VMware SPAN Port Configuration

For SPAN and combination recording, the server must have one or more SPAN ports connected to the second NIC. The SPAN port must provide all the RTP packets related to the calls being made. If the data is not available, the system shows that the call was made, but does not contain any audio data.

Navigate to the control for the vSwitch and ensure that the following in Default Policies are all set to Accept.

  • Promiscuous Mode
  • MAC Address Changes
  • Forged Transmits

Navigate to the Virtual Machine Properties:

  1. Ensure that there are two network adapters
  2. Ensure that each adapter is set to the correct Vlan

Please refer to Cisco documentation Configuring SPAN and RSPAN for more details.

In a non-virtual network environment by default eth0 is connected to local Intranet network and eth1 is connected to the Span-port of the switch. This Span-port mirrors the voice traffic that we should record.

Important:If deploying an Active recording solution, SPAN ports are not required. Combination solutions, require both Passive (SPAN) and Active configuration.