User's Manual

Useful Information and References 652
User Priority Field 652
DiffServ Codepoint Field 653
Determining Field Values for Applications 654
3Com Network Director Classifier Rules for NBX Phone Traffic 654
3Com Network Director Service Levels 655
Configuration Levels for Supported 3Com Devices 655
Key Considerations 657
Resource Warnings 657
Why Errors Can Occur When Adding a Server 659
Potential Hazards When Blocking Traffic To and From Servers 659
Servers That Cannot be Selected for Blocking 660
Potential Hazards of Blocking Application Traffic 661
Potential Hazards of Blocking SNMP, HTTP and Telnet 662
16 UPGRADING DEVICE SOFTWARE
Overview 663
Key Concepts 664
Agent Image Files 664
The Internal TFTP Server 664
Scheduling 664
Components 665
Agent Update Wizard 665
Introduction Step 665
Update Type Step 666
Specify Devices and Agent Versions Step 667
Change Agent Version Step 669
Scheduling Step 670
Summary Step 671
The Progress Dialog Box 672
Agent Update Events 673
Agent Update Reports 673
Agent Update Summary report 673
Agent Audit report 674
Examples 674
Update all Switch 4400’s with a New Agent 674
Detecting and Downgrading a Problem Device 675