Updated 802.1t

IEEE 802.1t is enabled by default on Extreme Networks switch devices. This updated Spanning Tree protocol supports multiple Spanning Trees, more switch port density, and faster port speeds.

802.1t includes the following updates:

• New bridge identifier encoding (4-bit priority, 12-bit system ID extension, 48-bit bridge address)
• New port identifier encoding (4-bit priority, 12-bit port number)
• Bridge detection state machine (for edge port identification)
• Path cost default values (the ability to switch between 802.1t and 802.1d mode and cost values)