16 2因特网 23因特网交换点( Internet eXchange Point,IXP) Tier 1 Networks Tier 2 Networks IXP Tier 2 ISP POP #2 POP #1 菌 Transit 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713938213680/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）
2因特网 23因特网交换点( Internet eXchange Point,ⅨXP) ahttp:/en.wikipedia.org/wiki/nternetexchangepoint o An Internet exchange point (X or 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 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 河南中医药大学/阮晓龙713938213680/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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cogent partner portal I customer login I support I site map select language l 20 Search 2因特 Products 8 Services Netw News About Cogent Contact Bf in b oint, IXP Connectivity Matters Cogent Powered Buildings CONNECTED TO OVER 5, 510 AUTONOMOUS SYSTEMS: Experience being part of the most interconnected network in the world hy Choose Cogen servic Application Hear from our customers Solutions for Enterprises Content Good network. best tech support Prnvirlerc 河南中医药大学/阮晓龙 aue Deloof so their Ir-pectve ow
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）