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Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide User Manual

Page 275

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FIGURE 41 Topology with edge ports

However, if any incoming RST BPDU is received from a previously configured Edge port, 802.1W
automatically makes the port as a non-edge port. This is extremely important to ensure a loop free
Layer 2 operation since a non-edge port is part of the active RSTP topology.

The 802.1W protocol can auto-detect an Edge port and a non-edge port. An administrator can also
configure a port to be an Edge port using the CLI. It is recommended that Edge ports are configured
explicitly to take advantage of the Edge port feature, instead of allowing the protocol to auto-detect
them.

Spanning Tree Protocol

FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide

275

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