Specifying Retries and Timeout Periods at the Subnet Level 697Specifying Retries and Timeout Periods at the Device Level 699Specifying Retries and Timeout Periods in the Network DiscoveryWizard 700Determining Appropriate Retry and Timeout Periods 701Issues and Techniques when Configuring the Retry/TimeoutHierarchy 704Configuring Monitoring Modes and Poll Rates 705Determining Monitoring Modes and Poll Rates 706Issues and Techniques when Configuring Monitoring Modes and PollRates 709Configuring Discovery 710Configuring Discovery Options in Multi-Site Networks 710Scheduling Discoveries in Multi-Site Networks 713Configuring Monitor Thresholds 714Examples 715Grouping Frame Relay Interfaces Together 715Discovering a Remote Site 727Configuring Service Monitoring Thresholds Using HistoricalReports 742Useful Information and References 748Supported WAN Interface Types 748Key Considerations 750Problems with Discovering Remote Sites 750Problems with Discovering WAN Routers 75118 NBX SUPPORTOverview 753Key Concepts 754How 3Com Network Director Discovers the Phone Network 754How 3Com Network Director Represents the Phone Network Icons 754NBX Call Processor 755Line Cards 755Analog Terminal Adapter and Analog Terminal Card 756NBX Phones and Attendant Consoles 756NBX Applications 756How 3Com Network Director Monitors the Phone Network 756Components 757
