Network Management

Monitor Arista switches and routers with multiple VRFs over SNMPv3 in SolarWinds UDT

This is to poll the IP Addresses from VRFs of Arista layer 3 capable switches and routers over SNMPv3 in SolarWinds UDT.

First published date

1/29/2026 9:53 PM

Last published date

1/29/2026 10:16 PM

Overview

1. By design, standard UDT-based polling gathers information for both MAC and IP endpoints through SNMP polling of Bridge MIB-based OIDs, and it is not applicable to endpoints on a VLAN or a VRF.
2. For a VLAN or a VRF, UDT uses a context SNMP request against a device to gather information specifically for those VLANs and VRFs. This method allows it to gather information specific to a particular VLAN or VRF from a device that a standard poll would not.

Product section

User Device Tracker

Resolution

For the Arista device configuration, detailed steps must be provided by your vendor. Arista configuration might vary by version of your Arista EOS:
1. Make sure you have this on the Arista device: "Create an SNMPv3 view, group, and user."
2. Define one SNMP context per VRF you want UDT to see.

On your SolarWinds Platform web console:
1. Add the Arista node in SolarWinds with SNMPv3.
  • In SolarWinds, go to Settings → Manage Nodes → Add Node.
  • Enter the management IP of the Arista.
  • Under SNMPv3 Credentials:
    • User name: sw-udt <- example user changed it according to your requirements
    • Authentication: SHA + <AUTH_PASSWORD>
    • Privacy: AES + <PRIV_PASSWORD>
    • Context: leave blank here (this is the default context for the base node).
  • Test the credentials; they should succeed.
  • Complete the wizard and ensure:
    • The node is polled by SNMPv3.
    • Under List Resources, routing/VRF-related resources are enabled if available.
2. Configure SNMP contexts (per VRF) for that node, all using the same SNMPv3 user but different context strings.
  • Go to Settings → Manage Nodes.
  • Find your Arista node → click its name → Edit Properties.
  • Scroll down to the SNMP / Additional Polling / SNMP Contexts section (label varies by version).
    You should see an option to add additional SNMP credentials/contexts.
  • For each VRF you exposed on Arista, add a row:
    • Protocol: SNMPv3
    • User name: sw-udt <- example user changed it according to your requirements
    • Auth/Priv: same as base (SHA + AES and the same passwords)
    • Context: the context string you configured, e.g.:
      • VRF-CUSTA
      • VRF-CUSTB

  • Save/Submit.

3. Wait for 30 minutes for your UDT to poll the IP addresses information from your VRF via SNMPv3 context polling.