Network Device discovery using SNMP - can I force discovery not to use SNMP V1 but only V2 for dicov

Gideon van Zyl
Tera Contributor

‎06-25-2025 12:09 AM

Hi,

 

I have a customer where we are doing discovery using SNMP for discovering Network devices. They however have a requirement that we not use V1 and it creates errors on Firewalls when we do. Is there any way to only use V2 for discovery?

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Selva Arun
Mega Sage
Mega Sage

‎06-25-2025 10:05 AM

Hi Gideon,

Thanks for your question! ServiceNow Discovery supports SNMP versions 1, 2c, and 3. By default, Discovery tries all versions (v1, v2c, and v3) unless you specify otherwise.

 

To restrict Discovery to only use SNMP v2c, you can do the following:

  1. Create SNMP v2c Credentials:
    Use the SNMP Community Credentials (Password Only) type to set up your SNMP v2c community string.

  2. Assign Credentials and Set SNMP Version:
    In your Discovery schedule, set the Use SNMP Version field to v2c to ensure Discovery only uses SNMP v2c for that scan.

  3. MID Server Settings (Optional):
    You can also configure MID Server parameters to limit supported SNMP versions if needed.

This setup ensures Discovery uses only SNMP v2c and avoids SNMP v1, which should help prevent the firewall errors you’re seeing.

 

SNMP support for Discovery

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Thank you for your consideration.


Selva Arun

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