Nortel DMS-100 Series User manual

Critical Release Notice
Publication number: 297-8021-545
Publication release: Standard 14.03
The content of this customer NTP supports the
SN09 software release.
Bookmarks used in this NTP highlight the changes between the NA015 baseline and the current
release. The bookmarks provided are color-coded to identify release-specific content changes. NTP
volumes that do not contain bookmarks indicate that the NA015 baseline remains unchanged and is
valid for the current release.
Bookmark Color Legend
Orange: Applies to new or modified content for SN09 that is valid through the current
release.
Attention!
Adobe
® Acrobat ® Reader ™ 5.0 or higher is required to view bookmarks in color.

Publication History
January 2006
Standard release 14.03 for software release SN09. Updates made for this release are shown
below:
Changed procedure: Emergency power conservation Shutdown – Showing that the XPM
unit to be powered down must match the ENET/JNET plane number that is to be powered
down.

297-8021-545
DMS-100 Family
North American DMS-100
Recovery Procedures
LET0015 and up Standard 14.02 May 2001

DMS-100 Family
North American DMS-100
Recovery Procedures
Publication number: 297-8021-545
Product release: LET0015 and up
Document release: Standard 14.02
Date: May 2001
Copyright © 1996-2001 Nortel Networks,
All Rights Reserved
Printed in the United States of America
NORTEL NETWORKS CONFIDENTIAL: The information contained herein is the property of Nortel Networks and is
strictly confidential. Except as expressly authorized in writing by Nortel Networks, the holder shall keep all information contained
herein confidential, shall disclose the information only to its employees with a need to know, and shall protect the information, in
whole or in part, from disclosure and dissemination to third parties with the same degree of care it uses to protect its own
confidential information, but with no less than reasonable care. Except as expressly authorized in writing by Nortel Networks, the
holder is granted no rights to use the information contained herein.
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as
progress in engineering and manufacturing may warrant. Changes or modification to the DMS-100 without the express consent of
Nortel Networks may void its warranty and void the user’s authority to operate the equipment.
Nortel Networks, the Nortel Networks logo, the Globemark, How the World Shares Ideas, Unified Networks, DMS, DMS-100,
Helmsman, MAP, Meridian, Nortel, Northern Telecom, NT, SuperNode, and TOPS are trademarks of Nortel Networks.

DMS-100 Family NA100 Recovery Procedures LET0015 and up
iii
Contents
Recovery Procedures
About this document vii
How to check the version and issue of this document vii
References in this document vii
What precautionary messages mean viii
How commands, parameters, and responses are represented ix
Input prompt (>) ix
Commands and fixed parameters ix
Variables ix
Responses ix
1 System recovery controller 1-1
About the system recovery controller 1-1
SRC functions 1-2
Required SRC conditions for PM recovery 1-4
SRC triggers 1-4
SRC dependency manager 1-5
SRC group manager 1-6
Limit of concurrent load activities 1-9
Example of automatic broadcast loading 1-9
Automatic single loading 1-10
SRC recovery methods 1-10
Series I PMs that the SRC automatically recovers 1-11
Series II PMs that the SRC automatically recovers 1-11
Series II XMS-based PMs that the SRC automatically recovers 1-12
Series III LPP-based PMs that the SRC automatically recovers 1-13
How to monitor SRC operation 1-13
MAP terminal displays 1-14
Log reports 1-29
Failure of SRC to recover a PM 1-32
Manual override of the SRC 1-33
2 System level recovery procedures 2-1
Introduction to system level recovery procedures 2-1
Explanatory and context-setting information 2-1
Summary flowchart 2-1
Step-action instructions 2-1

iv Contents
297-8021-545 Standard 14.02 May 2001
Booting a DMS switch 2-2
DMS-Spectrum Peripheral Module recovery process 2-17
Performing a cold restart 2-21
Performing a reload-restart 2-30
Performing a warm restart 2-39
Recovering a composite clock 2-48
Recovering from a dead system in a SuperNode switch 2-55
Recovering from a dead system in a SuperNode SE switch 2-86
3 Node level recovery procedures 3-1
Introduction to node level recovery procedures 3-1
Explanatory and context-setting information 3-1
Summary flowchart 3-1
Step-action instructions 3-1
Recovering the enhanced network 3-2
Recovering link peripheral processors 3-15
Recovering SuperNode SE application specific units 3-34
4 Recovery procedures for individual devices and services 4-1
Introduction to recovery procedures for individual devices and services 4-1
Explanatory and context-setting information 4-1
Summary flowchart 4-1
Step-action instructions 4-1
Checking for call completion 4-3
Checking for message throughput 4-16
MP position (integrated) recovery 4-30
MP position (standalone) recovery 4-35
PM TPC recovery 4-41
Recovering AMA data with block numbers 4-53
Recovering AMA data without DIRP block numbers 4-59
Recovering CCS7 linksets 4-76
Recovering CompuCALL 4-88
Recovering data from a disk to tape 4-96
Recovering a dead DIRP utility 4-102
Recovering enhanced link peripheral processors 4-106
Recovering a stuck HLIU or HSLR 4-114
Recovering a stuck HLIU under a composite clock failure 4-122
Recovering a stuck LIU7 4-128
Recovering volumes marked INERROR 4-137
5 Emergency power conservation recovery procedures 5-1
Introduction to emergency power conservation recovery procedures 5-1
Explanatory and context-setting information 5-1
Summary flowchart 5-1
Step-action instructions 5-1
Restoration 5-3
Restoring the CM to duplex operation in SuperNode 5-7
Restoring the CM duplex operation in SuperNode SE 5-12
Restoring the ELPP LIM to duplex operation 5-18
Restoring the junctored network to duplex operation 5-23

Contents v
DMS-100 Family NA100 Recovery Procedures LET0015 and up
Restoring the LCMs to duplex operation 5-28
measures Restoring the LGCs, LTCs, and DTCs to duplex operation 5-32
Restoring the line modules to duplex operation 5-40
Restoring the LPP LIM to duplex operation 5-45
Restoring the maintenance trunk modules to service 5-49
Restoring the MS to duplex operation 5-53
Restoring the MSB7 to duplex operation 5-58
Restoring the remote oscillator shelf to duplex operation 5-65
Restoring a SuperNode ENET to duplex operation 5-68
Restoring a SuperNode SE ENET to duplex operation 5-77
Shutdown 5-85
Emergency shutdown of DMS system 5-91
Emergency shutdown of maintenance trunk modules 5-95
Emergency shutdown of one DMS SuperNode CM plane 5-100
Emergency shutdown of one DMS SuperNode MS plane 5-107
Emergency shutdown of one enhanced network plane 5-112
Emergency shutdown of one half of a line module pair 5-121
Emergency shutdown of one junctored network plane 5-125
Emergency shutdown of one LGC, LTC, and DTC unit 5-129
Emergency shutdown of one LIM unit on each ELPP 5-137
Emergency shutdown of one LIM unit on each LPP 5-143
Emergency shutdown of one MS plane 5-149
Emergency shutdown of one remote oscillator shelf plane 5-155
Emergency shutdown of one SuperNode SE CM plane 5-159
Emergency shutdown of one SuperNode SE MS plane 5-169
Emergency shutdown of one unit of LCMs 5-174
Emergency shutdown of one unit of MSB7s 5-178

DMS-100 Family NA100 Recovery Procedures LET0015 and up
vii
About this document
How to check the version and issue of this document
The version and issue of the document are indicated by numbers, for example,
01.01.
The first two digits indicate the version. The version number increases each
time the document is updated to support a new software release. For example,
the first release of a document is 01.01. In the next software release cycle, the
first release of the same document is 02.01.
The second two digits indicate the issue. The issue number increases each
time the document is revised but rereleased in the same software release cycle.
For example, the second release of a document in the same software release
cycle is 01.02.
To determine which version of this document applies to the software in your
office and how documentation for your product is organized, check the release
information in Product Documentation Directory, 297-8991-001.
References in this document
The following documents are referred to in this document:
•Alarm Clearing and Performance Monitoring Procedures
•Bellcore Format Automatic Message Accounting Reference Guide,
297-1001-830
•Card Replacement Procedures
•DMS-100 Family Commands Reference Manual, 297-1001-822
•Log Report Reference Manual
•Magentic Tape Reference Manual, 297-1001-118
•Operational Measurements Reference Manual
•Routine Maintenance Procedures