Cisco - IXC Architecture 1503

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77 Source: WorldCom/UUnet 1503 0925_04F9_c1 © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 78 39 Source: WorldCom/UUnet 1503 0925_04F9_c1 79 © 1999, Cisco Systems, Inc. Verio Backbone Source: Verio 1503 0925_04F9_c1 © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 80 40 Source: AT&T/TCG CERFnet 1503 0925_04F9_c1 © 1999, Cisco Systems, Inc. 81 Source: Intermedia/Digex 1503 0925_04F9_c1 © 1999, Cisco Systems, Inc.

Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 82 41 Source: Bell Atlantic 1503 0925_04F9_c1 © 1999, Cisco Systems, Inc. 83 Internet Exchange Points 1503 0925_04F9_c1 © 1999, Cisco Systems, Inc. Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 84 42 ISP/IXC Interconnection Points NAP ISP Z CIX ISP D ISP C ISP B MAE West ISP A NAP MAE West Source: WorldCom MAE Services 1503 0925_04F9_c1 85 © 1999, Cisco Systems, Inc. Exchange Points Generally… • Do not include peering agreements with any of the ISP’s who are connected Peering • Do not include transit with any of the ISP’s who are connected Transit • Do not guarantee that there will be specific major ISP’s present • Do not provide IP addresses or AS (Autonomous System) numbers 1503 0925_04F9_c1 © 1999, Cisco Systems, Inc.

Copyright © 1998, Cisco Systems, Inc. All rights reserved. Printed in USA. scr 70 35 Routed POP Architecture Internet Core POP Core Routers Gateway/Border Router Core Interconnect Distribution Routers Remote POP Access Routers Private Customer Network ISP Customer 1503 0925_04F9_c1 71 © 1999, Cisco Systems, Inc. Switched POP Architecture Internet Core POP Core Routers Gateway/Border Router Core Interconnect Distribution Routers Remote POP Access Routers ISP Customer 1503 0925_04F9_c1 © 1999, Cisco Systems, Inc.

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