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Configure external network traffic with the Open vSwitch using SPAN to allow Virtual Network Sensor to monitor data.

Note
Note
The following instructions are valid as of October 2023.
Before you begin, make sure you have prepared a vSwitch.

Procedure

  1. Access Terminal on the host machine.
  2. Verify the name of the network interface you want to configure as the SPAN destination and source.
    1. List virtual machines.
      virsh list --all
    2. Check the name of the network interface for the virtual machines.
      virsh domiflist VM-1
    3. Repeat for all other virtual machines (VM-2, VM-3, etc.).
  3. Clear mirror settings.
    ovs-vsctl clear bridge ovsbr mirrors
  4. Configure SPAN settings.
    ovs-vsctl \
     -- set bridge ovsbr mirrors=@m \
     -- --id=@s1 get port vnet1 \
     -- --id=@d get port vnet0 \
     -- --id=@m create mirror name=m0 select-dst-port=@s1 select-src-port=@s1 output-port=@d select-all=true
    Note
    Note
    The example code uses vnet0 as the destination and vnet1 as the source. You can change the port names to suit the needs of your deployment.
  5. Verify mirror settings.
    ovs-vsctl -- list bridge
    ovs-vsctl -- list mirror