{"id":1818,"date":"2023-02-09T08:44:53","date_gmt":"2023-02-09T00:44:53","guid":{"rendered":"https:\/\/blog.cauchyschwarz.com\/?p=1818"},"modified":"2023-02-09T08:45:01","modified_gmt":"2023-02-09T00:45:01","slug":"%e8%b7%af%e7%94%b1%e5%99%a8%e4%b8%a2%e5%8c%85%e7%ad%96%e7%95%a5red","status":"publish","type":"post","link":"https:\/\/blog.cauchyschwarz.com\/?p=1818","title":{"rendered":"\u8def\u7531\u5668\u4e22\u5305\u7b56\u7565RED"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u8def\u7531\u5668\u4e22\u5305\u7b56\u7565<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5c3e\u4e22\u5305(tail drop)\u7b56\u7565<\/strong>\uff1a\u5728\u961f\u5217\u6df1\u5ea6\u8fbe\u5230\u7f13\u5b58\u4e0a\u9650\u65f6\uff0c\u628a\u6240\u6709\u65b0\u5230\u7684\u5305\u4e22\u6389\u3002\u5c3e\u4e22\u5305\u7684\u95ee\u9898\u5728\u4e8e\u5728\u961f\u5217\u6ee1\u4e86\u624d\u5f00\u59cb\u4e22\u5305\uff0c\u8fd9\u4e2a\u65f6\u5019\u6240\u6709\u7684tcp\u6d41\u90fd\u4f1a\u540c\u65f6\u9000\u907f\uff0c\u7136\u540e\u6240\u6709\u7684tcp\u6d41\u53c8\u5f00\u59cb\u540c\u6b65\u589e\u52a0\u62e5\u585e\u7a97\u53e3\uff0c\u5f62\u6210TCP global synchronization\uff0c\u5bfc\u81f4\u94fe\u8def\u7684\u5229\u7528\u7387\u964d\u4f4e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>RED(random early detection\/drop\/discard)\u7b56\u7565<\/strong>\uff1a\u5728\u961f\u5217\u6df1\u5ea6\u8fbe\u5230minimum threshold\u65f6\uff0c\u5f00\u59cb\u968f\u673a\u4e22\u5305\uff0c\u5e76\u4e14\u4e22\u5305\u7684\u6982\u7387\u968f\u7740\u961f\u5217\u6df1\u5ea6\u7684\u589e\u52a0\u800c\u7ebf\u6027\u589e\u52a0(\u8fd9\u4e2a\u4e22\u5305\u7387\u7ebf\u6027\u589e\u52a0\u7684\u7ec8\u70b9\u5373MDP\/maximum drop probability\u4e0d\u4e00\u5b9a\u662f1\uff0c\u53ef\u80fd\u662f\u6bd41\u5c0f\u7684\u6982\u7387)\uff0c\u5f53\u961f\u5217\u6df1\u5ea6\u8fbe\u5230maximum threshold\u65f6\uff0c\u628a\u6240\u6709\u65b0\u5230\u7684\u5305\u4e22\u6389\u3002\u76f8\u6bd4\u4e8e\u5c3e\u4e22\u5305\u7b56\u7565\uff0cRED\u53ef\u4ee5\u907f\u514dtcp\u6d41\u7684\u540c\u6b65\u9000\u8ba9\u95ee\u9898\uff0c\u8ba9\u94fe\u8def\u5229\u7528\u7387\u63d0\u5347\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/networklessons.com\/cisco\/ccie-routing-switching-written\/wred-weighted-random-early-detection\">RED\u4ecb\u7ecd<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">RED\u7684\u53d8\u79cd\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>wRED(weighted random early detection)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">RED\u7684\u7f3a\u70b9\u662f\u6240\u6709\u5305\u4e00\u89c6\u540c\u4ec1\uff0c\u4e0d\u80fd\u63d0\u4f9b\u6709\u533a\u5206\u7684QOS\u3002wRED\u88ab\u7528\u4e8e\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\uff0c\u5bf9\u4e8e\u4e0d\u540c\u4f18\u5148\u7ea7\u7684\u5305\uff0cwRED\u7ed9\u51fa\u4e0d\u540c\u7684\u4e22\u5305\u6982\u7387\u3002wRED\u5de5\u4f5c\u65f6\uff0c\u867d\u7136\u6240\u6709\u7684\u5305\u5171\u4eab\u4e00\u4e2a\u961f\u5217\uff0c\u4f46\u662f\u5bf9\u4e8e\u4e0d\u540ctraffic class\u7684\u5305\uff0c\u5728\u961f\u5217\u957f\u5ea6\u8fbe\u5230minimum threshold\u65f6\uff0c\u4ed6\u4eec\u7684\u4e22\u5305\u6982\u7387\u8ba1\u7b97\u516c\u5f0f\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u4f18\u5148\u7ea7\u4f4e\u7684\u5305\u4e22\u5305\u6982\u7387\u5927\uff0c\u4ee5\u4fdd\u8bc1\u4f18\u5148\u7ea7\u9ad8\u7684\u5305\u53ef\u4ee5\u6b63\u5e38\u53d1\u9001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ARED(Active random early detection)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ARED\u89c2\u6d4b\u961f\u5217\u957f\u5ea6\u7684\u53d8\u5316\u8d8b\u52bf\uff0c\u5982\u679c\u961f\u5217\u957f\u5ea6\u603b\u662f\u5728minimum threshold\u9644\u8fd1\u53d8\u5316\uff0c\u8bf4\u660e\u4e22\u5305\u7b56\u7565\u592a\u8fc7\u6fc0\u8fdb\uff0c\u9700\u8981\u51cf\u5c0f\u4e22\u5305\u6982\u7387\uff0c\u5982\u679c\u961f\u5217\u957f\u5ea6\u603b\u662f\u5728maximum threshold\u9644\u8fd1\u53d8\u5316\uff0c\u8bf4\u660e\u4e22\u5305\u7b56\u7565\u592a\u8fc7\u4fdd\u5b88\uff0c\u9700\u8981\u589e\u52a0\u4e22\u5305\u6982\u7387\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>RRED(Robust Random early detection)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u4e8e\u62b5\u5fa1Low Rate Denial of Service\u653b\u51fb\uff0c\u6ca1\u770b\u61c2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8def\u7531\u5668\u4e22\u5305\u7b56\u7565 \u5c3e\u4e22\u5305(tail drop)\u7b56\u7565\uff1a\u5728\u961f\u5217\u6df1\u5ea6\u8fbe\u5230\u7f13\u5b58\u4e0a\u9650\u65f6\uff0c\u628a\u6240\u6709\u65b0\u5230\u7684\u5305\u4e22\u6389\u3002\u5c3e\u4e22\u5305\u7684\u95ee\u9898\u5728\u4e8e\u5728\u961f\u5217\u6ee1\u4e86\u624d\u5f00\u59cb\u4e22\u5305\uff0c\u8fd9\u4e2a\u65f6\u5019\u6240\u6709\u7684tcp\u6d41\u90fd\u4f1a\u540c\u65f6\u9000\u907f\uff0c\u7136\u540e\u6240\u6709\u7684tcp\u6d41\u53c8\u5f00\u59cb\u540c\u6b65\u589e&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[183,28],"class_list":["post-1818","post","type-post","status-publish","format-standard","hentry","category-10","tag-red","tag-28"],"_links":{"self":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/1818","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1818"}],"version-history":[{"count":1,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/1818\/revisions"}],"predecessor-version":[{"id":1819,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=\/wp\/v2\/posts\/1818\/revisions\/1819"}],"wp:attachment":[{"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1818"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.cauchyschwarz.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}