After you configure the operation mode of VBST and start VBST, VBST calculates the spanning tree and prunes a network into a tree network to eliminate loops. Network planners can also set parameters such as the switch priority, port path cost, and port priority to adjust the spanning tree calculation result.
Before configuring basic VBST functions, connect ports and set the physical parameters of each interface to make the physical layer in Up state. For details, see Basic Configuration for Interfaces and Ethernet Interface Configuration in the S2720, S5700, and S6700 V200R019C10 Configuration Guide - Interface Management.