{"id":8325,"date":"2023-08-07T15:18:57","date_gmt":"2023-08-07T07:18:57","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=8325"},"modified":"2023-08-07T15:19:03","modified_gmt":"2023-08-07T07:19:03","slug":"ccdgzylhtd","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/8325.html","title":{"rendered":"csma\/cd\u7684\u5de5\u4f5c\u539f\u7406\u548c\u7279\u70b9"},"content":{"rendered":"\n

\u3000\u3000\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d\uff0c\u51b2\u7a81\u68c0\u6d4b\u6280\u672f\u662f\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u53ef\u9760\u6027\u7684\u91cd\u8981\u624b\u6bb5\u4e4b\u4e00\u3002\u800cCSMA\/CD(Carrier Sense Multiple Access with Collision Detection\uff0c\u8f7d\u6ce2\u76d1\u542c\u591a\u70b9\u63a5\u5165\u4e0e\u51b2\u7a81\u68c0\u6d4b)\u4f5c\u4e3a\u4ee5\u592a\u7f51\u4e2d\u6700\u5e38\u7528\u7684\u51b2\u7a81\u68c0\u6d4b\u6280\u672f\u4e4b\u4e00\uff0c\u5177\u6709\u5176\u72ec\u7279\u7684\u5de5\u4f5c\u539f\u7406\u548c\u7279\u70b9\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8CSMA\/CD\u7684\u5de5\u4f5c\u539f\u7406\u53ca\u5176\u7279\u70b9\uff0c\u5e76\u5206\u6790\u5176\u5728\u4ee5\u592a\u7f51\u4e2d\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001CSMA\/CD\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n\n\n\n

\u3000\u3000CSMA\/CD\u662f\u4e00\u79cd\u57fa\u4e8e\u5171\u4eab\u4ecb\u8d28\u7684\u591a\u70b9\u63a5\u5165\u6280\u672f\uff0c\u5b83\u7684\u5de5\u4f5c\u539f\u7406\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n

\u3000\u30001. \u8f7d\u6ce2\u76d1\u542c(Carrier Sense)\uff1a\u5f53\u4e00\u4e2a\u8282\u70b9\u60f3\u8981\u53d1\u9001\u6570\u636e\u65f6\uff0c\u9996\u5148\u4f1a\u76d1\u542c\u4fe1\u9053\u4e0a\u662f\u5426\u6709\u5176\u4ed6\u8282\u70b9\u6b63\u5728\u53d1\u9001\u6570\u636e\u3002\u5982\u679c\u4fe1\u9053\u4e0a\u6ca1\u6709\u68c0\u6d4b\u5230\u4fe1\u53f7\uff0c\u8bf4\u660e\u4fe1\u9053\u662f\u7a7a\u95f2\u7684\uff0c\u8282\u70b9\u53ef\u4ee5\u5f00\u59cb\u53d1\u9001\u6570\u636e\u3002<\/p>\n\n\n\n

\u3000\u30002. \u51b2\u7a81\u68c0\u6d4b(Collision Detection)\uff1a\u5728\u8282\u70b9\u53d1\u9001\u6570\u636e\u7684\u540c\u65f6\uff0c\u5b83\u8fd8\u4f1a\u4e0d\u65ad\u76d1\u542c\u4fe1\u9053\u4e0a\u7684\u4fe1\u53f7\uff0c\u4ee5\u4fbf\u53ca\u65f6\u53d1\u73b0\u51b2\u7a81\u3002\u5982\u679c\u8282\u70b9\u5728\u53d1\u9001\u6570\u636e\u7684\u8fc7\u7a0b\u4e2d\u68c0\u6d4b\u5230\u4fe1\u9053\u4e0a\u6709\u5176\u4ed6\u8282\u70b9\u540c\u65f6\u53d1\u9001\u6570\u636e\uff0c\u5c31\u4f1a\u7acb\u5373\u505c\u6b62\u53d1\u9001\uff0c\u5e76\u53d1\u9001\u4e00\u4e2a\u5e72\u6270\u4fe1\u53f7\u6765\u63d0\u9192\u5176\u4ed6\u8282\u70b9\u53d1\u751f\u4e86\u51b2\u7a81\u3002<\/p>\n\n\n\n

\u3000\u30003. \u9000\u907f\u7b97\u6cd5(Backoff Algorithm)\uff1a\u5f53\u8282\u70b9\u53d1\u73b0\u53d1\u751f\u4e86\u51b2\u7a81\u540e\uff0c\u5b83\u4f1a\u91c7\u7528\u9000\u907f\u7b97\u6cd5\u6765\u907f\u514d\u518d\u6b21\u53d1\u751f\u51b2\u7a81\u3002\u9000\u907f\u7b97\u6cd5\u4f1a\u968f\u673a\u9009\u62e9\u4e00\u4e2a\u9000\u907f\u65f6\u95f4\uff0c\u7136\u540e\u7b49\u5f85\u8fd9\u6bb5\u65f6\u95f4\u540e\u518d\u6b21\u5c1d\u8bd5\u53d1\u9001\u6570\u636e\u3002<\/p>\n\n\n\n

\u3000\u30004. \u91cd\u65b0\u53d1\u9001(Retry)\uff1a\u8282\u70b9\u5728\u9000\u907f\u65f6\u95f4\u7ed3\u675f\u540e\uff0c\u4f1a\u518d\u6b21\u5c1d\u8bd5\u53d1\u9001\u6570\u636e\u3002\u5982\u679c\u518d\u6b21\u53d1\u751f\u51b2\u7a81\uff0c\u8282\u70b9\u4f1a\u518d\u6b21\u6267\u884c\u9000\u907f\u7b97\u6cd5\uff0c\u5e76\u4e14\u6bcf\u6b21\u51b2\u7a81\u540e\u7684\u9000\u907f\u65f6\u95f4\u4f1a\u9010\u6e10\u589e\u52a0\uff0c\u4ee5\u51cf\u5c11\u51b2\u7a81\u7684\u6982\u7387\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e8c\u3001CSMA\/CD\u7684\u7279\u70b9<\/h2>\n\n\n\n

\u3000\u3000CSMA\/CD\u4f5c\u4e3a\u4ee5\u592a\u7f51\u4e2d\u7684\u51b2\u7a81\u68c0\u6d4b\u6280\u672f\uff0c\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n\n\n\n

\u3000\u30001. \u5206\u5e03\u5f0f\u63a7\u5236\uff1aCSMA\/CD\u91c7\u7528\u5206\u5e03\u5f0f\u63a7\u5236\u7684\u65b9\u5f0f\uff0c\u5373\u6bcf\u4e2a\u8282\u70b9\u90fd\u6709\u6743\u5229\u53d1\u9001\u6570\u636e\uff0c\u51b2\u7a81\u68c0\u6d4b\u548c\u9000\u907f\u7b97\u6cd5\u90fd\u5728\u8282\u70b9\u672c\u5730\u8fdb\u884c\u3002\u8fd9\u79cd\u5206\u5e03\u5f0f\u63a7\u5236\u7684\u65b9\u5f0f\u4f7f\u5f97\u7f51\u7edc\u66f4\u52a0\u7075\u6d3b\uff0c\u8282\u70b9\u4e4b\u95f4\u7684\u901a\u4fe1\u66f4\u52a0\u9ad8\u6548\u3002<\/p>\n\n\n\n

\u3000\u30002. \u51b2\u7a81\u68c0\u6d4b\u80fd\u529b\uff1aCSMA\/CD\u80fd\u591f\u53ca\u65f6\u68c0\u6d4b\u5230\u4fe1\u9053\u4e0a\u7684\u51b2\u7a81\uff0c\u5e76\u4e14\u80fd\u591f\u5feb\u901f\u505c\u6b62\u53d1\u9001\u6570\u636e\uff0c\u4ee5\u907f\u514d\u51b2\u7a81\u7684\u7ee7\u7eed\u53d1\u751f\u3002\u8fd9\u79cd\u51b2\u7a81\u68c0\u6d4b\u80fd\u529b\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u7f51\u7edc\u7684\u53ef\u9760\u6027\u548c\u4f20\u8f93\u6548\u7387\u3002<\/p>\n\n\n\n

\u3000\u30003. \u9000\u907f\u7b97\u6cd5\uff1aCSMA\/CD\u91c7\u7528\u9000\u907f\u7b97\u6cd5\u6765\u907f\u514d\u51b2\u7a81\u7684\u518d\u6b21\u53d1\u751f\u3002\u9000\u907f\u7b97\u6cd5\u7684\u968f\u673a\u6027\u548c\u9010\u6e10\u589e\u52a0\u7684\u9000\u907f\u65f6\u95f4\uff0c\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u51b2\u7a81\u7684\u6982\u7387\uff0c\u63d0\u9ad8\u7f51\u7edc\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n\n\n\n

\u3000\u30004. \u9002\u7528\u4e8e\u534a\u53cc\u5de5\u901a\u4fe1\uff1aCSMA\/CD\u9002\u7528\u4e8e\u534a\u53cc\u5de5\u901a\u4fe1\u65b9\u5f0f\uff0c\u5373\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u6709\u4e00\u4e2a\u8282\u70b9\u8fdb\u884c\u53d1\u9001\u6216\u63a5\u6536\u64cd\u4f5c\u3002\u8fd9\u79cd\u901a\u4fe1\u65b9\u5f0f\u53ef\u4ee5\u8282\u7701\u7f51\u7edc\u8d44\u6e90\uff0c\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e09\u3001CSMA\/CD\u5728\u4ee5\u592a\u7f51\u4e2d\u7684\u5e94\u7528<\/h2>\n\n\n\n

\u3000\u3000CSMA\/CD\u4f5c\u4e3a\u4ee5\u592a\u7f51\u4e2d\u6700\u5e38\u7528\u7684\u51b2\u7a81\u68c0\u6d4b\u6280\u672f\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5c40\u57df\u7f51\u548c\u5e7f\u57df\u7f51\u4e2d\u3002\u4ee5\u592a\u7f51\u662f\u4e00\u79cd\u57fa\u4e8eCSMA\/CD\u6280\u672f\u7684\u5c40\u57df\u7f51\u6807\u51c6\uff0c\u5b83\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n\n\n\n

\u3000\u30001. \u4f20\u8f93\u901f\u7387\uff1a\u4ee5\u592a\u7f51\u652f\u6301\u591a\u79cd\u4f20\u8f93\u901f\u7387\uff0c\u5305\u62ec10Mbps\u3001100Mbps\u548c1000Mbps\u7b49\u3002\u4e0d\u540c\u7684\u4ee5\u592a\u7f51\u6807\u51c6\u652f\u6301\u4e0d\u540c\u7684\u4f20\u8f93\u901f\u7387\uff0c\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u6807\u51c6\u3002<\/p>\n\n\n\n

\u3000\u30002. \u7075\u6d3b\u6027\uff1a\u4ee5\u592a\u7f51\u5177\u6709\u5f88\u9ad8\u7684\u7075\u6d3b\u6027\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u6269\u5c55\u7f51\u7edc\u89c4\u6a21\u3002\u53ef\u4ee5\u901a\u8fc7\u96c6\u7ebf\u5668\u3001\u4ea4\u6362\u673a\u7b49\u8bbe\u5907\u5c06\u591a\u4e2a\u4ee5\u592a\u7f51\u8fde\u63a5\u8d77\u6765\uff0c\u5f62\u6210\u66f4\u5927\u89c4\u6a21\u7684\u7f51\u7edc\u3002<\/p>\n\n\n\n

\u3000\u30003. \u6210\u672c\u4f4e\u5ec9\uff1a\u4ee5\u592a\u7f51\u7684\u786c\u4ef6\u8bbe\u5907\u4ef7\u683c\u76f8\u5bf9\u8f83\u4f4e\uff0c\u5bb9\u6613\u83b7\u53d6\u548c\u7ef4\u62a4\u3002\u8fd9\u4f7f\u5f97\u4ee5\u592a\u7f51\u6210\u4e3a\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u89c4\u6a21\u7f51\u7edc\u7684\u7406\u60f3\u9009\u62e9\u3002<\/p>\n\n\n\n

\u3000\u3000\u603b\u7ed3\uff1a<\/h2>\n\n\n\n

\u3000\u3000CSMA\/CD\u4f5c\u4e3a\u4ee5\u592a\u7f51\u4e2d\u7684\u51b2\u7a81\u68c0\u6d4b\u6280\u672f\uff0c\u901a\u8fc7\u8f7d\u6ce2\u76d1\u542c\u3001\u51b2\u7a81\u68c0\u6d4b\u3001\u9000\u907f\u7b97\u6cd5\u7b49\u6b65\u9aa4\u6765\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u3002\u5b83\u5177\u6709\u5206\u5e03\u5f0f\u63a7\u5236\u3001\u51b2\u7a81\u68c0\u6d4b\u80fd\u529b\u5f3a\u3001\u9000\u907f\u7b97\u6cd5\u7b49\u7279\u70b9\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5c40\u57df\u7f51\u548c\u5e7f\u57df\u7f51\u4e2d\u3002\u4ee5\u592a\u7f51\u4f5c\u4e3aCSMA\/CD\u7684\u5e94\u7528\u4e4b\u4e00\uff0c\u5177\u6709\u4f20\u8f93\u901f\u7387\u9ad8\u3001\u7075\u6d3b\u6027\u5f3a\u3001\u6210\u672c\u4f4e\u5ec9\u7b49\u7279\u70b9\uff0c\u4e3a\u5404\u79cd\u89c4\u6a21\u7684\u7f51\u7edc\u63d0\u4f9b\u4e86\u53ef\u9760\u7684\u901a\u4fe1\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d\uff0c\u51b2\u7a81\u68c0\u6d4b\u6280\u672f\u662f\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u53ef\u9760\u6027\u7684\u91cd\u8981\u624b\u6bb5\u4e4b\u4e00\u3002\u800cCSMA\/CD(Carrier Sense Multiple Access with Collision Detection\uff0c\u8f7d\u6ce2\u76d1\u542c\u591a\u70b9\u63a5\u5165\u4e0e\u51b2\u7a81\u68c0\u6d4b)\u4f5c\u4e3a\u4ee5\u592a\u7f51\u4e2d\u6700\u5e38\u7528\u7684\u51b2\u7a81\u68c0\u6d4b\u6280\u672f\u4e4b\u4e00\uff0c<\/p>\n","protected":false},"author":1,"featured_media":3671,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[159],"class_list":["post-8325","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-csmacd"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/8325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=8325"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/8325\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/3671"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=8325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=8325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=8325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}