Читать книгу CCNP Enterprise Certification Study Guide: Implementing and Operating Cisco Enterprise Network Core Technologies - Ben Piper, David Higby Clinton - Страница 79

Cisco has added a few extra features to IOS that let you customize Spanning Tree behavior and prevent loops in certain edge cases:

 Root Guard

 BPDU Guard

 BPDU Filter

 Unidirectional Link Detection and Loop Guard