Lucent Technologies 7820-0802-003 manual DSL configuration, Configuring switched connections

Configuring DSL Connections (DSLTNT)

DSL configuration

For complete details of configuring authentication or Frame Relay and PPP connections on your DSLTNT, see the APX 8000/MAX TNT/DSLTNT WAN, Routing and Tunneling Configuration Guide and the APX 8000/MAX TNT/DSLTNT Frame Relay Configuration Guide.

DSL configuration

You configure DSL connections in much the same way you configure ISDN or modem connections. DSL connections can be configured as switched or nailed PPP, MP, or MPP, or as Frame Relay-encapsulated connections. You can also use your existing authentication methods, such as RADIUS, to authenticate DSL users, by using PPP protocols in conjunction with PAP or CHAP. You can do this either when the units are first turned on or by setting an inactivity timer.

Any ISDN TA or router (such as a Lucent Pipeline) that supports ISDN BRI (2B1Q) signaling can be connected over an IDSL connection. ADSL and SDSL connections require Ascend DSLPipe units on the remote end.

DSL connections require the following general configuration on the DSLTNT:

•The DSL port in the line profile

•A Connection profile for the remote device

•For Frame Relay connections, a Frame Relay profile

In addition to standard routing connections, you can configure the following DSL-specific capabilities:

•DSLPipe plug and play

•IDSL voice support

Note: For better system performance, Lucent recommends that you enable only DSL ports that are in use, (By default, DSL ports are disabled.)

Configuring switched connections

A DSL physical link is always up, but a PPP session can be established and terminated based on data activity, just as it is for ISDN or PSTN calls. Each PPP session initiates negotiations, followed by authentication and accounting. Switched connections can provide per session authentication as well as accounting information typically used for client billing.

From the service provider perspective, a DSL connection is handled exactly like an ISDN or PSTN call. The DSLTNT checks the Answer-Defaults profile, applies authentication methods, and establishes the PPP session. After some inactivity, the PPP session is dropped, again generating accounting information. DSLPipe units initiate all switched ADSL and SDSL connections, and the DSLTNT handles them as regular incoming PPP calls. Note that Frame Relay connections must be nailed.

You configure the DSLPipe for a switched connection in a similar way to other Pipeline switched connections, with the following important differences:

•Set the Chan Usage parameter in the Configure profile to Switch/Unused (for ADSL or SDSL connections) or Switch/Switch (for IDSL connections).

17-4 APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide