16 2因特网 23因特网交换点( Internet eXchange Point,ⅨP) POP #3 Tier 1 Networks Tier 2 Networks IXP Tier 2 ISP PoP #2 PoP #1 除 Tier 3 Network Tier 3 Network (multi-homed ISP) (single homed ISP) Internet users (business, consumers, etc 河南中医药大学/阮晓龙/13938213680/http://network.xg.hactcm.edu.cn/http://network.ke.51xueweb.cn
河南中医药大学 / 阮晓龙 / 13938213680 / http://network.xg.hactcm.edu.cn / http://network.ke.51xueweb.cn 2.因特网 16 2.3因特网交换点（Internet eXchange Point，IXP）
17 2因特网 23因特网交换点( Internet eXchange Point,ⅨP) ahttp://en.wikipediaorg/wiki/internetexchangepoint a An Internet exchange point (Xor IXP)is a physical infrastructure through which Internet service providers(ISPs exchange Internet traffic between their networks (autonomous systems) a IXPs reduce the portion of an ISPs traffic which must be delivered via their upstream transit providers, thereby reducing the average per-bit delivery cost of their service. Furthermore, the increased number of paths learned through the lXP improves routing efficiency and fault-tolerance 河南中医药大学/阮晓龙/13938213680/http://network.xg.hactcm.edu.cn/http://network.ke.51xueweb.cn
河南中医药大学 / 阮晓龙 / 13938213680 / http://network.xg.hactcm.edu.cn / http://network.ke.51xueweb.cn 2.因特网 http://en.wikipedia.org/wiki/Internet_exchange_point An Internet exchange point (IX or IXP) is a physical infrastructure through which Internet service providers (ISPs) exchange Internet traffic between their networks (autonomous systems). IXPs reduce the portion of an ISP's traffic which must be delivered via their upstream transit providers, thereby reducing the average per-bit delivery cost of their service. Furthermore, the increased number of paths learned through the IXP improves routing efficiency and fault-tolerance. 17 2.3因特网交换点（Internet eXchange Point，IXP）
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gent 20 2因特 Products B Services Ne Point, IXP Connectivity Matters CONNECTED TO OVER 5, 510 AUTONOMOUS SYSTEMS: Experience being part of the most interconnected network in the world Why Choose Cogent lutions for Applicaton Hear from our customers Enterprises s rIC Content Good network beot tech aupport rovinari 河南中医药大学/阮晓龙
河南中医药大学 / 阮晓龙 / 13938213680 / http://network.xg.hactcm.edu.cn / http://network.ke.51xueweb.cn 2.因特网 20 2.3因特网交换点（Internet eXchange Point，IXP）