Chapter 10. Protecting the Spanning Tree Protocol Topology

<feature><title>This chapter covers the following topics that you need to master for the CCNP BCMSN exam:</title>

  • Root Guard—. This section discusses how to protect the STP topology against unexpected switches advertising to become the Root Bridge.

  • BPDU Guard—. This section covers unexpected STP advertisements on switch ports configured for PortFast, where single hosts connect.

  • Loop Guard—. This section discusses how to protect the STP topology against the loss of BPDUs from the Root Bridge on a switch port.

  • UDLD—. This section presents a feature to detect and protect against unidirectional, switch-to-switch links.

  • BPDU Filtering—. This section explains how to filter BPDUs on a switch port ...

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