Interfaces
TransPort LR User Guide
35
DSL interface
These topics describe configuring and managing the DSL interface.
Related topics
Show DSL status and statistics on page 37
Related commands
Configure DSL
To configure the DSL interface to connect to your DSL network, you need to configure the following:
Required configuration items
n
Enable the DSL interface.
n
Virtual Path Identifier (VPI) and Virtual Circuit Identifier (VCI) parameters. These parameters
are specific to each DSL provider and must be configured to match your provider’s settings.
n
Data encapsulation for the DSL interface. This parameter is specific to each DSL provider and
must be configured to match your provider’s settings.
n
Username and password. The username and password relate to your account with your DSL
provider. A password is not always needed.
Additional configurable options
The following additional configuration settings are not typically configured to get the DSL interface
connected to the DSL network, but you can set them as needed:
n
The technology used on the DSL line, known as the line mode.
n
The Maximum Transmission Unit (MTU). The MTU defines the maximum size (in bytes) of a
packet that can be sent over the DSL interface.
n
Network Address Translation (NAT).
n
A description of the DSL interface.
n
Whether to delay bringing up the DSL for a specified number of seconds. This delay allows the
DSL provider network to propagate network changes after the device has connected to the
network, and before packets can be sent and received. This delay prevents the device from
assuming the network is fully operational before it actually is fully operational, which could in
turn cause problems with other features, such as interface failover. During this delay, the
DSL
LED flashes, to indicate the interface is not fully up. Because characteristics can differ
among provider networks, use of the
delay-up
parameter is provider-specific.
