Monitoring the DSU/CSU
4-4
7110-A2-GB20-00
June 1997
Table 4-2.
Health and Status Messages (2 of 2)
Message
What To Do
What Message Indicates
Network Mgmt
Link Down
This condition only occurs if
the Management port is
configured for Net Link, and
communication between the
management system and the
DSU/CSU is not currently
possible for the port.
1. Verify that the Management Port
Use configuration option is
properly set (see Appendix A for
configuration option information).
2. Check cables.
Device Fail
yyyyyyyy
An internal error has been
detected by the operating
software.
yyyyyyyy indicates
the 8-digit hexadecimal failure
code.
1. Provide the 8-digit failure code
shown (
yyyyyyyy ) to your service
representative.
2. Reset the DSU/CSU to clear the
condition and message.
Self-Test Results
The results of the last power-up or reset self-test appear in the middle column of
the System and Test Status screen.
Table 4-3.
Self-Test Results Messages
Message
What Message Indicates
What To Do
CPU Fail
The CPU failed internal testing.
1. Reset the unit and try again.
Device Fail
One or more of the DSU/CSU’s
integrated circuit chips has failed
device-level testing.
2. Call your service
representative for assistance.
B8ZS/LOS
Fail
The DSU/CSU failed to transmit all
ones or to detect a Loss of Signal.
Network T1
Fail
The DSU/CSU failed to internally
loop data on the network T1 circuit.
Alarm Fail
The DSU/CSU failed to transmit AIS
or to detect a Yellow alarm.
Memory Fail
The DSU/CSU failed memory
verification.
DSU/CSU
Port Fail
The Data Port failed self-test.
Failure
xxxxxxxx
An internal failure occurred.
(xxxxxxxx represents an eight-digit
hexadecimal failure code for use by
service personnel.)
Record the failure code and
contact your service
representative.
Passed
No problems were found during
power-up.
No action needed; no problems
were found during power-up or
reset.