The Border Gateway Protocol（BGP）is an interautonomous system（在此空作答）protocol.The primary function of a BGP speaking system is to exchange network（72）information with other BGP system.This network reachability information includes information on the list of Autonomous System（ASs）that reachability information traverses.BGP-4 provides a new set of mechanisms for supporting（73）interdomain routing.These mechanisms include support for advertising an IP（74）and eliminate the concept of network class within BGP.BGP-4 also introduces mechanisms that allow aggregation of routes,including（75）of AS paths.These changes provide support for the proposed supernetting scheme.

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The Border Gateway Protocol（BGP）is an interautonomous system（71）protocol.The primary function of a BGP speaking system is to exchange network（在此空作答）information with other BGP system.This network reachability information includes information on the list of Autonomous System（ASs）that reachability information traverses.BGP-4 provides a new set of mechanisms for supporting（73）interdomain routing.These mechanisms include support for advertising an IP（74）and eliminate the concept of network class with

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ch it is implemented. The state of a given route in the network is the cost, and OSPF algorithm allows every router to calculate the cost of the routes to any given reachable destination. Unless the administrator has made a configuration, the link cost of a path connected to a router is determined by the bit rate (1 Gbit/s, 10 Gbit/s, etc) of the interface. A router interface with OSPF will then advertise its link cost to neighbouring routers through multicast, known as the hello procedure. All

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Gateway是指（）

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g a gateway to the city. The American architect Cesar Pelli designed the skyscrapers.Constructed of high-strength concrete,the building______(5)around 1,800 square metres of office space on every floor. And it has a shopping centre and a concert hall at the base.Other______(6)of this impressive building include double-decker lifts,and glass and steel sunshades.The Millau BridgeThe Millau Bridge was opened in 2004 in the Tarn Valley,in southern France. At the ______(7)it was built,it was the wor

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