Application/Bandwidth RequirementsBackup and ResiliencyEnterprise Segmentation RequirementsMapping VLANs to VPNs in the CampusAccess TechnologiesFrame RelayATMDedicated Circuit from CE to PEATM PVC from CE to PEFrame Relay PVC from CE to PEMetro EthernetQoS RequirementsBandwidthPacket Delay and JitterPacket LossEnterprise Loss, Latency, and Jitter RequirementsQoS at Layer 2Subscriber Network QoS DesignBaseline New ApplicationsDevelop the NetworkSecurity RequirementsTopological and Network Design ConsiderationsSP-Managed VPNsMultiprovider ConsiderationsExtranetsCase Study: Analyzing Service Requirements for Acme, Inc.Layer 2 DescriptionExisting Customer Characteristics That Are Required in the New NetworkDefenseCo’s Backbone Is a Single Autonomous SystemReasons for Migrating to MPLSEvaluation Testing PhaseRouting ConvergenceJitter and DelayCongestion, QoS, and Load TestingFirst ScenarioSecond ScenarioThird ScenarioSubjective MeasuresVendor Knowledge and Technical PerformanceEvaluation ToolsTTCPLessons LearnedTransition and Implementation Concerns and IssuesPost-Transition ResultsSummaryReferences