ELSA LANCOM Business LC-4X00, Manual

Page: 37 / 276

Configuration modes
ELSA LANCOM Business
27
What's happening on the line?
After the basic setup of the devices, further important information can be gained with
regard to the parameters still to be modified, especially by observing the data flow on
the various ports of the router.
In addition to the device statistics that can be read out during a telnet or terminal session,
a variety of other options are also available.
Trace outputs
Trace outputs may be used to monitor the internal processes in the router during or after
configuration. One such trace can be used to display the individual steps involved in
negotiating the PPP. Experienced users may interpret these outputs to trace any errors
occurring in the establishment of a connection. A particular advantage of this is: The
errors being tracked may stem from the configuration of your own
ELSA LANCOM or that
of the remote site.
The trace outputs are slightly delayed behind the actual event, but are always in the
correct sequence. This will not usually hamper interpretation of the displays but should
be taken into consideration if making precise analyses.
How to start a trace
The command to call up a trace follows this syntax:
trace [code] [parameters]
The trace command, the code, the parameters and the combination commands are all
separated from each other by spaces. And what is lurking behind the code and
parameters?
This code ... ... in combination with the trace causes the following:
? Displays a help text
+ Switches on a trace output
- Switches off a trace output
# Switches between different trace outputs (toggle)
no code Displays the current status of the trace
This parameter ... ... brings up the following display for the trace:
Status Status messages for the connection
Error Error messages for the connection
ELSA ELSA protocol negotiation
PPP PPP protocol negotiation