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You are here: Home / SWITCH / Module 4 / Advanced STP – RSTP Topology Changes

Advanced STP – RSTP Topology Changes

The Topology Change (TC) detection and propagation mechanisms used in RSTP are different from those used in traditional STP. It is important to understand the differences between these two methods of TC detection and propagation.
IEEE 802.1D Topology Changes
Although described in detail in the previous chapter, this section summarizes the traditional Spanning Tree Protocol TC process. In traditional STP, when a port moves to the Forwarding or Blocking states, the switch originates a TCN BPDU. This TCN BPDU is sent out of the Root Port toward the Root Bridge.

The TCN BPDU is relayed until it reaches the . . .

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