HP B-series Embedded Switches Manual de usuario Pagina 216
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Troubleshooting
216 Fabric OS Procedures Version 3.1.x/4.1.x User Guide
Watchdog (Best Practices)
Watchdog is a subset of the Kernel Error Reporting Software. It is a feature that
reports unexpected and fatal errors when a switch dies. The Watchdog feature
ensures that the switch will not send corrupted data when the software is not
properly performing its function.
The ASIC has a Watchdog register that needs to be probed by the Fabric OS once
every two seconds. If the ASIC detects that the Fabric OS is hung, the ASIC will
wait for an additional two seconds before resetting the CPU. The switch will
always reboot or fail over when a Watchdog error occurs.
Actions
In the event of a Watchdog error, perform the following steps:
■ Collect the output of the supportshow command and contact Technical
Support.
■ (Optional) Turn on settasklogmode in the event of a Watchdog error;
this will allow more information to be collected. Do not enable this mode by
default as it will slow traffic.
■ See specific error message for additional actions. See “Kernel Software
Watchdog Related Errors” on page 217.
- 3.1.x/4.1.x 1
- Third Edition (June 2003) 2
- Part Number: AA–RS23C–TE 2
- Contents 10
- Initial Configuration 13
- Power on the Switch 14
- Configuring the IP Addresses 14
- Initial Setup Example 19
- Switch Login 21
- Customize the Switch Name 24
- Manage Licensed Features 25
- Activating a License 26
- Verifying License Activation 26
- Configure Fabric Parameters 28
- Configure Software Features 30
- Verify Switch Function 31
- Connect ISLs to Switch 33
- Connect Devices to the Switch 35
- Basic Switch Management 39
- Enabling a Switch 40
- Disabling a Switch 40
- Disabling a Port 41
- Example: Core Switch 2/64 42
- Enabling a Port 43
- Switch 2/32 44
- Example: SAN Switch 2/32 44
- Domain IDs 47
- Setting a Domain ID 48
- Firmware Versions 49
- Switch Date and Time 51
- Fabric Configuration Settings 53
- Switch Names 57
- Switch Status Policies 58
- Tracking Switch Changes 63
- Using Dynamic Load-Sharing 66
- Help Commands 71
- Additional Help Topics 72
- Hexadecimal Port Diagrams 73
- 5 = 0101 D = 1101 74
- 6 = 0110 E = 1110 74
- 7 = 0111 F = 1111 74
- Firmware Download 75
- About Firmware Downloads 76
- The Firmware Upgrade Process 78
- 4.0.0c or less 84
- New Features 93
- Listeners 95
- Passwords 97
- Devices: 98
- Switch Access: 98
- Managing Passwords 99
- Setting Recovery Passwords 100
- Basic Security in FOS 101
- Frequently Asked Questions 106
- Working With the Core 109
- Switch 2/64 109
- Ports on the Core Switch 2/64 110
- About the Slot/Port Method 111
- Basic Blade Management 115
- Enabling a Blade 116
- Powering On a Blade 116
- Powering Off a Blade 116
- Core Switch 2/64 Chassis 118
- ■ DISABLED 119
- ■ FAULTY 119
- ■ UNKNOWN 119
- Blade Beacon Mode 123
- The SAN Management 125
- Application 125
- The Management Server 126
- Example: 128
- To delete a WWN from the ACL: 130
- *MS feature is disabled 138
- PID Addressing 139
- Overview 140
- Example Scenarios 142
- About Core PID Addressing 143
- Recommendations 145
- About PID Mapping 146
- Evaluate the Fabric 148
- Analyzing Data 149
- Performing Empirical Testing 150
- Planning the Update Procedure 151
- Hybrid Update 153
- Basic Update Procedures 154
- AIX Procedure 158
- Diagnostics and Status 161
- Diagnostics Overview 162
- Persistent Error Log 165
- Clearing the Switch Error Log 167
- Syslog Daemon 171
- Message Classification 172
- Syslogd CLI Commands 173
- Configuring syslogd 173
- Switch Diagnostics 176
- Port Diagnostics 181
- Hardware Diagnostics 187
- ■ camtest 189
- ■ centralMemoryTest 189
- ■ cmemRetentionTest 189
- ■ cmiTest 189
- Linux Root Capabilities 191
- Troubleshooting 193
- About Troubleshooting 194
- Fibre Channel Process 195
- Most Common Problem Areas 196
- Specific Scenarios 199
- Fabric Segmentation 203
- About Fabric Parameters 203
- Domain ID Conflicts 204
- Restore a Segmented Fabric 204
- Zoning Setup Issues 206
- Prevention 207
- Verify Fabric Merge Problem 208
- Edit Zone Config Members 208
- MQ-WRITE Error 209
- I2C bus Errors 210
- Device Login Issues 212
- Watchdog (Best Practices) 216
- Component Tests Overview 218
- Check Switch Components 219
- BadOrdSet, DiscC3 224
- Additional Component Tests 228
- Link Failure 229
- Port’s Physical State 230
- Speed Negotiation Failure 230
- Marginal Links 234
- Isolating the Areas 235
- Ruling Out Cabling Issues 236
- Glossary 237
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