encapsulation mode
Using STP, you can
configure ports within an STPD to accept specific BPDU encapsulations. The three
encapsulation modes are:
- 802.1D—This mode is used for backward compatibility with
previous STP versions and for compatibility with third-party switches using IEEE
standard 802.1D.
- EMISTP—Extreme Multiple Instance Spanning Tree Protocol mode is
an extension of STP that allows a physical port to belong to multiple STPDs by
assigning the port to multiple VLANs.
- PVST+—This mode implements PVST+ in compatibility with
third-party switches running this version of STP.