Question

If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?

A) Lowest IP address
B) Lowest MAC address
C) Highest IP address
D) Highest MAC address

Answer 1

In PVST, the root bridge is elected based on the lowest bridge priority.

Step-by-step explanation:

In PVST, the “Spanning Tree Protocol” (STP) is used to elect the root bridge. When no bridge priority is configured, the default value is used. The bridge with the lowest bridge ID becomes the root bridge. The bridge ID is a combination of the bridge priority and the MAC address. So, the bridge with the lowest bridge priority (not MAC or IP address) will become the root bridge.