3Com 4500G Family Configuration Manual page 898

Features
PoE
NQA
NTP
Hotfix
Cluster Management
The Power over Ethernet (PoE) feature enables the power sourcing
equipment (PSE) to feed powered devices (PDs) from Ethernet ports
through twisted pair cables. This document describes:
PoE overview
Configuring the PoE Interface
Configuring PoE power management
Configuring the PoE monitoring function
Online upgrading the PSE processing software
Configuring a PD Disconnection Detection Mode
Enabling the PSE to detect nonstandard PDs
NQA analyzes network performance, services and service quality by
sending test packets to provide you with network performance and
service quality parameters. This document describes:
NQA Overview
Configuring the NQA Server
Enabling the NQA Client
Creating an NQA Test Group
Configuring an NQA Test Group
Configuring the Collaboration Function
Configuring Trap Delivery
Configuring the NQA Statistics Function
Configuring Optional Parameters Common to an NQA Test Group
Scheduling an NQA Test Group
Network Time Protocol (NTP) is the TCP/IP that advertises the accurate
time throughout the network. This document describes:
NTP overview
Configuring the Operation Modes of NTP
Configuring Optional Parameters of NTP
Configuring Access-Control Rights
Configuring NTP Authentication
Hotfix is a fast, cost-effective method to fix software defects of the device
without interrupting the running services. This document describes:
Hotfix Overview
One-Step Patch Installation
Step-by-Step Patch Installation
Step-by-Step Patch Uninstallation
One-Step Patch Uninstallation
A cluster is a group of network devices. Cluster management is to
implement management of large numbers of distributed network devices.
This document describes:
Cluster Management Overview
Configuring the Management Device
Configuring the Member Devices
Configuring Access Between the Management Device and Its
Member Devices
Adding a Candidate Device to a Cluster
Configuring Advanced Cluster Functions
Description