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Troubleshooting
8-2
9783-A2-GB20-00
July 2000
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DTE Loopback
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Problem Indicators
The unit provides a number of indicators to alert you to possible problems:
Indicators . . .
See . . .
LEDs
Viewing LEDs and Control Leads
and
LED Descriptions
in
Chapter 6,
Operation and Maintenance
, as well as the
user interface screen.
Main Menu
→
Status
→
Display LEDs and Control LEDs
Health and status
Health and Status Messages
in Chapter 6,
Operation and
Maintenance
.
Main Menu
→
Status
→
System and Test Status
Messages also appear at the bottom of any menu-driven
user interface screen.
Performance statistics
Performance Statistics
in Chapter 6,
Operation and
Maintenance
, to help you determine how long a problem
has existed.
Alarm conditions that will
generate an SNMP trap
Alarms
on page 8-7.
SNMP traps Appendix B,
SNMP MIBs and Traps, and RMON Alarm
Defaults
.
Traps supported include warm-start, authentication-failure,
enterprise-specific (those specific to the unit), link-up, and
link-down.