Chapter17: System Maintenance and Administration
Avidia System Configuration and Management User Manual 349
Configuring and Initiating IDSL Loopbacks
You can configure loopbacks on a specific loopback point for each port. The loopbacks occur
in both the customer (downstream) and network (upstream) directions. The performance
monitoring mode setting determines how statistics are collected (see “Configuring IDSL Line
Profiles” on page 127 for details).
You configure and initiate IDSL loopbacks from the ::idsl=> prompt. From the ::root=>
prompt, type the following command then press to display the ::idsl=> prompt.
diag idsl
Type the loopback command in the following format, then press .
loopback <port> (enable|disable) [<node>]
Parameters
<port>
The port for which you want to enable or disable loopbacks (format slot.port).
(enable|disable)
Enable or disable loopbacks.
[<node>]
The testing node (this specifies the loopback point). The testing node values are 0 (Avidia
system) to 7. Omitting the testing node parameter enables or disables loopbacks on the
Avidia system (node 0). To determine the number of nodes for a specific port, display the
IDSL loopback and corrupted CRC test configuration (see page351). The number of nodes
is one less than the number of segments.
Example
::idsl=> loopback 5.1 enable 3
The node setting applies to both loopbacks and the corrupted CRC test.
ENTER
ENTER