Maintenance-Object Repair Procedures
555-233-143
8-1260
Issue 1 May 2002
Maintenance Loop-Around Test (#886)
This test checks whether an IPSI circuit pack’s Packet Interface circuit can send
and receive data correctly. It establishes a LAP-D link from the IPSI’s Packet
Interface circuit back to the same Packet Interface circuit, and transmits and
receives test data over that testing link. While timing signals from the packet bus
are used for the data transfer, the data itself is looped around on the circuit pack
at the interface to the packet bus and does not get sent over the packet bus.
NOTE:
In a high- or critical-reliability system (duplicated IPSIs), this test does not
run on a standby IPSI’s Packet Interface circuit. However, a failure of the
Maintenance Loop-Around test may have caused an IPSI interchange that
reported an alarm (associated with the loop-around failure, error code 769)
against standby IPSI’s Packet Interface circuit. If so, and if every other
Packet Interface test in test packet-interface Uc long sequence passes,
enter set ipserver-interface to force the standby IPSI to go active. Then,
enter the test packet-interface Uc command to run the Maintenance
Loop-Around test, and verify that the problem has been cleared.
Table 8-511.
Test #886 Maintenance Loop-Around Test
Error
Code
Test
Result
Description / Recommendation
1006,
1137
ABORT
Since the IPSI circuit pack’s Packet Interface circuit is out of service, normal
maintenance tests do not run on that circuit pack.
1. Enter reset packet-interface Uc to reset the Packet Interface circuit.
For further action, see the repair procedures in
for the Packet Interface Reset test (#889).
1139
ABORT
The packet bus is alarmed.
1. Try to retire the alarm associated with the packet bus. Refer to the Alarm
Log via the display alarms command. Refer to the maintenance
documentation for Packet Bus maintenance for further action.
2. Retry the command when the alarm associated with the packet bus is
retired.
1335
ABORT
Internal IPSI error. Since the Packet Interface circuit is on the standby IPSI,
this test is not allowed to execute.
1. To run this test on the standby Packet Interface circuit, enter set
ipserver-interface Uc to activate it.
1373
ABORT
Could not establish the link loop around link to run this test.
1. Retry the command at 1-minute intervals up to 3 times.
Continued on next page
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...