Configuring Spanning Tree - Cisco WS-C6506 Software Manual

Configuring Spanning Tree

This chapter describes the IEEE 802.1D bridge Spanning Tree Protocol (STP) and how to use and
configure Cisco's proprietary spanning-tree protocols, Per VLAN Spanning Tree + (PVST+) and
Multi-Instance Spanning Tree Protocol (MISTP), on the Catalyst 6500 series switches.
For information on configuring the spanning-tree PortFast, UplinkFast, and BackboneFast features, see
Note
Chapter 9, "Configuring Spanning-Tree PortFast, UplinkFast, BackboneFast, and Loop Guard."
This chapter consists of these sections:
• Understanding How Spanning Tree Protocols Work, page 7-2
• Understanding How PVST+ and MISTP Modes Work, page 7-12
Understanding How Bridge Identifiers Work, page 7-14
•
Understanding How Multiple Spanning Tree Works, page 7-16
•
Understanding How BPDU Skewing Works, page 7-24
•
Understanding How Layer 2 PDU Rate Limiting Works, page 7-25
•
Configuring PVST+ on the Switch, page 7-26
•
Configuring Rapid-PVST+ on the Switch, page 7-33
•
• Configuring MISTP-PVST+ or MISTP on the Switch, page 7-34
Configuring a Root Switch, page 7-44
•
Configuring Spanning-Tree Timers on the Switch, page 7-49
•
Configuring Multiple Spanning Tree on the Switch, page 7-51
•
Configuring BPDU Skewing on the Switch, page 7-59
•
Configuring Layer 2 PDU Rate Limiting on the Switch, page 7-61
•
For complete syntax and usage information for the commands that are used in this chapter, refer to the
Note
Catalyst 6500 Series Switch Command Reference publication.
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C H A P T E R
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
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