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DES-3326S Layer 3 Fast Ethernet Switch User’s Guide
338 Understanding and Troubleshooting the Spanning Tree Protocol
switches A and B and two blocked ports per VLAN. This
increases the chance of a data loop.
In this example, the VLAN definitions are extended to switches
A and B. This gives only a single blocked port per VLAN and
allows the removal of all redundant links by removing switch A
or B from the network.