3Com 9100 Network, Configuration, Example, Spanning Tree Protocol STP, Quality of Service QoS

18CHAPTER 1: SWITCH 9100 OVERVIEW

	Spanning Tree Protocol (STP)
	The Switch 9100 supports the IEEE 802.1d Spanning Tree Protocol (STP),
	which is a bridge-based mechanism for providing fault tolerance on
	networks. STP allows you to implement parallel paths for network traffic,
	and ensure the following:
	■ Redundant paths are disabled when the main path is operational.
	■ Redundant path is enabled if the main traffic paths fail.
	For more information on STP, refer to Chapter 6.
	Quality of Service (QoS)
	The Switch 9100 has a Policy-Based Quality of Service (QoS) feature that
	enables you to specify service levels for different traffic groups. By
	default, all traffic is assigned the "normal" QoS policy profile. If needed,
	you can create other QoS policies and apply them to different traffic types
	so that they have different guaranteed minimum bandwidth, maximum
	bandwidth, and priority.
	For more information on QoS, refer to Chapter 7.
Network	This section describes where to position the Switch 9100 within your
Configuration	network. One common use of the Switch 9100 is on a Gigabit Ethernet
Example	backbone. Figure 1 shows an example of a Gigabit Ethernet backbone
	within a building.