPPoE LLC. If have not been provided specific
information for the Connection Type setting, leave the default setting.
6. Leave the MTU value at the default setting (default = 1400) unless you have specific reasons to change this
(see table below for more information).
7. Leave the MRU value at the default setting (default = 1492) unless you have specific reasons to change this
(see table below for more information).
8. Leave the Default Route enabled if you want to use the Router as the default route to the Internet for your
LAN. Whenever a computer on the LAN attempts to access the Internet, the Router becomes the Internet
gateway to the computer. If you have an alternative route for Internet traffic you may disable this without
effecting the Router’s connection.
9. Enable PPPoE PassThrough if you want the Router to allow a “dial-up” or separate bridged PPP connection
to an individual PC (see table below for more information).
10. NAT should remain Enabled. If you disable NAT, you will not be able to use more than one computer for
Internet connections. If you are using multiple virtual connections, NAT functions system-wide, therefore if t
is disabled, NAT will disabled on all connections.
11. The Firewall should remain enabled for most users. If you choose to disable this you will not be able to use
the features configured in the Firewall Configuration and Filters windows located in the Advanced directory.
The next chapter contains a separate section describing these Advanced features.
12. Typically the globally IP settings (i.e. IP address for the WAN interface) for a PPPoA or PPPoA connection
will use Dynamic IP assignment from the ISP. Some accounts may be assigned a specific global IP address. If
you have been give an IP address for you PPPoE/PPPoA connection, select the Static IP option from the IP
Control pull-down menu. This menu can be used to configure the WAN port as an Unnumbered IP interface.
(See table below for information on Unnumbered IP).
13. Choose the desired Connection Setting. Select from: Always ON, Connection On Demand, or Manual. Most
users will want to choose the default connection setting, Always ON.
14. Point-to-Point Tunneling Protocol is a pass-through mechanism that allows packets to pass through the Router
so that it effectively functions as a bridge. Check Enable PPTP and enter the required information in the
ServerIP/Name, Route Target, Route Mask, PPTP Account, PPTP Password, and MPPE Encryption
fields.
15. Most users will not need to change ATM settings. If this is the first time you are setting up the ADSL
connection it is recommended that you leave the Service Category settings at the default values until you have
established the connection. See the table on page 44 for a description of the parameters available for ATM
traffic shaping.
16. When you are satisfied that all the WAN settings are configured correctly, click on the Apply button.
17. The new settings must be saved and the Router must be restarted for the settings to go into effect. To save and
reboot the Router, click on the Tools directory tab and then click the System button. In the System Settings
window, click the Save and Reboot button under Save Settings and Reboot the System.
18. Click OK when the following “Save and restart?” dialog box opens.
19. The Router will save the new settings and restart. Upon restarting the Router will automatically establish the
WAN connection.
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