Information About Stp Extensions - Cisco AJ732A - MDS 9134 Fabric Switch Configuration Manual
Cisco nexus 5000 series switch cli software configuration guide, nx-os 4.0(1a)n1 (ol-16597-01, january 2009)
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Configuring STP Extensions
Cisco has added extensions to the Spanning Tree Protocol (STP) that make convergence more efficient.
In some cases, even though similar functionality may be incorporated into the IEEE 802.1w Rapid
Spanning Tree Protocol (RSTP) standard, we recommend using these extensions. All of these extensions
can be used with both RPVST+ and MST.
The available extensions are spanning tree port types, Bridge Assurance, BPDU Guard, BPDU Filtering,
Loop Guard, and Root Guard. Many of these features can be applied either globally or on specified
interfaces.
Note
Spanning tree is used to refer to IEEE 802.1w and IEEE 802.1s. If the text is discussing the IEEE 802.1D
Spanning Tree Protocol, 802.1D is stated specifically.
This chapter includes the following sections:
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See
Note
Chapter 9, "Configuring MST"
Information About STP Extensions
This section discusses the following topics:
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OL-16597-01
Information About STP Extensions, page 10-1
Configuring STP Extensions, page 10-5
Verifying STP Extension Configuration, page 10-13
Chapter 8, "Configuring Rapid PVST+"
Understanding STP Port Types, page 10-2
Understanding Bridge Assurance, page 10-2
Understanding BPDU Guard, page 10-3
Understanding BPDU Filtering, page 10-3
Understanding Loop Guard, page 10-4
Understanding Root Guard, page 10-5
C H A P T E R
for complete information on STP and Rapid PVST+ and
for complete information on MST.
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
10
10-1
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