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Cisco ONS 15216 EDFA2/EDFA2-A Operations Guide, R2.4
July 2004
Chapter 10 Troubleshooting
10.1.2 Troubleshooting Optical Alarms
Warning
Follow all directions and warning labels when working with optical fibers. To prevent eye damage,
never look directly into a fiber or connector.
10.1.2.2 GAIN (Gain Out of Range) Alarm
This alarm is only valid when the ONS 15216 EDFA2 is in GAINTEMP mode. It occurs when the value
of OVERALLGAINMEASURED has deviated more than 1.25 dB from the manufacturer-defined set
point’s allowable range. This condition has a 0.25 dB hysteresis.
The GAIN alarm is also triggered if the value of INPWRDBM goes outside the manufacturer-defined
range by more than 0.7 dB. This condition has a 0.2 dB hysteresis.
Use the RTRV-DWDM command to retrieve the values of OVERALLGAINMEASURED and
INPWRDBM.
If both GAIN and LOS alarm conditions occur at the same time, only the LOS alarm is generated via
TL1. The GAIN alarm has a soak period of 1-2 seconds before being raised or cleared.
Possible causes for this alarm are:
• Input power is out of range: Verify that for the current gain setting, the input power is within the
range. For example, if the Gain = 22, then the input range is –27 to –5 dBm. Every dB taken from
the Gain is added to the input range, so if the Gain =21, then the input range is –26 to –4 dBm.
• VOA attenuation is drifting out of range: Verify that the VOA set value approximately equals the
VOA current value.
To determine this, you must use the ASH shell. You can begin an ASH Telnet session using the IP
address of the ONS 15216 EDFA2 followed by port 8023.
telnet
ONS_15216_EDFA2_IP_Address
8023
The following formula provides the setting of the VOA attenuation (in constGainTempComp mode):
“VOA set value (in units of 10 dB)” =
“snmp attribute get local cerent15216EdfaPumpStatusGain 1” –
“snmp attribute get local cerent15216EdfaConstGainOverallGain”
The value of cerent15216EdfaPumpStatusGain 1 is the fixed gain of the amplifier module. The value
of cerent15216EdfaConstGainOverallGain is the set target gain. Note that the minimum VOA value
is approximately 1 dB, which corresponds to the maximum Gain of approximately 22 dB.
The following formula provides the current value of the VOA attenuation:
“VOA current value (in units of 100 dB)” =
“snmp attribute get local cerent15216EdfaInPowerdBm” –
“snmp attribute get local cerent15216EdfaPumpStatusInPowerdBm 1”
The value of cerent15216EdfaInPowerdBm (INPWRDBM) is the current signal power at the input
before the VOA. The value of cerent15216EdfaPumpStatusInPowerdBm 1 is the signal power after
the VOA.
If the “VOA set value” is different than “VOA current value” by more than a typical variation of up
to 0.5 dB, the unit must be returned to Cisco for repair.
- Operations Guide 1
- CONTENTS 3
- 3 Installation 3-1 4
- 5 SNMP MIB Configuration 5-1 5
- 6 ASH Commands 6-1 7
- 7 File Transfers 7-1 8
- 8 Provisioning with TL1 8-1 8
- 9 TL1 Commands 9-1 9
- 10 Troubleshooting 10-1 10
- Contents 11
- About this Guide 19
- Document Conventions 20
- Obtaining Documentation 21
- Documentation Feedback 22
- Submitting a Service Request 23
- Applications 25
- 1.3 Key Features 26
- 1.3.2 Gain Flattening 27
- 1.3.3 Transient Suppression 27
- 1.3.4 Low Noise 27
- 1.3.6 SNMP MIBs 28
- 1.3.7 TL1 28
- Technical Specifications 29
- 2.1.1 Maximum Input Power 30
- 2.1.2 Channel Loading 30
- 2.2 Electrical Specifications 32
- 2.3 Mechanical Specifications 32
- 2.4 External Features 33
- 2.5 Front Panel 34
- Installation 37
- Chapter 3 Installation 38
- 3.3 SC/UPC Optical Ports 39
- 3.4 Communications 41
- 3.4.2 Alarm LEDs 42
- 3.4.2.2 FAIL LED (Red) 43
- 3.4.2.3 LOS LED (Yellow) 43
- 3.4.2.4 Ethernet Socket LEDs 43
- 3.4.3.1 Required Equipment 43
- Click OK when done 45
- Remote Site 47
- 3.4.4.2 Modem Signals 48
- 3.4.4.3 Modem Power Up 48
- • 19,200 baud 49
- • No parity 49
- • 8 bits per character 49
- Table 3-6 Modem Settings 49
- GND RXD TXD 50
- 54
- 4.2 Set IP Address 55
- 4.4 Set Date and Time 56
- 4.7 Set Gain 57
- 4.8 Set Alarm Thresholds 57
- CISCO ONS 15216 58
- ALARM OUT 58
- °C. Setting 60
- 4.9 Set Password 62
- 4.10 Add Users 63
- 4.11 Save Changes 63
- 4.12 Log Off 64
- SNMP MIB Configuration 67
- 5.1.2.1 SNMP Agent 68
- 5.1.2.2 SNMP MIBs 69
- 5.1.2.3 SNMP Manager 70
- 5.2.1 Creating a View 72
- Table 5-5 Creating a View 73
- 5.2.2.1 Set CommunityEntry 74
- 5.3 Setting Up for CTM Access 76
- 5.4 Tables and Groups 78
- 5.4.2 AgentControlGroup 79
- 5.4.3 AlarmEntry 79
- 5.4.4 BootEntry 80
- 5.4.5 BootImageEntry 81
- 5.4.6 CfgGroup 81
- 5.4.7 FfsFileEntry 83
- 5.4.8 FfsOpGroup 84
- 5.4.9 LogEventControl 85
- 5.4.10 LogEventEntry 85
- 5.4.11 OpGroup 86
- 5.4.12 OverallControl 89
- 5.4.13 OverallStatusGroup 89
- 5.4.14 PumpCfgEntry 90
- 5.4.15 PumpStatusEntry 93
- 5.4.16 RtcDateAndTime 94
- 5.4.17 SromIpMgmtGroup 95
- 5.5 Setting Up Traps 96
- 5.5.2 Set Trap Command 97
- 5.6 Retrieving Information 98
- 5.6.2 Date and Time 99
- 5.6.3 Power Gain 100
- 5.6.4 Case Temperature 101
- 5.6.4.2.1 CtmpMin 102
- 5.6.4.2.2 CtmpMax 102
- 5.6.5 Power Bus 103
- 5.6.6 Input Power (Signal) 104
- 5.6.6.1.2 InPowerdBm 105
- 5.6.7 Output Power 106
- 5.6.7.2.2 LpoutDeviation 107
- July 2004 109
- 5.6.9 Alarm Entry 110
- Table 5-28 SNMP Alarms 111
- Table 5-29 SNMP Events 112
- ASH Commands 115
- Chapter 6 ASH Commands 116
- 6.2 Configuration Commands 121
- 6.3 Administrative Commands 124
- 6.3.3 help Command 125
- 6.3.4 history Command 125
- 6.4 Shell Commands 126
- • snmp.cfg 127
- • passwd 127
- 6.6 SNMP Commands 128
- IP_address 130
- 6.6.5 snmp mib get Command 131
- 6.6.6 snmp mib list Command 131
- 6.6.8 snmp row get Command 133
- 6.6.9 snmp row set Command 133
- {IP_address 134
- Syntax Description 135
- 6.6.14 snmp table get Command 137
- 6.7 User Commands 138
- 6.7.2 user entry edit Command 139
- (IP address) 143
- 6.9 Restore Commands 144
- 6.10 Manufacturer Mode 144
- File Transfers 147
- 7.1.3 FTP Commands 149
- 7.2 TFTP File Transfer 150
- Provisioning with TL1 151
- 8.2 Set IP Address 153
- 8.4 Set Date and Time 154
- 8.7 Set Gain 155
- 8.8 Set Alarm Thresholds 155
- RTRV-TH-DWDM::ALL:124; 156
- RTRV-TH-EQPT::ALL:125; 156
- °C. Valid 159
- °C. Valid entries 160
- °C. Setting this value to 0 160
- 8.9 Set Password 161
- 8.10 Add Users 162
- 8.11 Log Off 162
- CPY-MEM:::123:: 163
- ,FFS,CFG; 163
- INIT-SYS::ALL:124::1; 163
- TL1 Commands 165
- 9.3 Notation 166
- Chapter 9 TL1 Commands 167
- 9.6.1 ACT-USER 174
- 9.6.2 ALW-MSG-ALL 175
- 9.6.3 APPLY 178
- 9.6.4 CANC-USER 178
- 9.6.5 COPY-RFILE 179
- 9.6.6 CPY-MEM 180
- CPY-MEM:Amp01::123::LOG,MEM,; 181
- CPY-MEM:Amp01::123::,,; 181
- 9.6.7 DLT-RFILE 182
- 9.6.8 DLT-USER-SECU 182
- 9.6.9 ED-DAT 183
- 9.6.10 ED-DWDM 183
- Example 9-12 ED-DWDM Command 184
- 9.6.11 ED-EQPT 185
- 9.6.12 ED-NE-GEN 185
- =192.168.3.4,CLI=ASH; 186
- 9.6.13 ED-PID 187
- 9.6.14 ED-USER-SECU 187
- 9.6.15 ENT-USER-SECU 188
- 9.6.16 INH-MSG-ALL 189
- 9.6.17 INIT-SYS 192
- 9.6.18 REPT ALM DWDM 193
- 9.6.19 REPT ALM EQPT 195
- 9.6.21 REPT EVT FXFR 200
- 9.6.22 RTRV-ALM-ALL 201
- 9.6.23 RTRV-ALM-DWDM 204
- 9.6.24 RTRV-ALM-EQPT 205
- 9.6.25 RTRV-AO 207
- 9.6.26 RTRV-ATTR-ALL 208
- 9.6.27 RTRV-ATTR-DWDM 210
- 9.6.28 RTRV-ATTR-EQPT 212
- 9.6.29 RTRV-COND-ALL 213
- RTRV-COND-ALL:Amp01::229::; 214
- 9.6.30 RTRV-COND-DWDM 216
- 9.6.31 RTRV-COND-EQPT 217
- 9.6.32 RTRV-DFLT-SECU 219
- 9.6.33 RTRV-DWDM 220
- 9.6.34 RTRV-EQPT 222
- 9.6.35 RTRV-HDR 223
- 9.6.36 RTRV-INV 224
- 9.6.37 RTRV-NE-GEN 225
- 9.6.38 RTRV-RFILE 226
- 9.6.39 RTRV-TH-DWDM 227
- 9.6.40 RTRV-TH-EQPT 228
- RTRV-TH-EQPT:Amp01:ALL:123::; 229
- 9.6.41 RTRV-TOD 230
- 9.6.42 RTRV-USER-SECU 231
- 9.6.43 SET-ATTR-DWDM 232
- 9.6.44 SET-ATTR-EQPT 233
- 9.6.45 SET-ATTR-SECUDFLT 235
- 9.6.46 SET-TH-DWDM 235
- 9.6.47 SET-TH-EQPT 236
- 9.6.48 STA-LOCL-RST 238
- Troubleshooting 239
- 10.1 Alarm Indicators 240
- 10.1.1.3 LOS LED (Yellow) 241
- 10.1.1.4 Ethernet Socket LEDs 241
- ONS_15216_EDFA2_IP_Address 243
- RTRV-INV:Amp01:ALL:123; 247
- RTRV-NE-GEN:AMP01::ALL::; 249
- 10.2.9 Lost Password 250
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