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Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 60 30 WAN Backbone Options: Frame Relay or ATM Switching Multiservice Switched Frame Relay or ATM Backbone using IGX 8400 or BPX 8600 Carrier Class Redundancy Legacy Voice and Data Low speed links ATM Traffic Management Frame Relay Congestion Control (CLLM and eLMI) ATM /FR Interworking L2 QoS 102 1122_06F9_c2x OC-3 61 © 1999, Cisco Systems, Inc. WAN Backbone Options: Packet Over SONET • Uses GSR 12000, 7500, or ISR 3303 at the core • 7200/7500 at the edge GSR 12000 • Optimized for IP traffic • Excellent bandwidth, performance and network efficiency with SRP/DPT ISR 3303 OC-12 STM4 POS • IP QoS/MPLS for multiservice support 7500 102 1122_06F9_c2x © 1999, Cisco Systems, Inc.

All rights reserved. Printed in USA. scr 90 45 QoS on the WAN • TDM: QoS integral to the transmission technology • Frame Relay: Not easily engineered on top of the transmission technology • ATM: Integral to the transmission technology • SONET: Classical SONET integral QoS POS IP QoS 102 1122_06F9_c2x 91 © 1999, Cisco Systems, Inc. QoS Building Blocks • Backbone speed and scale • Packet classification • Bandwidth management and admission control • Congestion management • Queue management • Granular measurements 102 1122_06F9_c2x © 1999, Cisco Systems, Inc.

87 Modeling: Conclusions • Modeling is critical part of overall Network Management and thus facilitates efficient Network Deployment • End-to-end modeling is strategic, can form basis for new, value added applications Network Auditing Service Capacity Modeling End to End Integration 102 1122_06F9_c2x © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 88 44 Network Planning and Auditing • Sophisticated network capacity planning critical as services expand • Reduce provisioned network resources being misused, not billed, or not used • Can ensure services and resources are available, especially in areas with long service activation periods • Cost effective end-to-end modeling and planning is a strategic differentiator and enables tactical advantage by facilitating cost reduction 102 1122_06F9_c2x 89 © 1999, Cisco Systems, Inc.

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