BPDU Tunneling
1.1 Why BPDU Tunneling To avoid loops in your network, you can enable the spanning tree protocol (STP) on your device. However, STP gets aware of the topological structure of a network by means of bridge protocol data units (BPDUs) exchanged between different devices and the BPDUs are Layer 2 multicast packets, which can be received and processed by all STP-enabled devices on the network. This prevents each network from correctly calculating its spanning tree. As a result, when redundant links exist in a network, data loops will unavoidably occur. By allowing each network to have its own spanning tree while running STP, BPDU tunneling can resolve this problem. l BPDU tunneling can isolate BPDUs of different customer networks, so that one network is not affected by others while calculating the topological structure. l BPDU tunneling e...