Reconfigure the switches in the configuration.

  1. Use only one cable or port trunk between single-forwarding and multiple-forwarding database devices.
  2. Configure the link with multiple, tagged VLANs.
  3. To increase network bandwidth of the connection between devices, use a trunk of multiple physical links.

Following these rules, the switch forwarding database always lists the switch MAC address on port A1 and the switch will send traffic to either VLAN on the switch.

Solution for single-forwarding to multiple-forwarding database devices in a multiple VLAN environment