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SNMP Communication to PDUs

Before connecting or configuring a Packet Power WNC, SNMP data communication needs to be verified by performing an SNMP walk using the iReasoning MIB browser. Follow these steps to verify the SNMP communication of your PDU.

Step 1: Download iReasoning MIB Browser

Visit: iReasoning MIB browser to download the iReasoning MIB Browser application.

This software is used to verify the communication of the PDU.

Step 2: Connect PC directly to the PDU

Using a Windows PC, connect the PC’s network port to the PDU’s network port using a network cable. Make sure you have a direct connection to the PDU with no router or network switch in between the PC and PDU.

Step 3: Assign Static IP to PC’s Network Port

In order to communicate to the PDU you will need to set the subnet of your PC’s network port to match the IP of the PDU. This can be done under Network Settings → Adapter Settings.

Take note of your existing network configuration so you can revert your changes after this process.

  • Access Network Settings: Go to your PC's Network Settings and then to Adapter Settings. You're looking for the settings that control your PC's network card.

  • Record Current Settings: Before making changes, note down your current network configuration (IP address, gateway, subnet mask). This information is essential for restoring your original settings later.

  • Modify IPv4 Settings:

    • Find the network adapter connected to the PDU (usually listed under LAN, High-Speed Internet, or Local Area Connection).

    • Open the adapter's properties, then locate and select 'Internet Protocol Version 4 (TCP/IPv4)'.

    • Choose to 'Use the following IP address' and enter an IP address that matches the PDU’s subnet. This typically involves matching the first three sets of numbers in the IP address and altering the last set to a unique value within the same subnet. Example) PDU IP: , then set your static IP on the PC to (this is the preset IP of the WNC).

    • Also, enter the appropriate Subnet Mask and Default Gateway that align with your PDU’s settings.


  • Verify Connection:

    • After applying these changes, check if you can access the PDU by typing its IP address into a web browser or by using the 'ping' command from the command prompt.

See: For detailed instructions on assigning a static IP on Windows.

Step 4: Establish Communication to PDU using MIB Browser

Using your PDU's IP address ensure you can access the PDU from your Windows PC using the MIB Browser.

Windows MIB Browser.png

In the iReasoning app set the following:

  • Address: The IP address of the PDU.

Under the Advanced tab set the following:

  • Port: The port through which SNMP communicates. The default port is 161.

  • Read Community: A password exclusive to your device. The default value is public.

  • SNMP version: Select SNMP v1 or v2 depending on your device. The default value is 1.

These settings ensure that your PC can communicate with the PDU using the SNMP protocol, allowing for effective network management and data retrieval.

Step 5: SNMP Walk

Performing an SNMP walk is a way to query a device for information on all the SNMP objects it supports. This step is crucial to ensure your PDU is correctly reporting data.

  • On the iReasoning MIB browser, after entering the PDU IP address, select the “SNMP Walk” Operation and.

  • Click “Go”. This action will prompt the MIB Browser to query the PDU for all the SNMP objects it has.

  • The browser will then populate a table with values directly from your PDU. These values are the current readings and statuses from your PDU, which are essential for monitoring and troubleshooting.

Step 6: Verify results

Once you have the SNMP walk results, it's essential to verify them against expected values for your specific device. This ensures that your PDU is functioning correctly and that the SNMP walk has been successful.

See a list of supported devices here: Wireless Network Connector | Supported-Devices

  • Go to supported device list

  • Refer to the “Configuration Instructions” column. Select the link that has the WNC configuration instructions for your PDU.

  • Go to the “Readings Reported” section to find a list of WNC supported OIDs.

  • Search the SNMP walk results for all supported OIDs.

  • Compare the OIDs and their corresponding values from the SNMP walk results with the expected OIDs and values listed for your device.

This comparison helps ensure that your PDU is reporting data correctly and that the SNMP walk has captured the necessary information.

Step 7: Restore Original Network Configuration

  • Disconnect the Windows PC from the PDU.

  • Using the original network configuration noted from step 3, restore your network configuration to it’s previous settings.


Firewall blocking communications

Ensure you do not have any firewalls that may interfere with the PDU Communication.

See: Turning Windows Firewall "off"

Connection cant be established

If You are having issues with the connection, some PDUs have an “event log” feature which can typically be found on their web console. See the manufacturers instructions of your PDU for more details on how to access this feature for further diagnosing network trouble.

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