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Configure the Auvik collector to scan multiple subnets and VLANs


A few tweaks to your setup and you’re good to go!

Have multiple subnets and VLANs to monitor but you’re running a single collector? Fear not! With a few tweaks to your virtual machine’s adapter configuration and the collector’s /etc/network/interfaces file, we can get you scanning your different network segments in a jiffy.

We recommend you take a snapshot backup of your VM before making any changes to your collector.

These steps are tailored to VMware VSphere ESXi, but can be adapted to other platforms.

  1. Shutdown your VM using Option 3 from the collector menu.
  2. Configure a second bridged network adapter.
  3. Configure your Ethernet switches with the VLAN IDs that your ESXi hosts should use. If you're using VLANs, the NICs must be on trunking ports.
  4. In the System Customization menu, select Configure Management Network by using the keyboard arrows. Press Enter.
  5. In the Configure Management Network menu, select VLAN (option). Press Enter.
  6. In the VLAN ID input text box, type the VLAN ID of the virtual LAN that your ESXi should use. Press Enter.
  7. Power on your collector and let it boot up.
  8. Select Option 6 and enter "y" to enter the bash shell from the colector menu.
  9. Edit /etc/network/interfaces to add a new interface called eth1, with appropriate addressing and gateway information depending on your network configuration. Refer to this article for configuration and syntax details. Save the file.
    • Make sure you set up the correct routes for the secondary interface. Presumably eth0 will remain as the default gateway.
  10. Exit the shell ($exit).
  11. Select Option 4 and type "y" to restart the virtual machine.
  12. Allow the collector to initialize and open your Auvik account page online (https://[yourPrefix] Verify that the additional subnet is visible.

References: Steps 3-6 are adapted from

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