BPDU Type (1 byte) (BPDU)

Protocol: BPDU (Spanning Tree) BPDU PCI

Field: BPDU type

Length: 1 byte

Contents: type of BPDU.

Since there are different types of BPDU, they must be distinguished:

> 00 h Configuration BPDU

> 01 h Topology Change Notification BPDU