January 17, 2012

1.2.9 Loop Protection

Similar to flood guards, loop protection is a feature that works in layer 2 switching configurations and is intended to prevent broadcast or network loops which occur when there is more than one network path between two network hosts.

The Spanning Tree Protocol (STP) is an example of a loop protection method. Its goal is to ensure loop-free bridged Ethernet LANs. It operates at the data link layer and makes sure there is only one active path between two stations.


  • CompTIA Security+ Review Guide: Exam SY0-301, Second Edition by James M. Stewart
  • CompTIA Security+ Study Guide: Exam SY0-301, Fifth Edition by Emmett Dulaney

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