Fault Isolation for Fiber Links
Issue 1 May 2002
4-19
555-233-143
Fault Isolation for Fiber Links
Use the following procedure to isolate faults on a fiber link. When troubleshooting
a critical-reliability system [duplicated port-network connectivity (PNC)], first
busyout pnc-standby before busying out a standby:
■
Fiber link (FIBER-LK)
■
Expansion Interface (EXP-INTF)
■
Switch Node Interface (SNI)
■
DS1 Converter (DS1C).
The end of this section describes the pertinent loopback tests and shows a pinout
of the cable used to connect the DS1C-to-DS1 facilities.
!
CAUTION:
Busying out any of these components in a standard-, duplex-, or
high-reliability system (unduplicated PNC) is destructive.
!
CAUTION:
After completing the tests, be sure to release every busied-out component.
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 ...