ip尋址ipaddress-文庫吧
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【正文】 An IP address that has binary 0s in all bit positions is reserved for default route 1地址 ，表示泛洪廣播 An IP address that has binary 0s in all bit positions is reserved for flood broadcast 169。 2020, Shenzhen Polytechnic. All rights reserved. . 12 私有地址 （ Private IP Address） 1. 私有地址可以節(jié)省 IP地址 Private IP addresses are another solution to the problem of the impending exhaustion of public IP addresses. 2. 私有地址不能在 Inter上被路由 Private IP addresses are not routed on the Inter backbone. 169。 2020, Shenzhen Polytechnic. All rights reserved. . 13 Exercise: IP Address Classes Address Class Network Host 169。 2020, Shenzhen Polytechnic. All rights reserved. . 14 IP Address Classes Exercise Answers Address Class Network Host A B C C B Nonexistent 169。 2020, Shenzhen Polytechnic. All rights reserved. . 15 網(wǎng)絡(luò)掩碼（ Network Mask） A類： B類： C類： 169。 2020, Shenzhen Polytechnic. All rights reserved. . 16 網(wǎng)絡(luò)掩碼的作用（ Function of Network Mask） 10101100 00010000 00000010 10100000 ? 11111111 11111111 00000000 00000000 10101100 00010000 00000000 00000000 Network ID 169。 2020, Shenzhen Polytechnic. All rights reserved. . 17 子網(wǎng)劃分（ Subting） 為了克服有限的 IP地址，所有類別網(wǎng)絡(luò)可以被劃分為更小的子網(wǎng)。 To efficiently manage a limited supply of IP addresses, all classes can be subdivided into smaller subworks. 169。 2020, Shenzhen Polytechnic. All rights reserved. . 18 劃分子網(wǎng)原因（ Reasons for Subting） 1. 提供靈活的編址 Provides addressing flexibility Provides 2. 提供廣播抑制 Broadcast Containment 3. 為 LAN提供低水平的安全 Lowlevel security on the LAN. 169。 2020, Shenzhen Polytechnic. All rights reserved. . 19 介紹子網(wǎng)劃分（ Introduction to Subting） 劃分子網(wǎng)要從主機位借位 Host bits must are reassigned (or “borrowed”) as work bits. 3 bits borrowed allows 232 or 6 subs 5 bits borrowed allows 252 or 30 subs 12 bits borrowed allows 2122 or 4094 subs 169。 2020, Shenzhen Polytechnic. All rights reserved. . 20 介紹子網(wǎng)劃分（ Introduction toSubting） 網(wǎng)絡(luò)號碼 主機號碼 網(wǎng)絡(luò)號碼 主機號碼 網(wǎng)絡(luò)號碼 主機號碼 子網(wǎng)號碼 不考慮子網(wǎng) 網(wǎng)絡(luò)掩碼 子網(wǎng)掩碼 擴充的網(wǎng)絡(luò)號碼 考慮子網(wǎng)化 169。 2020, Shenzhen Polytechnic. All rights res
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