Elect a Root Port from Multiple Equal-Cost Paths

• Lowest sender BID (Bridge ID)
• Lowest sender port priority
• Lowest sender port ID

2

When a switch has multiple equal-cost paths to the root bridge, the switch will determine a port using the following criteria:

Range 0 to 240 in increments of 16 (0, 16, 32, 48, 64, 80, 96 ...)

Default is 128

Notice we now have 2 Priorities: Bridge Priority

and

Port Priority