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SNMP and MIBS
8-24 Express5800/ftServer: System Administrator’s Guide for the Linux Operating System
The instances of interest are the following:
These are the instances to check for when pulling cables. State changes include
DUPLEX, SIMPLEX, BROKEN, and of course, various counters such as frames and
collisions. (See
‘‘OpState:State Definitions’’ on page 8-158 for state change
identification.)
3. Run snmpwalk on the ftcEtherState OID before and after pulling each cable:
# snmpwalk -v 1 -c private -t 40 localhost ftcEtherState
SRA-ftLinux-MIB::ftcEtherState.1 = INTEGER: triplex(22)
SRA-ftLinux-MIB::ftcEtherState.2 = INTEGER: device-ready(13)
SRA-ftLinux-MIB::ftcEtherState.3 = INTEGER: simplex(20)
SRA-ftLinux-MIB::ftcEtherState.4 = INTEGER: device-ready(13)
SRA-ftLinux-MIB::ftcEtherState.5 = INTEGER: simplex(20)
SRA-ftLinux-MIB::ftcEtherState.6 = INTEGER: device-ready(13)
In practice, you will actually redirect your snmpwalk output to files for before and after
diff comparison. For example, in your work area, run snmpwalk for the entire
SRA-ftLinux-MIB file and dump that data to a file. Pull the cable, then run snmpwalk
again and dump it to another file.
Finally, run diff on the two files to see all Express5800/ftServer objects that have
changed because of the fault insertion. You may want to put these commands into a
shell script for easier testing.
SNMP and MIBS
The SRA-ftLinux-MIB file maps ftServer device definitions for management by
Net-SNMP and ftlSNMP. These device definitions map to addressable devices in the
/proc virtual file system. ftlSNMP can retrieve operation state data on these devices.
The contents of SRA-ftLinux-MIB provide useful remarks about objects that can be
managed.
Instance
Instance Name
(I/O element / Slot) Device
ftcEtherInstanceName.3 10/5 eth080010
ftcEtherInstanceName.4 10/5 eth080011
ftcEtherInstanceName.5 11/5 eth000010
ftcEtherInstanceName.6 11/5 eth000011
- Express5800/ftServer: 1
- for the Linux 1
- Operating System 1
- Contents 3
- Contents v 5
- Contents vii 7
- Tables ix 9
- Examples 10
- Notation Conventions 11
- Revision Information 11
- Syntax Notation 13
- Getting Help 13
- Chapter 1 15
- Introduction to ftServer 15
- System Administration 15
- Red Hat Enterprise Linux 18
- Linux and UNIX Documents 18
- Installation Overview 22
- Boot Media 23
- Default System Setup 23
- Installation Interfaces 27
- Pre-Installation Checklist 27
- Booting in Linux Rescue Mode 30
- Default Configuration Notes 32
- Configuring the Network 32
- Chapter 3 35
- Updating ftServer System 35
- Firmware 35
- Updating the System BIOS 36
- Updating BMC Firmware 39
- Upgrade Requirements 42
- Related Considerations 42
- Creating a Backup System Disk 47
- Chapter 5 49
- Configuring Internal Disks 51
- Managing Partitions 51
- Setting Up RAID Arrays 56
- Creating a RAID-1 Array 57
- Creating a RAID-0 Array 59
- Removing and Replacing Disks 62
- Administering RAID Arrays 63
- Errors and Faulty Mirrors 64
- Removing a Faulty Mirror 64
- Resynchronization 65
- Replacing a Failed Disk 66
- Example 5-4. Running GRUB 71
- Ethernet Devices 73
- MAC Addresses 78
- Disabling Hyperthreading 79
- Managing the System Clock 80
- Chapter 6 83
- Managing Data Storage 83
- USB Storage Devices 84
- USB Floppy Drives 86
- USB Solid-State Devices 86
- Additional Resources 87
- Chapter 7 89
- Utilities and Software 89
- Device Path Enumeration 93
- The ftsmaint Command 100
- Chapter 8 103
- Simple Network Management 103
- Net-SNMP and ftlSNMP 103
- SNMP Foundations and Concepts 110
- The Basic Net-SNMP Commands 112
- SNMPv3 Support 116
- SNMP’s View of a Network 116
- Managing SNMP 120
- Testing Ethernet Ports 125
- SNMP and MIBS 126
- Device Enumeration 127
- Initial SNMP Testing 129
- Removing ftlSNMP 131
- OpState:State Definitions 132
- OpState:Reason Definitions 133
- Trap Filtering 135
- Trap-Filtering Examples 136
- Chapter 9 145
- Troubleshooting ftServer 145
- Normal Boot Sequence 146
- Possible Boot Problems 147
- System Boot Problems 148
- System Log Messages 150
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