SNMP Classification using entPhysicalEntry table
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‎02-23-2017 05:55 AM
The Brocade switches our network is in love with didn't have entries in the SNMP System OID classification table. On initial discovery the "Name of the Model" field was being populated with the value from that is grabbed by the "SNMP - Classify" SNMP Probe from mgmt.mib-2.entityMIB.entityMIBObjects.entityPhysical.entPhysicalTable.entPhysicalModelName
So initally I looked at the input Queueu for ths SNMP classify probe found the SnmpObjectID and then registered the appropriate information into the SNMP System OID Classification table.
The problem is that about 25% of the switches apparently do not provide SnmpObjectID in the SNMP Classify probe.
My question is, how can I set the SNMP Classifier to be "Standard Network Switch" which then dumps it into the cmdb_ci_ip_switch table and set the Manufacturer and Model information based on mgmt.mib-2.entityMIB.entityMIBObjects.entityPhysical.entPhysicalTable.entPhysicalModelName. For example if entPhysicalModelName="40-1000925-05" then I know this is a Standard Network Switch, and, that the Manufacturer is Brocade and Model is "VDX 5740"
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‎02-24-2017 05:07 AM
If you cannot leverage or find the objectID then another option would be to setup Classification Criteria that might be able to help identify that we would classify a device as "Switch." In your case you might be able to setup classification to say entPhysicalModelName="40-1000925-05" then act as if this is a Switch. I would also say that you should most likely setup a new Classification for this scenario instead of editing the Standard Network Switch. Just make sure to add the probes that would normally kick off on these devices.
Create classification criteria for a Discovery definition
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‎02-27-2017 08:45 AM
I must be missing something, because I don't see in SNMP classification, the opportunity to build a classifier based on an arbitrary "navigation" ( such as mgmt.mib-2.entityMIB.entityMIBObjects.entityPhysical.entPhysicalTable.entPhysicalModelName) and compare it to a particular value (40-1000925-05).
I see where you can look for SNMP OID is *i.e. the value of 1.3.6.1.2.1.1.2), but not something relatively arbitrary.
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‎02-23-2022 06:17 AM
Sorry, I'm not going to answer your question. I hope you found the answer already as 5 years passed.
I'm facing a bit different issue for some of the Cisco switches.
How did you extract value from
mgmt.mib-2.entityMIB.entityMIBObjects.entityPhysical.entPhysicalTable.entPhysicalModelName ?
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‎02-23-2022 08:30 AM
Oh, I found it: SNMP - Classify sensor [discovery_sensor]