Question & Answer
Question
The SNMP monitoring station requires SNMPv2c
Cause
Unable to query SNMP on AIX
Answer
The following steps are based on the /etc/snmpdv3.conf default configuration file.
Change community public to a different name, one that isn't easily guessed.
In this example, we used foo1234 as the community name.
Change community public to a different name, one that isn't easily guessed.
In this example, we used foo1234 as the community name.
1) Verify that the start of snmpd,aixmibd,hostmibd, and snmpmibd are uncommented in /etc/rc.tcpip
start /usr/sbin/snmpd "$src_running"
start /usr/sbin/hostmibd "$src_running"
start /usr/sbin/snmpmibd "$src_running"
start /usr/sbin/aixmibd "$src_running"
-
2) snmpd is linked to snmpdv3ne, which is the default.
# ls -l /usr/sbin/snmpd
lrwxrwxrwx 1 root system 9 Jun 23 2023 /usr/sbin/snmpd -> /usr/sbin/snmpdv3ne
-
3) Configure snmpdv3.conf for SNMPv2c
Remove the comment from the internet line:
#VACM_VIEW defaultView internet - included -
-
Change this line from:
VACM_GROUP group1 SNMPv1 public -
-
Change to:
VACM_GROUP group1 SNMPv1 foo1234 -
-
Change this line from:
VACM_VIEW defaultView 1.3.6.1.4.1.2.6.191 - excluded -
-
Change to:
VACM_VIEW defaultView 1.3.6.1.4.1.2.6.191 - included -
-
Add these 3 lines to snmpdv3.conf:
The 3 lines can be added to the end of the file.
VACM_GROUP group2 SNMPv2c foo1234 -
VACM_ACCESS group2 - - noAuthNoPriv SNMPv2c defaultView - defaultView -
COMMUNITY foo1234 foo1234 noAuthNoPriv 0.0.0.0 0.0.0.0 -
-
4) Add this line to clsnmp.conf for testing. The file is not used external to AIX.
v2c 127.0.0.1 snmpv2c
-
5) Use the chssys command to assign the new community name to the DPI2 subagents in the ODM
# chssys -s aixmibd -a "-c foo1234"; chssys -s hostmibd -a "-c foo1234"; chssys -s snmpmibd -a "-c foo1234"
-
6) Stop and start the daemons in this order
# stopsrc -s aixmibd; stopsrc -s hostmibd; stopsrc -s snmpmibd
# stopsrc -s snmpd
-
# startsrc -s snmpd
# startsrc -s aixmibd; startsrc -s hostmibd; startsrc -s snmpmibd
-
# ps -ef | grep mibd
root 5177616 3539374 0 09:03:15 - 0:00 /usr/sbin/aixmibd -c foo1234
root 8913242 3539374 0 09:03:15 - 0:00 /usr/sbin/snmpmibd -c foo1234
root 9306592 3539374 0 09:03:15 - 0:00 /usr/sbin/hostmibd -c foo1234
-
7) Test SNMPv2c by sending a query back to itself over loopback.
Output similar to the following:
-
# clsnmp -h v2c -c foo1234 walk system
1.3.6.1.2.1.1.1.0 = IBM PowerPC CHRP Computer
Machine Type: 0x0800004c Processor id: 00FABFB24B00
Base Operating System Runtime AIX version: 07.02.0005.0103
TCP/IP Client Core Support version: 07.02.0005.0104
1.3.6.1.2.1.1.2.0 = 1.3.6.1.4.1.2.3.1.2.1.1.3
1.3.6.1.2.1.1.3.0 = 1700
1.3.6.1.2.1.1.4.0 = NULL
1.3.6.1.2.1.1.5.0 = tcp121.aus.stglabs.ibm.com
1.3.6.1.2.1.1.6.0 = NULL
1.3.6.1.2.1.1.7.0 = 72
1.3.6.1.2.1.1.8.0 = 300
1.3.6.1.2.1.1.9.1.2.1 = 1.3.6.1.4.1.2.3.1.2.1.1.3
1.3.6.1.2.1.1.9.1.2.2 = 1.3.6.1.4.1.2.6.191
1.3.6.1.2.1.1.9.1.2.3 = 1.3.6.1.2.1.25
1.3.6.1.2.1.1.9.1.2.4 = 1.3.6.1.4.1.2.3.1.2.1.6
1.3.6.1.2.1.1.9.1.3.1 = AIX SNMP Agent
1.3.6.1.2.1.1.9.1.3.2 = AIX Enterprise MIB Support subagent
1.3.6.1.2.1.1.9.1.3.3 = Host Resources DPI sub-agent Version 1
1.3.6.1.2.1.1.9.1.3.4 = AIX SNMP MIB SubAgent
1.3.6.1.2.1.1.9.1.4.1 = 0
1.3.6.1.2.1.1.9.1.4.2 = 300
1.3.6.1.2.1.1.9.1.4.3 = 300
1.3.6.1.2.1.1.9.1.4.4 = 300
-
# clsnmp -h v2c -v -c foo1234 walk system
sysDescr.0 = IBM PowerPC CHRP Computer
Machine Type: 0x0800004c Processor id: 00FABFB24B00
Base Operating System Runtime AIX version: 07.02.0005.0103
TCP/IP Client Core Support version: 07.02.0005.0104
sysObjectID.0 = 1.3.6.1.4.1.2.3.1.2.1.1.3
sysUpTime.0 = 6 minutes, 48 seconds (40800 timeticks)
sysContact.0 = NULL
sysName.0 = tcp121.aus.stglabs.ibm.com
sysLocation.0 = NULL
sysServices.0 = 72
sysORLastChange.0 = 3 seconds (300 timeticks)
sysORID.1 = 1.3.6.1.4.1.2.3.1.2.1.1.3
sysORID.2 = 1.3.6.1.4.1.2.6.191
sysORID.3 = 1.3.6.1.2.1.25
sysORID.4 = 1.3.6.1.4.1.2.3.1.2.1.6
sysORDescr.1 = AIX SNMP Agent
sysORDescr.2 = AIX Enterprise MIB Support subagent
sysORDescr.3 = Host Resources DPI sub-agent Version 1
sysORDescr.4 = AIX SNMP MIB SubAgent
sysORUpTime.1 = 0 seconds (0 timeticks)
sysORUpTime.2 = 3 seconds (300 timeticks)
sysORUpTime.3 = 3 seconds (300 timeticks)
sysORUpTime.4 = 3 seconds (300 timeticks)
-
# clsnmp -h v2c -c foo1234 walk aixpagingspace
1.3.6.1.4.1.2.6.191.2.4.1.0 = 95
1.3.6.1.4.1.2.6.191.2.4.2.1.1.1 = hd6
1.3.6.1.4.1.2.6.191.2.4.2.1.2.1 = rootvg
1.3.6.1.4.1.2.6.191.2.4.2.1.3.1 = hdisk0
1.3.6.1.4.1.2.6.191.2.4.2.1.4.1 = 512
1.3.6.1.4.1.2.6.191.2.4.2.1.5.1 = 2
1.3.6.1.4.1.2.6.191.2.4.2.1.6.1 = 1
1.3.6.1.4.1.2.6.191.2.4.2.1.7.1 = 1
1.3.6.1.4.1.2.6.191.2.4.2.1.8.1 = 1
-
# clsnmp -h v2c -v -c foo1234 walk aixpagingspace
aixPageThreshold.0 = 95
aixPageName.1 = hd6
aixPageNameVG.1 = rootvg
aixPageNamePV.1 = hdisk0
aixPageSize.1 = 512
aixPagePercentUsed.1 = 2
aixPageStatus.1 = 1
aixPageType.1 = 1
aixPageIndex.1 = 1
-
The working snmpdv3.conf and clsnmp.conf files can be used on other AIX LPARs.
For more information:
https://www.ibm.com/docs/en/aix/7.2?topic=files-snmpdv3conf-file
start /usr/sbin/snmpd "$src_running"
start /usr/sbin/hostmibd "$src_running"
start /usr/sbin/snmpmibd "$src_running"
start /usr/sbin/aixmibd "$src_running"
-
2) snmpd is linked to snmpdv3ne, which is the default.
# ls -l /usr/sbin/snmpd
lrwxrwxrwx 1 root system 9 Jun 23 2023 /usr/sbin/snmpd -> /usr/sbin/snmpdv3ne
-
3) Configure snmpdv3.conf for SNMPv2c
Remove the comment from the internet line:
#VACM_VIEW defaultView internet - included -
-
Change this line from:
VACM_GROUP group1 SNMPv1 public -
-
Change to:
VACM_GROUP group1 SNMPv1 foo1234 -
-
Change this line from:
VACM_VIEW defaultView 1.3.6.1.4.1.2.6.191 - excluded -
-
Change to:
VACM_VIEW defaultView 1.3.6.1.4.1.2.6.191 - included -
-
Add these 3 lines to snmpdv3.conf:
The 3 lines can be added to the end of the file.
VACM_GROUP group2 SNMPv2c foo1234 -
VACM_ACCESS group2 - - noAuthNoPriv SNMPv2c defaultView - defaultView -
COMMUNITY foo1234 foo1234 noAuthNoPriv 0.0.0.0 0.0.0.0 -
-
4) Add this line to clsnmp.conf for testing. The file is not used external to AIX.
v2c 127.0.0.1 snmpv2c
-
5) Use the chssys command to assign the new community name to the DPI2 subagents in the ODM
# chssys -s aixmibd -a "-c foo1234"; chssys -s hostmibd -a "-c foo1234"; chssys -s snmpmibd -a "-c foo1234"
-
6) Stop and start the daemons in this order
# stopsrc -s aixmibd; stopsrc -s hostmibd; stopsrc -s snmpmibd
# stopsrc -s snmpd
-
# startsrc -s snmpd
# startsrc -s aixmibd; startsrc -s hostmibd; startsrc -s snmpmibd
-
# ps -ef | grep mibd
root 5177616 3539374 0 09:03:15 - 0:00 /usr/sbin/aixmibd -c foo1234
root 8913242 3539374 0 09:03:15 - 0:00 /usr/sbin/snmpmibd -c foo1234
root 9306592 3539374 0 09:03:15 - 0:00 /usr/sbin/hostmibd -c foo1234
-
7) Test SNMPv2c by sending a query back to itself over loopback.
Output similar to the following:
-
# clsnmp -h v2c -c foo1234 walk system
1.3.6.1.2.1.1.1.0 = IBM PowerPC CHRP Computer
Machine Type: 0x0800004c Processor id: 00FABFB24B00
Base Operating System Runtime AIX version: 07.02.0005.0103
TCP/IP Client Core Support version: 07.02.0005.0104
1.3.6.1.2.1.1.2.0 = 1.3.6.1.4.1.2.3.1.2.1.1.3
1.3.6.1.2.1.1.3.0 = 1700
1.3.6.1.2.1.1.4.0 = NULL
1.3.6.1.2.1.1.5.0 = tcp121.aus.stglabs.ibm.com
1.3.6.1.2.1.1.6.0 = NULL
1.3.6.1.2.1.1.7.0 = 72
1.3.6.1.2.1.1.8.0 = 300
1.3.6.1.2.1.1.9.1.2.1 = 1.3.6.1.4.1.2.3.1.2.1.1.3
1.3.6.1.2.1.1.9.1.2.2 = 1.3.6.1.4.1.2.6.191
1.3.6.1.2.1.1.9.1.2.3 = 1.3.6.1.2.1.25
1.3.6.1.2.1.1.9.1.2.4 = 1.3.6.1.4.1.2.3.1.2.1.6
1.3.6.1.2.1.1.9.1.3.1 = AIX SNMP Agent
1.3.6.1.2.1.1.9.1.3.2 = AIX Enterprise MIB Support subagent
1.3.6.1.2.1.1.9.1.3.3 = Host Resources DPI sub-agent Version 1
1.3.6.1.2.1.1.9.1.3.4 = AIX SNMP MIB SubAgent
1.3.6.1.2.1.1.9.1.4.1 = 0
1.3.6.1.2.1.1.9.1.4.2 = 300
1.3.6.1.2.1.1.9.1.4.3 = 300
1.3.6.1.2.1.1.9.1.4.4 = 300
-
# clsnmp -h v2c -v -c foo1234 walk system
sysDescr.0 = IBM PowerPC CHRP Computer
Machine Type: 0x0800004c Processor id: 00FABFB24B00
Base Operating System Runtime AIX version: 07.02.0005.0103
TCP/IP Client Core Support version: 07.02.0005.0104
sysObjectID.0 = 1.3.6.1.4.1.2.3.1.2.1.1.3
sysUpTime.0 = 6 minutes, 48 seconds (40800 timeticks)
sysContact.0 = NULL
sysName.0 = tcp121.aus.stglabs.ibm.com
sysLocation.0 = NULL
sysServices.0 = 72
sysORLastChange.0 = 3 seconds (300 timeticks)
sysORID.1 = 1.3.6.1.4.1.2.3.1.2.1.1.3
sysORID.2 = 1.3.6.1.4.1.2.6.191
sysORID.3 = 1.3.6.1.2.1.25
sysORID.4 = 1.3.6.1.4.1.2.3.1.2.1.6
sysORDescr.1 = AIX SNMP Agent
sysORDescr.2 = AIX Enterprise MIB Support subagent
sysORDescr.3 = Host Resources DPI sub-agent Version 1
sysORDescr.4 = AIX SNMP MIB SubAgent
sysORUpTime.1 = 0 seconds (0 timeticks)
sysORUpTime.2 = 3 seconds (300 timeticks)
sysORUpTime.3 = 3 seconds (300 timeticks)
sysORUpTime.4 = 3 seconds (300 timeticks)
-
# clsnmp -h v2c -c foo1234 walk aixpagingspace
1.3.6.1.4.1.2.6.191.2.4.1.0 = 95
1.3.6.1.4.1.2.6.191.2.4.2.1.1.1 = hd6
1.3.6.1.4.1.2.6.191.2.4.2.1.2.1 = rootvg
1.3.6.1.4.1.2.6.191.2.4.2.1.3.1 = hdisk0
1.3.6.1.4.1.2.6.191.2.4.2.1.4.1 = 512
1.3.6.1.4.1.2.6.191.2.4.2.1.5.1 = 2
1.3.6.1.4.1.2.6.191.2.4.2.1.6.1 = 1
1.3.6.1.4.1.2.6.191.2.4.2.1.7.1 = 1
1.3.6.1.4.1.2.6.191.2.4.2.1.8.1 = 1
-
# clsnmp -h v2c -v -c foo1234 walk aixpagingspace
aixPageThreshold.0 = 95
aixPageName.1 = hd6
aixPageNameVG.1 = rootvg
aixPageNamePV.1 = hdisk0
aixPageSize.1 = 512
aixPagePercentUsed.1 = 2
aixPageStatus.1 = 1
aixPageType.1 = 1
aixPageIndex.1 = 1
-
The working snmpdv3.conf and clsnmp.conf files can be used on other AIX LPARs.
For more information:
https://www.ibm.com/docs/en/aix/7.2?topic=files-snmpdv3conf-file
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Related Information
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SWG10","label":"AIX"},"Component":"","Platform":[{"code":"PF002","label":"AIX"}],"Version":"All Versions","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]
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Document Information
Modified date:
29 December 2023
UID
ibm17103665