QoS(Quality of Service)\u662f\u4e00\u7a2e\u63a7\u5236\u6a5f\u5236
\u91dd\u5c0d\u4e0d\u540c\u7528\u6236\u6216\u4e0d\u540c\u6578\u64da\u6d41\u6216\u61c9\u7528\u7a0b\u5e8f\u7684\u8981\u6c42,\u7528\u76f8\u61c9\u4e0d\u540c\u7684\u512a\u5148\u9806\u5e8f,\u4fdd\u8b49\u6578\u64da\u6d41\u6027\u80fd\u9054\u5230\u4e00\u5b9a\u7684\u6c34\u6e96
QoS\u7684\u9700\u6c42\u5728\u9023\u7dda\u6642\u4fbf\u6c7a\u5b9a,\u4e14\u4e00\u76f4\u4f7f\u7528\u5230\u9023\u7dda\u7d50\u675f\u70ba\u6b62
QoS\u5c0d\u5bb9\u91cf\u6709\u9650\u7684\u7db2\u8def\u5341\u5206\u91cd\u8981,\u7279\u5225\u662f\u4e32\u6d41\u591a\u5a92\u9ad4\u61c9\u7528,ex:voice over IP,IP\u96fb\u8996,…\u7b49
ps:\u82e5\u662f\u6cbf\u9014\u8a2d\u5099\u7121\u6cd5\u6eff\u8db3QoS\u9700\u6c42\u6642,\u5c31\u5f88\u96e3\u767c\u63ee\u529f\u6548<\/p>\n\n\n\n
\u8cc7\u6599\u6d41\u9700\u6c42\u4e3b\u8981\u53c3\u6578<\/strong> \u6578\u64da\u50b3\u8f38\u6703\u9762\u5c0d\u5230\u7684\u554f\u984c<\/strong> ps: ###################################################################<\/p>\n\n\n\n \u5e38\u898b\u7684qos\u7b56\u7565<\/strong> ……… <\/p>\n\n\n\n flow-based(\u8cc7\u6599\u6d41\u57fa\u6e96)\u6f14\u7b97\u6cd5\/IIS(integrated service,\u6574\u5408\u5f0f\u670d\u52d9)<\/strong> RSVP(Resource Reservation Protocol,\u8cc7\u6e90\u9810\u7559\u5354\u5b9a)<\/strong> …….<\/p>\n\n\n\n \u4ee5class-based(\u7b49\u7d1a\u70ba\u57fa\u6e96\u670d\u52d9)\/differentiated services(\u5dee\u5225\u5f0f\u670d\u52d9)<\/strong> DSCP(Differentiated Services Code Point,\u5dee\u5225\u670d\u52d9\u7de8\u78bc\u9ede)<\/strong> <\/p>\n\n\n\n IEEE 802.1p\u7684CoS(Class of Service):<\/strong> <\/p>\n\n\n\n ########################################################## <\/p>\n\n\n\n \u904e\u5ea6\u4f9b\u7d66:<\/strong>\u63d0\u4f9b\u6975\u5927\u8def\u7531\u5668\u5bb9\u91cf,\u7de9\u885d\u5340\u7a7a\u9593,\u983b\u5bec..\u7b49,\u4f46\u4ee3\u50f9\u6602\u8cb4 leaky bucket algorithm(\u6f0f\u6c34\u6876\u6f14\u7b97\u6cd5)<\/strong>:1986 turner \u5c01\u5305\u6392\u7a0b:<\/strong> Queuing Congestion Manager(\u96cd\u585e\u7ba1\u7406)<\/strong> Congestion Aviodauce(\u96cd\u585e\u907f\u514d)<\/strong> Link Efficiency(\u5207\u5272,\u58d3\u7e2e)<\/strong> QoS(Quality of Service)\u662f\u4e00\u7a2e\u63a7\u5236\u6a5f\u5236 …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[30],"tags":[],"class_list":["post-766","post","type-post","status-publish","format-standard","hentry","category-networkconcept"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/766","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/comments?post=766"}],"version-history":[{"count":0,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/766\/revisions"}],"wp:attachment":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/media?parent=766"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/categories?post=766"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/tags?post=766"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\u53ef\u9760\u6027\uff1a\u50b3\u9001\u7684\u6240\u6709\u4f4d\u5143\u9700\u6b63\u5e38
\u5ef6\u9072\uff1a\u7b49\u5f85\u6642\u9593
\u6642\u57fa\u8aa4\u5dee\uff1a\u4e0d\u898f\u5f8b\u60c5\u6cc1\u7522\u751f
\u983b\u5bec\uff1a<\/p>\n\n\n\n
latency(\u5ef6\u9072)<\/strong>:\u6578\u64da\u50b3\u8f38\u6642\u76ee\u5730\u6240\u9700\u7b49\u5f85\u7684\u6642\u9593
jitter(\u6296\u52d5)<\/strong>:\u4e0d\u540c\u7684latency,
\u3000\u82e5\u5f71\u97f3\u4e0d\u80fd\u4ee5\u56fa\u5b9a\u901f\u7387\u50b3\u8f38,\u5247\u6703\u611f\u89ba\u6703\u65b7\u65b7\u7e8c\u7e8c
loss(\u4e1f\u5931)<\/strong>:\u5728\u5fd9\u788c\u53ca\u932f\u8aa4\u8f03\u9ad8\u7684\u7db2\u8def\u6703\u5c07\u6578\u64da\u4e1f\u6389
\u3000\u5f71\u97f3\u6578\u64da\u53ef\u63a5\u53d7\u5c11\u90e8\u4efdloss
\u3000\u4f7f\u7528TCP\u53ef\u6e1b\u7de9\u6b64\u554f\u984c,\u4f46\u6703\u589e\u52a0latency<\/p>\n\n\n\n
qos\u7684\u786c\u9ad4\u70bapacketsharper(\u983b\u5bec\u7ba1\u7406\u5668),\u529f\u80fd\u5982\u4e0b\uff1a
Classify of Traffic(\u5206\u985e)
Analyze Traffic(\u5206\u6790)
Control Traffic(\u63a7\u5236)
Report(\u5831\u544a) <\/p>\n\n\n\nQoS\u7b56\u7565<\/strong><\/h2>\n\n\n\n
Best-effort delivery<\/strong>
\u7528\u6700\u5feb\u7684\u65b9\u5f0f\u50b3\u8f38\u6240\u6709\u6578\u64da,\u4f46\u4e0d\u8003\u616e\u6578\u64da\u985e\u5225\u8207\u512a\u5148\u6b0a
Integrated services model<\/strong>
\u5c07\u6578\u64da\u6703\u7528\u5230\u8def\u5f91\u4e4b\u983b\u5bec\u4fdd\u7559,\u4f7f\u6578\u64da\u53ef\u5feb\u901f\u901a\u904e
ex:rfc1633\u7684RSVP
Differentiated services model<\/strong>
\u7db2\u8def\u4e0a\u7684\u5404\u7bc0\u9ede\u6703\u4f9d\u64da\u6578\u64da\u7684tag\u5224\u65b7\u662f\u5426\u8981\u63d0\u9ad8\u512a\u5148\u6b0a
ex:dscp,ieee802.1p<\/p>\n\n\n\n
\u7528\u5728unicast(\u55ae\u9ede\u50b3\u9001)\u53camulticast(\u591a\u9ede\u50b3\u9001)
\u4e3b\u8981\u5354\u5b9a\uff1aRSVP(Resource Reservation Protocol,\u8cc7\u6e90\u9810\u7559\u5354\u5b9a)
\u5141\u8a31\u591a\u500b\u50b3\u9001\u7aef\u50b3\u8f38\u5230\u591a\u500b\u63a5\u6536\u7fa4\u7d44,\u5404\u5225\u7528\u6236\u53ef\u5207\u63db\u983b\u9053,\u4e26\u5c07\u983b\u5bec\u5229\u7528\u6700\u4f73\u5316
\u505a\u6cd5\uff1a<\/strong>
1\u5148\u63a1\u7528\u64f4\u5c55\u6a39\u4e4b\u591a\u9ede\u50b3\u9001\u8def\u7531\u6cd5
2\u63a5\u6536\u7aef\u85c9\u8457\u64f4\u5c55\u6a39\u9001\u51fa(\u7528\u9006\u5411\u8def\u5f91\u8f49\u9001\u6cd5)\u9810\u7559\u8a0a\u606f\u5230\u50b3\u9001\u7aef
3\u82e5\u6210\u529f\u5247\u6cbf\u8457\u64f4\u5c55\u6a39\u7372\u5f97\u9810\u7559\u983b\u5bec,\u82e5\u7121\u983b\u5bec\u53ef\u7528\u5247\u5931\u6557
\u7f3a\u9ede\uff1a<\/strong>
\u3000\u8cc7\u6599\u6d41\u904e\u591a\u96e3\u4ee5\u8abf\u6574,\u7981\u4e0d\u8d77\u8def\u7531\u5668\u56fa\u969c,\u9700\u5c0d\u8def\u7531\u5668\u7a0b\u5f0f\u78bc\u5927\u91cf\u4fee\u6539<\/p>\n\n\n\n
\u3000\u7b2c\u4e09\u5c64\u7684\u901a\u8a0a\u5354\u5b9a,\u7528\u4f86\u8a2d\u5b9arouter\u4fdd\u8b49\u67d0\u4e00\u500bservice(\u670d\u52d9)\u53ef\u53d6\u5f97\u56fa\u5b9a\u50b3\u8f38\u901f\u7387QOS\u7684protocol(\u901a\u8a0a\u5354\u5b9a)
\u3000\u4e00\u7a2e\u9023\u7d50\u5c0e\u5411\u6280\u8853\uff0c\u8981\u6c42\u7db2\u8def\u7bc0\u9ede\u5132\u5b58\u7db2\u8def\u6240\u6709\u9023\u7dda\u7684\u72c0\u614b\u8cc7\u8a0a,\u64f4\u5145\u6027\u8f03\u5dee\uff0c\u4e0d\u6613\u96a8\u7db2\u8def\u9023\u7dda\u589e\u52a0\u800c\u64f4\u5927\u898f\u6a21
\u3000Receiver-oriented(\u8a0a\u606f\u63a5\u6536\u8005\u5c0e\u5411):\u983b\u5bec\u9810\u7559\u7684\u5de5\u4f5c\u7531\u63a5\u6536\u7aef\u50b3\u9023\u7dda\u6240\u9700\u7684\u670d\u52d9\u54c1\u8cea\u53c3\u6578\uff0c\u4fdd\u7559\u7db2\u8def\u4e0a\u7684\u8cc7\u6e90
\u3000Soft-state protocol(\u8edf\u6027\u72c0\u614b):\u7db2\u8def\u63d0\u5347\u6548\u80fd\u8a18\u9304\u7684\u72c0\u614b\u8cc7\u8a0a\uff0c\u589e\u52a0\u7db2\u8def\u904b\u4f5c\u7684\u6548\u80fd\u800c\u4e0d\u6703\u5f71\u97ff\u7db2\u8def\u7684\u6b63\u5e38\u904b\u4f5c\u8207\u5426(\u9700\u9031\u671f\u6027\u66f4\u65b0)
\u529f\u80fd<\/strong>
\u3000\u80fd\u8207\u5df2\u57f7\u884c\u7684\u8def\u7531\u5354\u5b9a\u914d\u5408\u4e26\u4e14\u652f\u63f4\u6578\u500b\u7db2\u8def\u5c64\u7684\u901a\u8a0a\u5354\u5b9a\uff0c\u7576\u7136\u5305\u542bTCP\/IP
\u3000\u652f\u63f4\u591a\u9ede\u50b3\u9001\u8207\u55ae\u9ede\u50b3\u9001
\u3000\u983b\u5bec\u4fdd\u7559\u7684\u8a0a\u606f\u50b3\u9001\u7d66\u9700\u8981\u7684\u7db2\u8def\u8a2d\u5099\uff0c\u5982\u8def\u7531\u5668\u6216\u662f\u4ea4\u63db\u5668\u7b49\u7b49\uff0c\u4ee5\u7dad\u8b77\u50b3\u9001\u7aef\u8207\u63a5\u6536\u7aef\u4e4b\u9593\u80fd\u4fdd\u6709\u6b32\u8a2d\u5b9a\u597d\u7684\u983b\u5bec\u503c
\u3000\u7dad\u8b77\u6bcf\u500b\u7bc0\u9ede\u7684\u983b\u5bec\u4fdd\u7559\u8cc7\u8a0a
\u3000\u5c0d\u904e\u4e0d\u652f\u63f4RSVP\u5354\u5b9a\u7684\u7db2\u8def\u8a2d\u5099\u5c31\u7121\u689d\u4ef6\u5730\u901a\u904e\u5b83<\/p>\n\n\n\n
\u5be6\u4f5c\u65b9\u5f0f\u6709dscp,ieee802.1p
\u7c21\u55ae,\u6613\u5be6\u505a\u5728\u8def\u7531\u5668\u4e0a,\u4e0d\u9700\u9810\u5148\u8a2d\u7acb\u548c\u8cc7\u6e90\u9810\u7559,\u4e0d\u7528\u70ba\u5404\u8cc7\u6599\u6d41\u9032\u884cend-to-end\u5354\u5546
\u53ef\u7531\u4e00\u7d44\u8def\u7531\u5668\u7d44\u6210\u7ba1\u7406\u9818\u57df,\u7ba1\u7406\u55ae\u4f4d\u5b9a\u7fa9\u4e00\u7d44\u670d\u52d9\u985e\u5225\u53ca\u5404\u5225\u8f49\u9001\u539f\u5247<\/p>\n\n\n\n
\u5c6c\u65bclayer3 qos
\u4ee5\u4e0d\u540c\u65b9\u5f0f\u89e3\u91cbip header\u7684tos\u6b04\u4f4d
\u7528\u516d\u500b\u4f4d\u5143\u4f86\u5b9a\u7fa9\u4e0d\u540c\u7b49\u7d1a\u7684\u5c01\u5305,\u5728\u4e00\u500b\u7bc0\u9ede\u4e2d\u6700\u591a\u53ef\u4ee5\u652f\u63f464\u500b\u4e0d\u540c\u7684\u7b49\u7d1a(2^6)
\u5c01\u5305PHB\u662f\u6839\u64daDSCP\u78bc<\/strong>
PHB(Per-Hop-Behavior,\u9010\u9ede\u50b3\u9001\u884c\u70ba),\u5728\u9001\u5c01\u5305\u6642\u63d0\u4f9b\u53ef\u91cf\u6e2c\u5f97\u5230\u7684\u8a0a\u52d9\u7279\u6027,ex:Bandwidth,Delay,Jitter,Packet Loss\u7b49
\u4f9d\u5176\u985e\u5225\u5c0d\u5176\u63a1\u53d6\u9069\u7576\u7684\u5c01\u5305\u6392\u7a0b\u884c\u70ba
\u3000expedited forwarding(\u8fc5\u901f\u8f49\u9001):\u63d0\u4f9b\u4e00\u822c(\u5927\u90e8\u4efd\u6d41\u91cf)\u53ca\u5feb\u901f\u5169\u7a2e\u670d\u52d9\u7b49\u7d1a
\u3000\u3000\u5c07\u8def\u7531\u5668\u8f38\u51fa\u7dda\u8def\u63d0\u4f9b\u5169\u500b\u8f38\u51fa\u4f47\u5217,\u4e00\u500b\u7528\u65bc\u5feb\u901f\u5c01\u5305,\u53e6\u500b\u7528\u65bc\u4e00\u822c\u5c01\u5305
\u3000\u3000\u985e\u4f3c\u6574\u5408\u5f0f\u670d\u52d9\u67b6\u69cb\u4e2d\u7684\u4fdd\u8a3c\u670d\u52d9,\u88ab\u7a31\u70bapremium service(\u7279\u7d1a\u670d\u52d9)\u6216\u662fvirtual lease line(\u865b\u64ec\u5c08\u7dda)
\u3000\u3000\u80fd\u63d0\u4f9blowdelay(\u4f4e\u50b3\u9001\u5ef6\u9072)\u3001low loss(\u4f4e\u5c01\u5c01\u5305\u907a\u5931\u7387)\u3001low jitter(\u4f4e\u5ef6\u9072\u8b8a\u52d5\u7387)\u53ca\u4fdd\u8b49\u983b\u5bec\u7684\u670d\u52d9
\u3000assured forwarding(\u4fdd\u8b49\u8f49\u9001)\uff1a\u63d0\u4f9b\u56db\u7a2e\u512a\u5148\u7b49\u7d1a,\u5728\u5206\u4e09\u7a2e\u4e1f\u68c4\u6a5f\u7387,\u5171\u752812\u500b\u7d44\u5408(DSCP,PHB)
\u3000\u3000\u5c01\u5305>\u5206\u985e\u5668>\u6a19\u8a18\u5668>\u8abf\u6574\/\u4e1f\u68c4\u904e\u6ffe\u5668>\u9001\u5165\u8def\u7531
\u3000BE(Best Effort,\u76e1\u529b\u8f49\u9001)
\u3000CS(Class Selector,\u985e\u9078\u64c7\u578b)
DSCP\u683c\u5f0f\u5982\u4e0b<\/strong>
Class Selector:3bit,\u53ef\u5b9a\u7fa98\u7a2e\u985e\u578b
\u30000:default,\u76e1\u529b\u8f49\u9001
\u30001-4:AF(Assured Forward,\u4fdd\u8b49\u8f49\u9001),\u6578\u5b57\u8d8a\u9ad8\u512a\u5148\u6b0a\u8d8a\u9ad8
\u30005:EF(Expedited Forwarding,\u52a0\u901f\u8f49\u9001),\u901a\u5e38\u7528\u5728\u50cf\u5f71\u97f3\u7b49\u5c0d\u6642\u9593\u8f03\u654f\u611f\u7684\u6578\u64da
\u30006:internetwork control,\u7528\u5728route\u5354\u5b9a\u6216\u662fstp\u7b49\u63a7\u5236\u7db2\u8def\u7684\u6578\u64da
\u30007:network control,\u540c\u985e\u52256
Drop Precedence:3bit,
\u3000\u5206\u70ba\u4f4e(1)\u4e2d(2)\u9ad8(3)\u4e1f\u68c4\u512a\u5148\u6b0a,\u5728\u76f8\u540c\u7684class selector\u4e2d\u9ad8\u4e1f\u68c4\u512a\u5148\u6b0a,\u88ab\u4e1f\u68c4\u7684\u53ef\u80fd\u6027\u8d8a\u9ad8<\/p>\n\n\n\n
\u5c6c\u65bclayer2 qos
\u5c07frame\u52a0\u4e0atag,\u8b93\u7279\u5b9a\u7684\u5c01\u5305\u53ef\u4ee5\u6709\u8f03\u70ba\u512a\u5148\u7684\u50b3\u8f38\u6b0a\u5229,\u9032\u800c\u9054\u5230\u512a\u5316\u7db2\u8def\u7684\u6548\u679c
\u512a\u5148\u6b0a\u70ba0-7,\u4ee53bit\u8868\u793a
802.1p\u53ef\u5be6\u4f5c\u5728
\u3000802.1q:\u5728vlan tag\u88e1\u7684pri\u6b04\u4f4d
\u3000cisco ISL:\u5728user filed\u5f8c\u9762\u76843bit
\u3000MPLS label\u88e1\u7684tos\u6b04\u4f4d
ps:
\u4f46\u6709\u4e9b\u5ee0\u5546\u53ea\u67092\u7d44CoS\u53ef\u7528\uff0c\u6709\u4e9b\u5247\u662f4\u7a2e\u53ef\u8a2d\uff0c\u5be6\u969b\u4e0a\u7684\u4f7f\u7528\u4ecd\u9700\u7d93\u5be6\u969b\u64cd\u4f5c\u624d\u80fd\u78ba\u8a8d <\/p>\n\n\n\n\u3000QoS\u76f8\u95dc\u6280\u8853<\/strong><\/h2>\n\n\n\n
\u7de9\u885d\u5132\u5b58:<\/strong>\u8cc7\u6599\u6d41\u9001\u51fa\u524d\u5148\u5132\u5b58\u5728\u63a5\u6536\u7aef\u7de9\u885d\u5340\u4e2d,\u53ef\u5c07\u57fa\u983b\u6642\u5dee\u64ab\u5e73
traffic shaping(\u6d41\u91cf\u8abf\u6574):<\/strong>\u85c9\u7531\u6d41\u91cf\u8abf\u6574\u53ef\u6e1b\u5c11\u96cd\u585e
\u8abf\u6574\u4f3a\u670d\u5668\u8cc7\u6599\u50b3\u8f38\u5e73\u5747\u901f\u7387
\u7528\u6236\u548c\u696d\u8005\u9054\u6210service level agreement(\u670d\u52d9\u7b49\u7d1a\u5354\u8b70)
\u898f\u7bc4\u6240\u63d0\u4f9b\u670d\u52d9\u7684\u6700\u4f4e\u53ef\u63a5\u53d7\u6027,\u542bAvailability(\u53ef\u7528\u6027),Security(\u5b89\u5168\u6027),Performance(\u6548\u80fd\u6027),\u5ba2\u6236\u670d\u52d9
\u76e3\u770b\u8cc7\u6599\u6d41\u91cf\u7a0b\u5e8f,\u6d41\u91cf\u76e3\u7763,traffic policing
\u8cc7\u6e90\u9810\u7559:<\/strong>
\u4f86\u6e90\u7aef\u548c\u76ee\u5730\u7aef\u9593\u5efa\u7acb\u865b\u64ec\u901a\u9053(\u8cc7\u6599\u6d41\u5c01\u5305\u9808\u63a1\u8a72\u8def\u5f91)
\u4e26\u6cbf\u8457\u8a72\u8def\u5f91\u9810\u7559\u8cc7\u6e90(\u983b\u5bec,\u7de9\u885d\u5340\u7a7a\u9593,cpu\u9031\u671f)
\u70ba\u9054\u826f\u597d\u54c1\u8cea,\u7279\u5b9a\u8cc7\u6599\u8981\u4fdd\u7559\u7de9\u885d\u5340\u7a7a\u9593,\u4ee5\u514d\u8a72\u8cc7\u6599\u6d41\u548c\u5176\u4ed6\u7af6\u722d
\u70ba\u78ba\u4fdd\u5373\u6642\u8655\u7406\u6bcf\u500b\u5c01\u5305,\u9808\u8b93\u8def\u7531\u5668cpu\u4e0d\u904e\u5ea6\u8ca0\u8377
\u5b58\u53d6\u63a7\u5236<\/strong>:
\u8cc7\u6599\u6d41\u898f\u683c\uff1a\u8b93\u50b3\u9001\u7aef,\u63a5\u6536\u7aef,\u8def\u7531\u5668\u7b49\u53c3\u8207\u8005\u7528\u53ef\u5354\u5546\u7684\u7279\u5b9a\u53c3\u6578\u63cf\u8ff0\u8cc7\u6599\u6d41
token bucket rate(\u8a18\u865f\u6876\u901f\u7387),byte\/sec \u53ef\u50b3\u9001\u6700\u5927\u901f\u7387
token bucket size(\u8a18\u865f\u6876\u5927\u5c0f)
peak data rate(\u5c16\u5cf0\u8cc7\u6599\u901f\u7387),\u50b3\u9001\u7aef\u4e0d\u53ef\u8d85\u904e\u901f\u7387
\u6700\u5c0f\u53ca\u6700\u5927\u5c01\u5305\u9577\u5ea6
\u96a8\u8457\u8a72\u898f\u683c\u5728\u8def\u5f91\u4e0a\u50b3\u64ad,\u6240\u7d93\u7bc0\u9ede\u5c07\u6839\u64da\u9700\u8981\u4fee\u6539\u53c3\u6578(\u6e1b\u5c11\u8cc7\u6599\u6d41)
\u6bd4\u4f8b\u5f0f\u8def\u7531:<\/strong>
\u7528\u672c\u5730\u64c1\u6709\u8cc7\u8a0a,\u5c07\u9001\u5f80\u6bcf\u500b\u76ee\u5730\u7aef\u7684\u6d41\u91cf\u5206\u6563\u5230\u4e0d\u540c\u8def\u5f91\u4e0a<\/p>\n\n\n\n
\u5c07\u4e0d\u898f\u5247\u7684\u6d41\u91cf\u8f49\u8b8a\u6210\u898f\u5f8b\u901f\u5ea6\u6d41\u91cf\u6ce8\u5165\u7db2\u8def,\u53ef\u6e1b\u5c11\u96cd\u585e
\u6f0f\u6c34\u6876\u542b\u6709\u9650\u9577\u5ea6\u4f47\u5217,\u7576\u5c01\u5305\u627a\u9054\u9032\u5165\u4f47\u5217,\u82e5\u5df1\u6eff\u5247\u4e1f\u68c4,\u6bcf\u4e00\u6642\u5e8f\u53ef\u9001\u4e00\u5c01\u5305
\u4e0d\u5141\u8a31\u9810\u5b58
token bucket algorithm(\u8a18\u865f\u6876\u6f14\u7b97\u6cd5)<\/strong>:
\u4ee5\u67d0\u901f\u7387\u7522\u751f\u8a18\u865f,\u88ab\u50b3\u9001\u5c01\u5305\u9700\u53d6\u5f97\u4e26\u92b7\u6bc0\u4e00\u500b\u8a18\u865f
\u5141\u8a31\u9810\u5b58,\u5b58\u91cf\u53ef\u9054\u8a18\u865f\u6876\u6700\u5927\u5bb9\u91cf
\u82e5\u6876\u5167\u88dd\u6eff\u53ca\u4e1f\u68c4\u8a18\u865f
\u53ef\u7de9\u5408\u8def\u7531\u5668\u4e4b\u9593\u6d41\u91cf <\/p>\n\n\n\n
fair queueing(\u516c\u5e73\u6392\u968a\u6f14\u7b97\u6cd5)<\/strong> 1987nagle
\u3000\u4ee5\u5faa\u74b0\u65b9\u5f0fround robin\u6aa2\u8996\u8def\u7531\u5668\u6bcf\u500b\u8f38\u51fa\u7dda\u8def\u7684\u5404\u5225\u4f47\u5217,\u53d6\u51fa\u4e0b\u500b\u4f47\u5217\u7b2c\u4e00\u500b\u5c01\u5305
\u3000\u56e0\u5927\u5c01\u5305\u4e3b\u6a5f\u6bd4\u7528\u5c0f\u5c01\u5305\u4e3b\u6a5f\u4f54\u66f4\u5927\u983b\u5bec,\u6240\u4ee5\u5c07\u5c01\u5305\u6539\u70ba\u4ee5\u4f4d\u5143\u7d44\u70ba\u55ae\u4f4d 1990demers
\u3000\u4e3b\u6a5f\u512a\u5148\u6027\u5b8c\u5168\u76f8\u540c
weighted fair queueing(\u6b0a\u91cd\u516c\u5e73\u6392\u968a)\u6f14\u7b97\u6cd5<\/strong>
\u3000\u6bcf\u500b\u6642\u5e8f\u53ef\u50b3\u5169\u500b\u6216\u66f4\u591a\u4f4d\u5143\u7d44
\u3000\u4e3b\u6a5f\u512a\u5148\u6027\u4e0d\u540c<\/p>\n\n\n\n
\u7576Queue\u6eff\u4e86\u5c31\u6703\u57f7\u884cTial-Drop(\u5c3e\u7aef\u4e1f\u68c4)\u7684\u52d5\u4f5c
\u96cd\u585e\u767c\u751f\u6642,TCP\u6703\u4f7f\u7528Window Size\u6e1b\u534a\u7684\u6a5f\u5236\u4f86\u63a7\u5236\u96cd\u585e<\/p>\n\n\n\n
\u4f7f\u7528RED\u6216WRED\u7684\u6a5f\u5236
\u5728\u96cd\u585e\u767c\u751f\u524d\u5148\u628a\u4e0d\u91cd\u8981\u7684\u5c01\u5305\u4e1f\u68c4<\/p>\n\n\n\n
\u907f\u514d\u5927\u5c01\u5305\u50b3\u8f38\u904e\u4e45\u5c0e\u81f4Voice\u7684\u5c01\u5305\u88abDelay
\u5229\u7528IP\u5c01\u5305\u7684Identify\/Offset\/more Fragment\/Inter-Frame-Leaving\u6b04\u4f4d\u9054\u5230\u907f\u514d\u5927\u5c01\u5305Delay\u5230Voice\u7684\u5c01\u5305 <\/p>\n","protected":false},"excerpt":{"rendered":"