{"id":476239,"date":"2023-08-09T07:26:52","date_gmt":"2023-08-09T07:26:52","guid":{"rendered":""},"modified":"2023-09-05T11:12:18","modified_gmt":"2023-09-05T11:12:18","slug":"class-b-ip-address","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/class-b-ip-address\/","title":{"rendered":"B\u7c7bIP\u5730\u5740"},"content":{"rendered":"<p>B \u7c7b IP \u5730\u5740\u662f\u7531\u4e92\u8054\u7f51\u534f\u8bae (IP) \u5b9a\u4e49\u7684\u4e00\u7c7b IP \u5730\u5740\uff0c\u5b83\u662f\u4e00\u7ec4\u89c4\u5b9a\u5982\u4f55\u901a\u8fc7\u4e92\u8054\u7f51\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u7684\u89c4\u5219\u3002<\/p>\n<h2>\u5386\u53f2\u4e0e\u8d77\u6e90<\/h2>\n<p>B \u7c7b IP \u5730\u5740\u7684\u6982\u5ff5\u6e90\u81ea\u6700\u521d\u7684 IP \u5730\u5740\u5206\u7c7b\u7cfb\u7edf\uff08\u79f0\u4e3a\u6709\u7c7b\u7f51\u7edc\uff09\u3002\u8be5\u7cfb\u7edf\u5728 20 \u4e16\u7eaa 80 \u5e74\u4ee3\u5de6\u53f3\u7684\u4e92\u8054\u7f51\u65e9\u671f\u5f15\u5165\uff0c\u968f\u7740 IPv4\uff08\u4e92\u8054\u7f51\u534f\u8bae\u7248\u672c 4\uff09\u7684\u53d1\u5c55\uff0c\u4f5c\u4e3a\u7ba1\u7406 IP \u5730\u5740\u5206\u914d\u548c\u5206\u914d\u7684\u624b\u6bb5\u3002<\/p>\n<h2>\u8be6\u7ec6\u8d44\u6599<\/h2>\n<p>B \u7c7b IP \u5730\u5740\u662f\u4e92\u8054\u7f51\u65e9\u671f\u4f7f\u7528\u7684\u4e94\u7c7b IP \u5730\u5740\uff08A\u3001B\u3001C\u3001D \u548c E \u7c7b\uff09\u4e4b\u4e00\u3002\u5728\u6709\u7c7b\u7f51\u7edc\u4e2d\uff0c\u6bcf\u4e2a\u7c7b\u522b\u90fd\u4f7f\u7528\u4e0d\u540c\u7684\u7f51\u7edc\u5730\u5740\u548c\u4e3b\u673a\u5bfb\u5740\u65b9\u6848\uff0cB \u7c7b IP \u5730\u5740\u5728\u5927\u5c0f\u548c\u89c4\u6a21\u4e0a\u4ecb\u4e8e A \u7c7b\u548c C \u7c7b\u4e4b\u95f4\u3002<\/p>\n<p>\u6bcf\u4e2a B \u7c7b\u7f51\u7edc\u5305\u542b\u4e00\u4e2a 16 \u4f4d\u7f51\u7edc\u524d\u7f00\uff0c\u540e\u9762\u8ddf\u7740\u4e00\u4e2a 16 \u4f4d\u4e3b\u673a\u53f7\u3002B \u7c7b IP \u5730\u5740\u8303\u56f4\u4e3a 128.0.0.0 \u81f3 191.255.255.255\u3002\u8fd9\u610f\u5473\u7740 B \u7c7b\u7f51\u7edc\u6700\u591a\u53ef\u4ee5\u6709 65,534 \u4e2a\u4e3b\u673a\uff082^16 \u51cf\u53bb\u7f51\u7edc\u5730\u5740\u548c\u5e7f\u64ad\u5730\u5740\u7684 2\uff09\u3002<\/p>\n<h2>\u5185\u90e8\u7ed3\u6784\u53ca\u529f\u80fd<\/h2>\n<p>B \u7c7b IP \u5730\u5740\u5177\u6709\u4e24\u4e2a\u516b\u4f4d\u5b57\u8282\u7684\u7f51\u7edc\u90e8\u5206\u548c\u4e24\u4e2a\u516b\u4f4d\u5b57\u8282\u7684\u4e3b\u673a\u90e8\u5206\u3002\u7528\u4e8c\u8fdb\u5236\u672f\u8bed\u6765\u8bf4\uff0c\u524d\u4e24\u4e2a\u516b\u4f4d\u5b57\u8282\u662f\u7f51\u7edc\u5730\u5740\uff0c\u540e\u4e24\u4e2a\u516b\u4f4d\u5b57\u8282\u662f\u4e3b\u673a\u5730\u5740\u3002\u4f8b\u5982\uff0c\u5728IP\u5730\u5740150.150.1.1\u4e2d\uff0c\u201c150.150\u201d\u662f\u7f51\u7edc\u5730\u5740\uff0c\u201c1.1\u201d\u662f\u4e3b\u673a\u5730\u5740\u3002<\/p>\n<p>B \u7c7b\u5730\u5740\u4e2d\u7b2c\u4e00\u4e2a\u516b\u4f4d\u5b57\u8282\u7684\u524d\u4e24\u4f4d\u59cb\u7ec8\u4e3a 10\u3002\u8fd9\u4e3a\u7f51\u7edc\u5730\u5740\u7559\u4e0b\u4e86 14 \u4f4d\uff0c\u603b\u5171\u63d0\u4f9b\u4e86 16,384 (2^14) \u4e2a\u53ef\u80fd\u7684\u7f51\u7edc\u5730\u5740\u3002<\/p>\n<h2>\u4e3b\u8981\u7279\u5f81<\/h2>\n<p>B \u7c7b IP \u5730\u5740\u7684\u4e00\u4e9b\u4e3b\u8981\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\n<p>\u5927\u91cf\u4e3b\u673a\u5730\u5740\uff1aB \u7c7b\u7f51\u7edc\u53ef\u4ee5\u5bb9\u7eb3\u5927\u91cf\u4e3b\u673a\u5730\u5740\uff0c\u975e\u5e38\u9002\u5408\u4e2d\u578b\u5230\u5927\u578b\u7ec4\u7ec7\u3002<\/p>\n<\/li>\n<li>\n<p>B \u7c7b\u5730\u5740\u5168\u7403\u552f\u4e00\uff1a\u6bcf\u4e2a B \u7c7b IP \u5730\u5740\u5728\u6574\u4e2a\u4e92\u8054\u7f51\u4e0a\u90fd\u662f\u552f\u4e00\u7684\uff0c\u786e\u4fdd\u4e0d\u4f1a\u53d1\u751f\u51b2\u7a81\u6216\u91cd\u53e0\u3002<\/p>\n<\/li>\n<li>\n<p>\u4e8c\u8fdb\u5236\u6807\u8bc6\u7b26\uff1aB\u7c7b\u5730\u5740\u7684\u8d77\u59cb\u4f4d\u8bbe\u7f6e\u4e3a10\uff0c\u4ee5\u533a\u522b\u4e8e\u5176\u4ed6\u7c7b\u5730\u5740\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>B \u7c7b IP \u5730\u5740\u7684\u7c7b\u578b<\/h2>\n<p>B \u7c7b IP \u5730\u5740\u53ef\u4ee5\u6839\u636e\u5176\u5e94\u7528\u8fdb\u884c\u5206\u7c7b\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u516c\u5171 B \u7c7b IP \u5730\u5740\uff1a<\/strong> \u8fd9\u4e9b\u662f\u5168\u7403\u552f\u4e00\u7684\uff0c\u7531\u4e92\u8054\u7f51\u53f7\u7801\u5206\u914d\u673a\u6784 (IANA) \u548c\u533a\u57df\u4e92\u8054\u7f51\u6ce8\u518c\u7ba1\u7406\u673a\u6784 (RIR) \u5206\u914d\u3002\u5b83\u4eec\u7528\u4e8e\u4e92\u8054\u7f51\u4e0a\u7684\u901a\u4fe1\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u79c1\u6709 B \u7c7b IP \u5730\u5740\uff1a<\/strong> \u8fd9\u4e9b\u662f\u4e3a\u79c1\u6709\u7f51\u7edc\u4fdd\u7559\u7684\uff0c\u65e0\u6cd5\u5728\u4e92\u8054\u7f51\u4e0a\u8def\u7531\u3002\u79c1\u6709 B \u7c7b IP \u5730\u5740\u7684\u4fdd\u7559\u8303\u56f4\u662f\u4ece 172.16.0.0 \u5230 172.31.255.255\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u4f7f\u7528\u53ca\u76f8\u5173\u95ee\u9898<\/h2>\n<p>B \u7c7b IP \u5730\u5740\u901a\u5e38\u7531\u9700\u8981\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u63d0\u4f9b\u5927\u91cf IP \u5730\u5740\u7684\u5927\u4e2d\u578b\u7ec4\u7ec7\u4f7f\u7528\u3002\u7136\u800c\uff0c\u7531\u4e8eIP\u5730\u5740\u8017\u5c3d\u7684\u95ee\u9898\uff0c\u5305\u62ecB\u7c7b\u5730\u5740\u5728\u5185\u7684\u6709\u7c7b\u7f51\u7edc\u7cfb\u7edf\u5df2\u5728\u5f88\u5927\u7a0b\u5ea6\u4e0a\u88ab\u65e0\u7c7b\u57df\u95f4\u8def\u7531\uff08CIDR\uff09\u6240\u53d6\u4ee3\u3002 CIDR \u5141\u8bb8\u66f4\u6709\u6548\u5730\u5206\u914d IP \u5730\u5740\u3002<\/p>\n<h2>\u4e0e\u7c7b\u4f3c\u672f\u8bed\u7684\u6bd4\u8f83<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u7269\u54c1<\/th>\n<th>A\u7ea7<\/th>\n<th>B\u7ea7<\/th>\n<th>C\u7ea7<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7b2c\u4e00\u4e2a\u516b\u4f4d\u4f4d\u7ec4\u8303\u56f4<\/td>\n<td>1-126<\/td>\n<td>128-191<\/td>\n<td>192-223<\/td>\n<\/tr>\n<tr>\n<td>\u7f51\u7edc\u4f4d<\/td>\n<td>8<\/td>\n<td>16<\/td>\n<td>24<\/td>\n<\/tr>\n<tr>\n<td>\u4e3b\u673a\u4f4d<\/td>\n<td>24<\/td>\n<td>16<\/td>\n<td>8<\/td>\n<\/tr>\n<tr>\n<td>\u7f51\u7edc\u6570\u91cf<\/td>\n<td>126<\/td>\n<td>16,384<\/td>\n<td>2,097,152<\/td>\n<\/tr>\n<tr>\n<td>\u6bcf\u4e2a\u7f51\u7edc\u7684\u4e3b\u673a\u6570<\/td>\n<td>16,777,214<\/td>\n<td>65,534<\/td>\n<td>254<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u672a\u6765\u524d\u666f\u548c\u6280\u672f<\/h2>\n<p>IPv6\u7684\u63a8\u51fa\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u5730\u5740\u7a7a\u95f4\uff0c\u89e3\u51b3\u4e86IPv4\u5730\u5740\u8017\u5c3d\u7684\u95ee\u9898\u3002\u5c3d\u7ba1\u5982\u6b64\uff0c\u7531\u4e8e\u8fc7\u6e21\u5230 IPv6 \u7684\u6210\u672c\u548c\u590d\u6742\u6027\uff0c\u8bb8\u591a\u7ec4\u7ec7\u7ee7\u7eed\u4f7f\u7528 IPv4\uff0c\u5305\u62ec B \u7c7b\u5730\u5740\u3002<\/p>\n<h2>\u4e0e\u4ee3\u7406\u670d\u52a1\u5668\u5173\u8054<\/h2>\n<p>\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u4e0e B \u7c7b IP \u5730\u5740\u5173\u8054\u3002\u4ed6\u4eec\u53ef\u4ee5\u4f7f\u7528 B \u7c7b IP \u5730\u5740\u5728\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u4e4b\u95f4\u8f6c\u53d1\u8bf7\u6c42\u548c\u54cd\u5e94\u3002\u6b64\u5916\uff0c\u4f7f\u7528\u4e00\u7cfb\u5217 B \u7c7b IP \u5730\u5740\u53ef\u4ee5\u5e2e\u52a9\u4ee3\u7406\u670d\u52a1\u5668\u5206\u914d\u8d1f\u8f7d\u3001\u589e\u52a0\u5197\u4f59\u5e76\u63d0\u9ad8\u7528\u6237\u7684\u533f\u540d\u6027\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.iana.org\/\" target=\"_new\" rel=\"noopener nofollow\">\u4e92\u8054\u7f51\u53f7\u7801\u5206\u914d\u673a\u6784 (IANA)<\/a><\/li>\n<li><a href=\"https:\/\/www.nro.net\/\" target=\"_new\" rel=\"noopener nofollow\">\u5730\u533a\u4e92\u8054\u7f51\u6ce8\u518c\u7ba1\u7406\u673a\u6784 (RIR)<\/a><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/support\/docs\/ip\/routing-information-protocol-rip\/13788-3.html\" target=\"_new\" rel=\"noopener nofollow\">IP \u5bfb\u5740\u548c\u7f51\u7edc\u7b80\u4ecb<\/a><\/li>\n<li><a href=\"https:\/\/web.mit.edu\/rhel-doc\/4\/RH-DOCS\/rhel-sg-en-4\/ch-ipaddress.html\" target=\"_new\" rel=\"noopener nofollow\">\u4e86\u89e3 IP \u5bfb\u5740<\/a><\/li>\n<\/ul>","protected":false},"featured_media":476240,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476239","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Understanding Class B IP Address<\/mark>","faq_items":[{"question":"What is a Class B IP address?","answer":"<p>A Class B IP address is a type of IP address defined by the Internet Protocol. It has a 16-bit network prefix and a 16-bit host number, with an IP address range from 128.0.0.0 to 191.255.255.255.<\/p>"},{"question":"Where did Class B IP addresses originate?","answer":"<p>Class B IP addresses originated from the classful networking system introduced in the early days of the internet around the 1980<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476239","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476239\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/476240"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=476239"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}