Spanning Tree Protocol (Stp); Overview Of The Spanning Tree Protocol; Spanning Tree Domains - Extreme Networks Summit Summit24 Installation And User Manual

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Spanning Tree Protocol (STP)

This chapter describes the following topics:
• Overview of the Spanning Tree Protocol on page 159
• Spanning Tree Domains on page 159
• STP Configurations on page 160
• Configuring STP on the Switch on page 162
• Displaying STP Settings on page 165
• Disabling and Resetting STP on page 165
Using the Spanning Tree Protocol (STP) functionality of the switch makes your network more fault
tolerant. The following sections explain more about STP and the STP features supported by
ExtremeWare.
NOTE
STP is a part of the 802.1D bridge specification defined by the IEEE Computer Society. To explain STP
in terms used by the 802.1D specification, the switch will be referred to as a bridge.

Overview of the Spanning Tree Protocol

STP is a bridge-based mechanism for providing fault tolerance on networks. STP allows you to
implement parallel paths for network traffic, and ensure that:
• Redundant paths are disabled when the main paths are operational.
• Redundant paths are enabled if the main path fails.

Spanning Tree Domains

The switch can be partitioned into multiple virtual bridges. Each virtual bridge can run an independent
Spanning Tree instance. Each Spanning Tree instance is called a Spanning Tree Domain (STPD). Each
STPD has its own root bridge and active path. Once the STPD is created, one or more VLANs can be
assigned to it.
Summit24e3 Switch Installation and User Guide 159