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broadband strategies handbook.pdf - Khazar University

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Figure 5.6 Internet Exchange Point ModelsLayer 2 exchangeISP 6ISP 5ISP 4IXPservices:TLD DNS,routingregistrylookingglass,news,etcEthernet switchIXPmanagementnetworkISP 1ISP 2ISP 3Layer 3 exchange/wholesale transit ISPISP 6ISP 5ISP 4IXPservices:TLD DNS,routingregistrylookingglass,news, etcIXP routerIXPmanagementnetworkISP 1ISP 3ISP 2Source: Cisco, “Internet Exchange Point Design,” http://www.pacnog.net/pacnog6/IXP/IXP-design.<strong>pdf</strong>.Note: TLD DNS = Top-Level domain - domain name system.Technologies to Support Deployment of Broadband Infrastructure 215

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