User's Manual

Useful Information and References 676
Supported Devices 676
Agent Image Filenames 676
Key Considerations 677
Co-existence With Other TFTP Servers 677
Considerations When Downgrading Devices 677
Troubleshooting Device Problems Following Agent Update 677
Repeated Timeouts 678
17 USING 3COM NETWORK DIRECTOR ON A MULTI-SITE
N
ETWORK
Overview 681
Key Concepts 681
Multi-Site Networks 681
Local and Remote Sites 681
Issues with Managing a Multi-Site Network 682
3Com Network Director Support for Multi-Site Networks 682
Configurable Timeouts 683
Configurable Retries 684
Configurable Poll Rates for Active Monitoring 685
Configurable Monitoring Modes 685
Configurable Discovery Options 686
Configurable Monitor Thresholds 686
Components 687
Automatic WAN Link Discovery 687
Manual Layout of WAN Topology 688
Connecting Point-to-Point WAN Interfaces Together 688
Grouping Logically Connected WAN Interfaces Together 689
Restoring WAN Interface Representations after a Manual Layout of
WAN Topology 691
Manual Layout of WAN Topology and Rediscovery 692
Monitoring WAN links 692
Configuring WAN Link Monitors 693
Disabling Monitors on WAN Links 694
Configuration 694
Configuring Retries and Timeout Periods 694
Specifying Retries and Timeout Periods at the Whole Map Level 695