fr_atm 技能评估体系

1、 Approaches to Interworking Interworking Market Drivers The Benefits of Interworking The Technology of Interworking (Technical Submodule)Presentation Overview Frame Relay PVC to ATM Network Interworking Scenario 1 and 2 SVC Interworking Planned Frame Relay PVC to ATM Service Interworking Transparent

2、 and Translation Modes SVC Interworking PlannedApproaches To Interworking The Protocol In and Out of the Network is Frame Relay ATM is Used in the Core of the Network to Improve Scalability and Economies of ScaleFRAME RELAYATMFRAME RELAYATMFRAME RELAYFR UNIFR UNINetwork Interworking Each Location Us

3、es the Technology Best Suited to its Applications and Needs The Interworking Function Converts Transparently Between the ProtocolsFrame RelayATMFRAME RELAYATMService Interworking Fast Growth of Frame Relay Services Concentration of Low Speed Remote Connections Hybrid NetworksThe Need For Interworkin

4、g Frame Relay is Driving the Deployment of ATM Networks High Speed ATM Backbones Used by Service Providers to Improve Economies of Scale and Network Scalability Uses Network InterworkingFast Growth Of Frame Relay ServicesConcentration Of Low Speed Remote SitesAllows High Speed Access at Main Locatio

5、n, Low Speed Access at Remote SitesEnsures Each Site is Provided a Solution that Delivers the Best Price PerformanceLowers Overall Cost of Network Ownership Requires Service InterworkingATMFrame RelayRemote Site Concentration Example Hybrid Networks Combine Frame Relay, ATM, and Private Lines to Opt

6、imize Price/PerformanceATMFrame RelayHybrid Networks Provides Investment Protection Connectivity Between Frame Relay and ATM Locations Smooth Evolution Between Technologies Improves Network Scalability Lowers Cost of Network Ownership Ensures Optimization of Network Price/Performance on a Site by Si

7、te BasisThe Benefits Of Interworking Networking Interworking Scenario 1 Scenario 2 Service Interworking Transparent Mode Translation ModeA Technical View Of InterworkingStandards UpdateRFC 1490 is Used at Both CPE End PointsATM NetworkFRNetworkFRNetworkQ.922CorePHYPHYATMSARCPCSFR-SSCSQ.922CorePHYUpp

8、er LayersPHYSICALATMUpperLayersQ.922CorePHYPHYPHYATMSARCPCSFR-SSCSQ.922 CoreIWF: Interworking FunctionFR/ATM PVC Network Interworking Scenario 1Standards UpdateRFC 1490 is Used at Both CPE End PointsATM NetworkFRNetworkQ.922CorePHYPHYATMSARCPCSFR-SSCSPHYATMSARCPCSFR-SSCSUpper LayersPHYSICALATMUpperL

9、ayersQ.922CorePHYIWF: Interworking FunctionFR/ATM PVC Network Interworking Scenario 2ATM NetworkFRNetworkCorePHYPHYATMSARCPCSNull SSCSPHYATMSARCPCSNull SSCSUpper LayersPHYSICALATMUpperLayersQ.922CorePHYIWF: Interworking FunctionFR/ATM Service InterworkingTransparent ModeATM NetworkFRNetworkQ.922CorePHYPHYATMSARCPCSNull SSCSPHYATMSARCPCSNull SSCSUpper LayersPHYSICALATMUpperLayersQ.922CorePHYRFC 1490/FR - Translate Encapsulation