363-206-295
Administration and Provisioning
Issue 1
December 1997
8-5
Controller Maintenance
8
The controller for the DDM-2000 OC-12 Multiplexer consists of the SYSCTL and
OHCTL circuit packs. The SYSCTL circuit pack provides CIT interfaces and
coordinates protection switching, as well as all shelf maintenance and
provisioning activities. The OHCTL circuit pack provides an X.25 interface and a
communications channel to remote shelves via the DCC bytes in the OC-N
section overhead. Both circuit packs have a processor and both have volatile
random access memory (RAM) and nonvolatile memory.
The DDM-2000 OC-12 Multiplexer is designed so that SYSCTL failures do not
affect transmission. That is, no hits or errors will occur on any traffic as a result of
a SYSCTL circuit pack failure. A SYSCTL failure does result in the loss of
automatic protection switching. However, if a transmission circuit pack fails before
a SYSCTL failure, the protection switch will remain effective during the SYSCTL
failure and service is preserved. This means that if an active transmission circuit
pack should fail while the SYSCTL is failed, a protection switch cannot be done
and service carried by the failed circuit pack will be affected.
Memory Administration
8
All transmission affecting parameters that are set by software are stored in
nonvolatile memory on the SYSCTL circuit pack and on the appropriate
transmission circuit packs. When the shelf is powered up or the SYSCTL circuit
pack is replaced, the shelf's transmission values are automatically uploaded to the
SYSCTL. When a transmission circuit pack is replaced, provisioning data stored
on the SYSCTL is automatically downloaded to the replacement circuit pack.
Manual action is not required to maintain system provisioning after a circuit pack
is replaced.
Certain non-service-affecting provisioned data, such as alarm delay are stored
only on the SYSCTL circuit pack. This means that when a SYSCTL circuit pack is
replaced, the new SYSTCL circuit pack should be initialized by pressing the INIT
button during the 10-second interval while the CR alarm LED is flashing after the
SYSCTL circuit pack is inserted. This action is the same as entering the
init-
sys:sysctl
command which sets the SYSCTL circuit pack parameters to their
default values. Refer to the
init-sys
command in Section 11, "Commands and
Reports," and to "Install or Replace SYSCTL," in the TOP section of this manual
(Volume II). If parameters other than the default values are needed, the values
must be entered using the CIT. If the INIT function is not performed, whatever
values that are stored in nonvolatile memory on the new SYSCTL circuit pack are
used. Failure to follow the proper procedure may not cause transmission errors or
loss of service but could affect maintenance. For example, an invalid TID could
produce confusing TL1 reports to the OS.
Содержание DDM-2000 OC-12
Страница 1: ...363 206 295 Issue 1 December 1997 DDM 2000 OC 12 Multiplexer Release 7 0 User Service Manual Volume I ...
Страница 37: ...Tables xxxviii Issue 1 December 1997 A A SONET Overview A 1 SONET Payloads A 18 A 2 SONET Transport Rates A 19 ...
Страница 506: ...INS PROG 8 of 8 Page INS PROG COMMANDS RELATED rtrv eqpt rtrv ne OC 12 DDM 2000 1997 December 1 Issue 11 89 ...
Страница 528: ...RTRV ATTR ALM 2 of 2 Page RTRV ATTR ALM COMMANDS RELATED set attr alm OC 12 DDM 2000 1997 December 1 Issue 11 111 ...
Страница 565: ...RTRV OC3 3 of 3 Page RTRV OC3 COMMANDS RELATED rtrv sync 11 148 1997 December 1 Issue OC 12 DDM 2000 ...
Страница 664: ...SET FEAT 3 of 3 Page SET FEAT COMMANDS RELATED rtrv feat OC 12 DDM 2000 1997 December 1 Issue 11 247 ...
Страница 766: ... Ctl T TOGGLE 2 of 2 Page Ctl T TOGGLE COMMANDS RELATED logout rlgn OC 12 DDM 2000 1997 December 1 Issue 11 349 ...
Страница 847: ...Multiplexer OC 12 DDM 2000 7 Release TARP TOP Manual User Service II Volume 363 206 295 1 Issue 1997 December ...
Страница 867: ...363 206 295 TOP Maintenance and Operation BLANK LEFT INTENTIONALLY PAGE THIS 12 1997 December 1 Issue ...
Страница 1145: ...Order Circuit 363 206 295 NTP 029 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1146: ...Order Circuit 363 206 295 NTP 030 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1182: ...Turnup System 363 206 295 NTP 033 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1243: ...Clearing Trouble 363 206 295 TAP 107 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1393: ...363 206 295 DLP 513 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1394: ...363 206 295 DLP 514 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1456: ...363 206 295 DLP 523 7 of 7 Page 1997 December 1 Issue OC 12 via Access Broadcast Video for Cross connections of Example 4 Figure ...
Страница 1465: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 2 Page Schematic Ring Virtual ATM Sample 1 Figure ...
Страница 1469: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 6 Page Ring Virtual ATM OC 12 DDM 2000 for Cross connections of Example 4 Figure ...
Страница 1565: ...363 206 295 DLP 543 6 of 5 Page 1997 December 1 Issue Network Broadcast Video of Test Transmission 2 Figure ...
Страница 1566: ...DLP 543 363 206 295 1997 December 1 Issue 6 of 6 Page Network Ring Virtual ATM of Test Transmission 3 Figure ...