IPv4\u5730\u5740\u7f16\u5740<\/p>\n\n\n\n
ipv4\u7684\u5206\u7c7b<\/p>\n\n\n\n
1.1.1.0\/24—-\u7f51\u8def\u53f7
1.1.1.00000000\/25\uff0c\u4e3b\u673a\u4f4d8\u4f4d(2^8=256)->7\u4f4d\uff082^7=128\uff09
1.1.1.0\/25—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u7f51\u7edc\u53f7 \u4e3b\u673a\u4f4d=7,2\u76847\u6b21\u65b9=128
1.1.1.0\/26—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u7f51\u7edc\u53f7\uff0c\u4e3b\u673a\u4f4d=6,2\u76846\u6b21\u65b9=64
1.1.1.0\/27—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u7f51\u7edc\u53f7\uff0c\u4e3b\u673a\u4f4d5,2\u76845\u6b21\u65b9=32
1.1.1.0\/28—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u7f51\u7edc\u53f7\uff0c\u4e3b\u673a\u4f4d4,2\u76844\u6b21\u65b9=16
1.1.1.0\/29—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u7f51\u7edc\u53f7\uff0c\u4e3b\u673a\u4f4d\u662f3,2\u76843\u6b21\u65b9=8
1.1.1.0\/30—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u7f51\u7edc\u53f7\uff0c\u4e3b\u673a\u4f4d\u662f2,2\u76842\u6b21\u65b9=4
1.1.1.0\/31—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u7f51\u7edc\u53f7\uff0c\u4e3b\u673a\u4f4d\u662f1,2\u76841\u6b21\u65b9=2
1.1.1.0\/32—\u5b50\u7f51\u7684\u7f51\u7edc\u53f7\uff0c\u4e3b\u673a\u4f4d\u662f0,2\u76840\u6b21\u65b9=1
\u4e3b\u673a\u8def\u7531\uff1ahost
\u5b50\u7f51\u63a9\u7801\u4e0d\u65ad\u5730\u8fb9\u957f\uff0c\u7f51\u7edc\u4e2d\u4e3b\u673a\u4e0d\u65ad\u53d8\u5c11\uff0c\u7f51\u7edc\u4e0d\u65ad\u53d8\u5c0f
VLSM\uff08\u53ef\u53d8\u957f\u5b50\u7f51\u63a9\u7801\uff09
||
1
||
2\u8de8\u5ea6
\u8303\u56f4
1.1.1.0
1.1.1.1
||
1.1.1.1\/31
1.1.1.2\/31
||
4\u8de8\u5ea6\uff08\u53ef\u75282\uff09
\u53ef\u7528\u4e3b\u673a
1.1.1.1
1.1.1.2
||
1.1.1.3\/30—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u5e7f\u64ad\u5730\u5740
1.1.1.4\/30—\u7b2c\u4e8c\u4e2a\u5b50\u7f51\u7684\u7f51\u8def\u53f7
||
8\u8de8\u5ea6\uff08\u53ef\u7528\u662f6\uff09
\u53ef\u7528\u8303\u56f4
1.1.1.1—-\u7f51\u7edc\u53f7+1
1.1.1.6—\u5e7f\u64ad\u5730\u5740-1
||
1.1.1.7\/29—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u5e7f\u64ad\u5730\u5740
1.1.1.8\/29—\u7b2c\u4e8c\u4e2a\u5b50\u7f51\u7684\u7f51\u8def\u53f7
||
16\u8de8\u5ea6\uff08\u53ef\u752814\uff09
\u53ef\u7528\u8303\u56f4
1.1.1.1—-\u7f51\u7edc\u53f7+1
1.1.1.14—\u5e7f\u64ad\u5730\u5740-1
||
1.1.1.15\/28—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u5e7f\u64ad\u5730\u5740
1.1.1.16\/28
||
32\u8de8\u5ea6\uff08\u53ef\u752830\uff09
\u53ef\u7528\u8303\u56f4
1.1.1.1—-\u7f51\u7edc\u53f7+1
1.1.1.30—\u5e7f\u64ad\u5730\u5740-1
||
1.1.1.31\/27—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u5e7f\u64ad\u5730
1.1.1.31\/27—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u5e7f\u64ad\u5730\u5740
1.1.1.32\/27—\u7b2c\u4e8c\u4e2a\u5b50\u7f51\u7684\u7f51\u8def\u53f7
||
64\u8de8\u5ea6\uff0c\u53ef\u752862
\u53ef\u7528\u8303\u56f4
1.1.1.1 \u7f51\u7edc\u53f7+1
1.1.1.62 \u5e7f\u64ad\u5730\u5740-1
||
1.1.1.63\/26—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u5e7f\u64ad\u5730\u5740
1.1.1.64\/26—\u7b2c\u4e8c\u4e2a\u5b50\u7f51\u7684\u7f51\u8def\u53f7
||
64\u8de8\u5ea6
\u53ef\u7528\u8303\u56f4
1.1.1.65 \u7f51\u7edc\u53f7+1
1.1.1.126 \u5e7f\u64ad\u5730\u5740-1
||
1.1.1.127\/26—-\u7b2c\u4e8c\u4e2a\u5b50\u7f51\u7684\u5e7f\u64ad\u5730\u5740
||
128\uff08\u53ef\u7528126\u6570\u91cf\uff09\u8de8\u5ea6\uff1a\u7f51\u7edc\u4e2d\u5730\u5740\u603b\u6570\uff1a128
\u53ef\u7528\u8303\u56f4
1.1.1.1——\u7f51\u7edc\u53f7+1
1.1.1.126—-\u5e7f\u64ad\u5730\u5740-1
||
1.1.1.127\/25—\u7b2c\u4e00\u4e2a\u5b50\u7f51\u7684\u5e7f\u64ad\u5730\u5740
1.1.1.10000000\/25
1.1.1.128\/25—–\u7b2c\u4e8c\u4e2a\u5b50\u7f51\u7684\u7f51\u7edc\u53f7
||
128\uff08\u53ef\u7528126\u6570\u91cf\uff09\u8de8\u5ea6\uff1a\u7f51\u7edc\u4e2d\u5730\u5740\u603b\u6570\uff1a128
\u53ef\u7528\u8303\u56f4
1.1.1.129——\u7f51\u7edc\u53f7+1
1.1.1.254—-\u5e7f\u64ad\u5730\u5740-1
||
1.1.1.255\/25—–\u7b2c\u4e8c\u4e2a\u5b50\u7f51\u7684\u5e7f\u64ad\u5730\u5740
||
256\uff08\u53ef\u7528254\uff09\u8de8\u5ea6<\/p>\n\n\n\n
A————————————–B
1.1.1.23\/24 1.1.1.25\/25
1.1.1.0\/24 1.1.1.0\/25 \u540c\u4e00\u4e2a\u7f51\u7edc\u53f7\uff0c\u53ef\u4ee5\u8bbf\u95ee
A————————————–B
1.1.1.23\/24 1.1.1.225\/25
1.1.1.0\/24 1.1.1.128\/25 \u4e0d\u5728\u540c\u4e00\u4e2a\u7f51\u7edc\u53f7\uff0c\u4e0d\u53ef\u4ee5\u4e92\u76f8\u8bbf\u95ee
A\u53ef\u4ee5\u53d1\u5305\u8bbf\u95eeB B\u4e0d\u53ef\u4ee5\u53d1\u5305\u8bbf\u95eeA
<\/p>\n\n\n\n
<\/p>\n\n\n\n
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