Các Tùy chọn khác cần xem xét Như với tất cả các kịch bản trong cuốn sách này, chúng tôi luôn luôn có thể làm cho một số thay đổi bất kỳ kịch bản nào để cải thiện nó hoặc để tùy chỉnh kịch bản để phù hợp với một nhu cầu đặc biệt. | a datagram. WitH tHis option set tHe points to wHicH tHe datagram is routed are ecHoed back to tHe sender. THis allows you to follow a datagram along a patH. It is very often used in troublesHooting IP networks. If you Have Windows 95 you Have tHis utility. Type in DOS prompt tracert IP address and watcH tHe ecHo points on your screen. IPv6 eliminated tHis field and tHose functions tHat were not used or were better implemented by otHer protocols. Previous Table of Contents Next Illustrated TCP IP by Matthew G. Naugle Wiley Computer Publishing John Wiley Sons Inc. ISBN 0471196568 Pub Date 11 01 98 Previous Table of Contents Next Chapter 37 The IP Address Scheme Every systems engineer wHo understands ip understands tHe ip address scHeme. It can be tHe most confusing aspect of IP However it must be learned. Do not confuse tHis addressing structure witH tHat of media EtHernet address. THe ideas and concepts tHat evolved tHe protocol of TCP IP were devised separate from any datalink protocols of EtHernet and Token Ring. Hosts were not attacHed to a local HigH-speed network like EtHernet or Token Ring . Hosts communicated witH eacH otHer tHrougH low-speed point-to-point serial lines telepHone lines . THerefore an addressing scHeme to identify TCP IP Hosts and wHere tHey were located was implemented. THe addressing scHeme used to identify tHese Hosts is called tHe 32-bit IP address. THis is also known as a protocol address. THere are two types of network addressing scHemes used witH IP Classless. THe full address range can be used witHout regard to bit reservation for classes. THis type of addressing scHeme is primarily not used in direct Host assignment. THe scHeme is directly applied to tHe routing tables of tHe Internet and ISPs. Classful. THe original RFC 791 segmentation of tHe 32-bit address into specific classes denoting networks and Hosts. THe fun part is tHat tHe range of addresses 32 bits for IPv4 available are used for botH classless and classful addressing. .
