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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 2 General Troubleshooting
Identify Points of Failure on a Circuit Path
signal around before it reaches the LIU and sends it through the cross-connect card to the STM-N card.
This test verifies that the cross-connect card and circuit paths are valid, but does not test the LIU on the
E3-12 card.
Figure 2-4 The terminal loopback process on an E3-12 card
A hairpin circuit brings traffic in and out on an E3-12 port rather than sending the traffic onto the STM-N
card. A hairpin loops back only the specific E3 circuit and does not cause an entire STM-N port to loop
back, thus preventing a drop of all traffic on the STM-N port. The hairpin allows you to test a circuit on
nodes running live traffic.
Figure 2-5 The hairpin circuit process on an E3-12 card
2.2 Identify Points of Failure on a Circuit Path
Facility loopbacks, terminal loopbacks, and hairpin circuits are often used together to test the circuit path
through the network or to logically isolate a fault. Performing a network test at each point along the
circuit path systematically eliminates possible points of failure. The example in this section tests an
E3-12 circuit on a two-node MS-SPRing. Using a series of facility loopbacks, terminal loopbacks, and
hairpins, the path of the circuit is traced and the possible points of failure eliminated.
A logical progression of four network test procedures apply to this scenario:
Note The test sequence for your circuits will differ according to the type of circuit and network
topology.
1. A facility loopback on the source-node E3-12 card
2. A hairpin on the source-node E3-12 card
3. A terminal loopback to the destination-node E3-12 card
4. A facility loopback to the destination E3-12 card
E3-12
Test Set
XC STM-N
78262
76171
STM-N
Test Set
XCE3-12
- Text Part Number: 78-13037-01 1
- CONTENTS 3
- 2 General Troubleshooting 2-1 7
- 3 Card Reference 3-1 9
- Contents 10
- May 2002 10
- 4 Maintenance 4-1 11
- About This Manual 19
- Related Documentation 20
- Conventions 20
- Obtaining Documentation 21
- Cisco.com 22
- Technical Assistance Center 22
- Cisco TAC Web Site 23
- Cisco TAC Escalation Center 23
- Alarm Troubleshooting 25
- Alarm Index 26
- Alarm Index by Alarm Type 27
- 1.3 Trouble Notifications 29
- 1.4 Safety Summary 30
- 1.5 Alarm Procedures 31
- 1.5.3 APSC-IMP 32
- 1.5.4 APSCINCON 33
- 1.5.5 APSCM 33
- 1.5.6 APSCNMIS 34
- 1.5.7 AU-LOP 35
- 1.5.8 AUTOLSROFF 36
- 1.5.9 AUTORESET 37
- 1.5.10 AUTOSW-LOP-SNCP 37
- Alarm Procedures 38
- 1.5.11 AUTOSW-UNEQ-SNCP 39
- 1.5.12 BKUPMEMP 40
- 1.5.13 CARLOSS (E-Series) 41
- 1.5.14 CARLOSS (EQPT) 42
- 1.5.15 CONTBUS-A 43
- 1.5.16 CONTBUS-A-18 44
- 1.5.17 CONTBUS-B 45
- 1.5.18 CONTBUS-B-18 46
- 1.5.19 CTNEQPT-PBPROT 46
- 1.5.20 CTNEQPT-PBWORK 48
- 1.5.21 DATAFLT 49
- 1.5.22 EHIBATVG-A 50
- 1.5.23 EHIBATVG-B 50
- 1.5.24 ELWBATVG-A 50
- 1.5.25 ELWBATVG-B 51
- 1.5.26 EOC 51
- 1.5.27 EQPT 53
- 1.5.28 EQPT-MISS 53
- 1.5.29 E-W-MISMATCH 54
- 1.5.30 EXCCOL 55
- 1.5.31 EXT 56
- 1.5.32 EXTRA-TRAF-PREEMPT 56
- 1.5.33 FAN 57
- 1.5.34 FEPRLF 57
- 1.5.35 FE-SDPRLF 58
- 1.5.36 FRNGSYNC 58
- 1.5.37 FSTSYNC 58
- 1.5.38 HITEMP 59
- 1.5.39 HLDOVERSYNC 59
- 1.5.40 HP-TIM 60
- 1.5.41 HP-UNEQ 60
- 1.5.42 IMPROPRMVL 61
- 1.5.43 INVMACADDR 62
- 1.5.44 LOF (E-1) 62
- 1.5.45 LOF (STM-N) 63
- 1.5.46 LOS (E-N) 64
- 1.5.47 LOS (STM-N) 65
- 1.5.48 MEA (EQPT) 65
- 1.5.49 MEA (FAN) 66
- 1.5.50 MEM-GONE 67
- 1.5.51 MEM-LOW 67
- 1.5.53 MSSP-OOSYNC 69
- 1.5.54 PRC-DUPID 69
- 1.5.55 PWR-A 70
- 1.5.56 PWR-B 70
- 1.5.57 RCVR-MISS 71
- 1.5.58 RING-MISMATCH 71
- 1.5.59 SDBER-EXCEED-HO 72
- 1.5.60 SFBER-EXCEED-HO 72
- 1.5.61 SFTWDOWN 73
- 1.5.62 SNTP-HOST 73
- 1.5.63 SQUELCH-PATH 74
- 1.5.64 SSM-FAIL (BITS) 74
- 1.5.65 SWMTXMOD 74
- 1.5.66 SYNCPRI 76
- 1.5.67 SYNCSEC 76
- 1.5.68 SYNCTHIRD 77
- 1.5.69 SYSBOOT 78
- 1.5.70 TPTFAIL 78
- 1.5.71 TRMT 78
- 1.5.72 TRMT-MISS 79
- General Troubleshooting 81
- Network Troubleshooting Tests 82
- Procedure: Test the FMEC Card 86
- Procedure: Test the FMEC card 93
- 2.3.14 Ethernet Connections 104
- 2.4 Circuits and Timing 107
- Circuits and Timing 108
- 2.5 Fiber and Cabling 111
- Fiber and Cabling 112
- Class 1 laser product 114
- Figure 2-16 RJ-45 pin numbers 116
- 2.6 Power and LED Tests 118
- Power and LED Tests 119
- Card Reference 121
- 3.1.3 Optical Cards 122
- 3.1.4 Ethernet Cards 123
- 3.1.5 Card Power Consumption 123
- Chapter 3 Card Reference 124
- Electrical Card Protection 124
- 3.2.1 1:0 Protection 125
- 3.2.2 1:1 Protection 125
- 3.2.3 1:N Protection 125
- 3.2.3.1 Revertive Switching 126
- 3.3 Optical Card Protection 127
- Unprotected 128
- 3.6.1 TCC-I Functionality 129
- 3.6.4 TCC-I Specifications 131
- 3.7 Cross Connect XC10G Card 132
- ACT/STBY 133
- Card-Level LEDs Definition 134
- Cross Connect XC10G Card 135
- 3.8 E1-N-14 Card 136
- E1-N-14 Card 137
- 3.8.3 E1-N-14 Specifications 138
- 3.9 E3-12 Card 139
- Figure 3-11 E3-12 faceplate 140
- 3.9.3 E3-12 Specifications 141
- 3.10 DS3i-N-12 Card 142
- DS3i-N-12 Card 143
- 3.11 BLANK Card 146
- 33678 12931 147
- 3.12 FMEC-E1 Card 148
- 3.13 FMEC-E3/DS3 Card 149
- FMEC-E3/DS3 Card 150
- 3.14 FMEC-DS1/E1 Card 152
- 3.15 FMEC-BLANK Card 153
- 3.16 MIC-A/P Card 154
- MIC-A/P Card 155
- 3.17 MIC-C/T/P Card 156
- MIC-C/T/P Card 157
- OC3 IR 4/STM1 SH 1310 Card 160
- OC12 IR/STM4 SH 1310 Card 164
- OC12 LR/STM4 LH 1310 Card 167
- OC12 LR/STM4 LH 1550 Card 169
- OC48 IR/STM16 SH AS 1310 Card 174
- OC48 LR/STM16 LH AS 1550 Card 177
- OC192 LR/STM64 LH 1550 Card 184
- Class 1M (IEC) 185
- Class 1 (CDRH) 185
- 3.26 E100T-G Card 188
- Figure 3-43 E100T-G faceplate 189
- E100T-G Card 190
- 3.27 E1000-2-G Card 192
- E1000-2-G Card 193
- 3.28 G1000-4 Card 195
- G1000-4 Card 197
- Maintenance 199
- 4.1 Air Filter Inspection 200
- Fan tray filter 201
- 4.2 System Reset 202
- Chapter 4 Maintenance 203
- System Reset 203
- 4.4 Card Replacement 207
- Card Replacement 208
- 4.5 Span Upgrade 214
- 4.5.1 Span Upgrade Wizard 215
- Span Upgrade 216
- 4.5.2 Manual Span Upgrades 221
- 4.6 Fiber Cleaning 225
- 4.7 Powering Down a Node 226
- Procedure: Power Down a Node 227
- 4.8 Powering Up a Node 228
- Powering Up a Node 229
- Numerics 231
- Glossary 232
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