---
sourceDocument: Yokohama IT Operations Management
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/yokohama/it-operations-management

 Release :

    - yokohama

ft:locale :

    - en-US

ft:publication_title :

    - Yokohama IT Operations Management

ft:clusterId :

    - itom

bundleId :

    - itom

workflow :

    - Technology


---

# SNMP probes

# SNMP probes {#ariaid-title1}

* Release version: Yokohama
* 
* Updated January 30, 2025
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

The SNMP probes use the SNMP protocol to query a particular device for a list of OIDs, which are then traversed and the results passed back to the sensors. MID Servers support all SNMP protocol versions by default. You can set a MID Server to only support specific versions of SNMP.{#c_SNMPProbe__ph_snmp-probe-intro}  
Discovery supports SNMP versions 1, 2c, and 3. The default value is ALL. If you select one of the versions, but don't have that version's credentials, the Use SNMP Version reverts back to ALL.  
Note:  
SNMP version credentials must be active=true. If a particular version is inactive, it will also revert back to ALL. A message will appear similar to: `--- No SNMP credentials of type 'snmpv3' are active in this
instance. Setting Use SNMP version back to All`.

## SNMP patterns

The Network Router pattern replaces the several SNMP-related probes for the discovery of routers and switches. See [Available discovery
patterns](https://servicenow-prod.fluidtopics.net/apXXo5Qg1EKex2K~T9~EaQ "ITOM Visibility comes with an extensive library of patterns.") for a list of patterns.{#c_SNMPProbe__snmp-probe-patterns}
* **[SNMP probe parameters](https://servicenow-prod.fluidtopics.net/_3xzWcOPDE1bbW5Kj3aXbQ)**   
  This list of parameters may be passed to the SNMP probes.
* **[Load a MIB module](https://servicenow-prod.fluidtopics.net/Rqui8P06klvXs8lbgm72~A)**   
  You can load an additional Management Information Base (MIB) module by creating a new ecc_agent_mib record and attaching the actual MIB file to the record.
* **[SNMP probe MIB modules](https://servicenow-prod.fluidtopics.net/ryQgUP7mfta9V2JOstCNJA)**   
  A management information base module (MIB) is a database that is used to manage elements in a network.