ADC Telecommunications, Inc.
132 CHAPTER 7: PACKET OVER SONET ADMINISTRATION
Configuring and Viewing SONET Alarms
A major advantage of SONET is that it can generate alarm and error
messages when problems occur, such as when a signal fails or degrades.
A receiving interface is notified of network defects in the form of Alarm
Indication Signals (AIS); transmitting interfaces are notified of network
defects by the return of Remote Defect Indications (RDI).
You can configure the alarms and defects that you want the selected POS
interface to report. SONET alarm administration on a POS interface involves
the following:
■Configuring POS Alarm Reporting — You configure the Alarms that
you want the POS interface to report on using the pos report command
within cable interface configuration mode.
■Viewing Alarm Information — You can verify the alarms that are
enabled and disabled on a selected POS interface, as well as the alarms
that have been reported, using the show controller pos <c/s/i>
command within root mode.