To identify redundant paths, the SVP generates and processes Bridge Protocol Data Units (BPDUs) on ports 1, 3, and 4. If the SVP connects to a network switch that has its spanning tree feature enabled, the network switch can block communications between the SVP and the network. An example of a configuration is Cisco switches equipped with the PortFast BPDU guard feature is enabled.
If you connect the SVP to the port of a network switch that has BPDU guard enabled, connect the SVP to a different port on the switch that does not have the BPDU guard feature enabled. If this does not resolve the problem, perform the following procedure to stop the SVP port from issuing BPDU frames.
Note: If you perform this procedure while the cable connection between the SVP and network switch is looped, it creates a logical loop of the network connection and the entire network becomes inoperable. Verify the network connection is not looped before performing this procedure.