Allied Telesis AT-S63 User Manual
Page 526
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Chapter 22: Spanning Tree and Rapid Spanning Tree Protocols
526
Section V: Spanning Tree Protocols
You can avoid this problem by not activating spanning tree or by
connecting VLANs using tagged instead of untagged ports. (For
information on tagged and untagged ports, refer to Chapter 24, “Port-
based and Tagged VLANs” on page 589.)
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