Router(\u8def\u7531\u5668)
\u8ca0\u8cacOSI\u7b2c3\u5c64
\u53ef\u9023\u4e0d\u540cnetid,\u76f8\u540c\u7db2\u8def\u5c64protocol ex:\u5169\u908a\u90fd\u7528ip,\u6216\u5169\u908a\u90fd\u7528ipx
\u591a\u5ee3\u64ad\u9818\u57df,\u591a\u78b0\u649e\u9818\u57df
\u4ee5\u7db2\u8def\u4f4d\u5740\u4f86\u505a\u50b3\u9001\u7684\u6c7a\u5b9a
\u8ca0\u8cac\u50b3\u8f38\u5354\u5b9a\u672c\u8eab\u7684\u6e9d\u901a
\u53ea\u9700\u8b80\u61c2\u7f85\u8f2f\u4f4d\u5740,\u4e0d\u9700\u77e5\u5230\u786c\u9ad4\u4f4d\u5740
internet\u548cintranet\u4e92\u9023\u7528
\u53ef\u907f\u514d\u5ee3\u64ad\u98a8\u7206<\/p>\n\n\n\n
\u5176\u4ed6router\u6709:<\/strong> router\u4e3b\u8981\u529f\u80fd<\/strong> router\u7d44\u6210\u57fa\u672c\u67b6\u69cb <\/strong> …………………………………………..<\/p>\n\n\n\n routing table(\u8def\u7531\u8868) auto-summary<\/strong> \u8def\u5f91\u53ef\u5206 \u9810\u8a2d\u8def\u5f91 ………………………………..<\/p>\n\n\n\n \u5c01\u5305\u5728\u9032\u884c\u8def\u7531\u6642\u9700\u8ffd\u8e64\u7684\u4f4d\u5740\ufe55 …………………………………………………………..<\/p>\n\n\n\n Gateway Router(\u8def\u7531\u5668)\u8ca0\u8cacOSI\u7b2c3\u5c64\u53ef\u9023\u4e0d\u540cnetid,\u76f8 …<\/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-762","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\/762","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=762"}],"version-history":[{"count":0,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/762\/revisions"}],"wp:attachment":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/media?parent=762"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/categories?post=762"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/tags?post=762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
multiprotocol routers(\u591a\u91cd\u5354\u5b9a\u8def\u7531\u5668)
\u53ef\u9023\u5169\u7a2e\u4ee5\u4e0a\u7db2\u8def\u5c64\u5354\u5b9a ex\uff1a\u53ef\u4e00\u908a\u7528ip\u53e6\u4e00\u908a\u7528ipx
brouter(\u6a4b\u63a5\u8def\u7531\u5668)
\u53ef\u540c\u6642\u57f7\u884c\u8def\u7531\u5668\u53ca\u6a4b\u63a5\u5668\u529f\u80fd
routing switch(\u8def\u7531\u4ea4\u63db\u5668)
\u7528\u7db2\u8def\u5c64\u76ee\u5730\u4f4d\u5740\u627e\u51fa\u5c01\u5305\u61c9\u8f49\u9001\u7684\u8f38\u51fa\u93c8\u7d50,\u8655\u7406\u901f\u5ea6\u8f03\u5feb<\/p>\n\n\n\n
1.\u900f\u904e\u8def\u7531\u5354\u5b9a\u8207\u5176\u4ed6router\u4ea4\u63db\u7db2\u8def\u8cc7\u8a0a,\u7dad\u8b77\u8def\u7531\u8868\u4e26\u78ba\u8a8d\u5176\u4ed6router\u662f\u5426\u77e5\u9053\u7db2\u8def\u62d3\u6a38\u6539\u8b8a
2.\u7576\u5c01\u5305\u62b5\u9054\u4ecb\u9762\u6642,router\u9808\u7528routing table\u6c7a\u5b9a\u5c07\u5c01\u5305\u9001\u5f80\u9069\u7576\u7684\u4ecb\u9762\u4e0a,\u4e26\u52a0\u4e0a\u8a72\u4ecb\u9762\u6240\u9700\u7684\u8a0a\u6846\u8cc7\u8a0a,\u7136\u5f8c\u50b3\u9001\u8a0a\u6846
\u63db\u53e5\u8a71\u8aaa,\u5c31\u662f\u56db\u4ef6\u4e8b:\u5c01\u5305\u4ea4\u63db,\u5c01\u5305\u904e\u6ffe,\u4e92\u9023\u7db2\u901a\u8a0a,\u8def\u5f91\u9078\u64c7<\/p>\n\n\n\n
routing processor(\u7e5e\u9001\u8655\u7406\u5668):\u8edf\u9ad4,\u8def\u7531\u7ba1\u7406
high-seed switching fabric(\u4ea4\u63db\u7d50\u69cb):\u786c\u9ad4,\u8f49\u9001\u8cc7\u6599<\/p>\n\n\n\n
\u7528\u4f86\u8a18\u9304\u8def\u5f91,\u8cc7\u8a0a\u5305\u62ec:
protocol type(\u5354\u5b9a\u7a2e\u985e):\u8a18\u9304\u8def\u7531\u5354\u5b9a
destination\/next-hop associations(\u76ee\u7684\u5730\/\u4e0b\u4e00\u500b\u8e8d\u7d50\u5408):\u544a\u8a22\u8def\u7531\u5668\u76ee\u7684\u5730\u662f\u76f4\u63a5\u5230\u9054\u6216\u9700\u5728\u7d93\u5176\u4ed6\u8def\u7531\u5668\u624d\u80fd\u5230\u9054
routing metric(\u8def\u7531\u6b0a\u503c):\u4e0d\u540c\u7684\u8def\u7531\u5354\u5b9a\u7528\u4e0d\u540c\u7684\u6b0a\u503c,\u7528\u4f86\u6c7a\u5b9a\u6700\u4f73\u8def\u5f91,\u901a\u5e38\u503c\u8d8a\u5c0f\u8d8a\u4f73
outbound interface(\u5916\u9001\u4ecb\u9762):\u8cc7\u6599\u8981\u9001\u5f80\u7684\u4ecb\u9762
ps:\u82e5\u8981\u7e2e\u5c0f\u8def\u7531\u8868\u53ef\u4f7f\u7528summary route
summary route\u7684\u512a\u7f3a\u9ede
\u7279\u9ede:\u6703\u4f7f\u7528\u6240\u6709\u5b50\u7db2\u8def\u4e2d\u6700\u4f4e\u7684routing metric
\u512a\u9ede:\u6240\u6709\u76ee\u5730\u53ef\u5230\u9054\u6642,\u53ef\u4f7froute table\u8b8a\u5c0f
\u7f3a\u9ede:\u524d\u5c01\u5305\u5230\u53bb\u7121\u6cd5\u627a\u9054\u7684\u76ee\u7684\u5730\u6642,\u6703\u5148\u88ab\u9001\u5230\u5177summary route\u7684router,\u56e0\u6b64\u53ef\u80fd\u7522\u751f\u6548\u7387\u8f03\u5dee\u7684route<\/p>\n\n\n\n
routing protocols\u53ef\u4ee5\u5c07\u539f\u672c\u624b\u52d5summary route\u7684\u5de5\u4f5c\u8b8a\u70ba\u81ea\u52d5
\u4f46classless routing protocol\u7121\u6cd5\u652f\u63f4discontiguous network(\u4e0d\u9023\u7e8c\u7db2\u8def)
\u800cclassful routing protocols\u7522\u751f\u7684route\u672c\u8eab\u5c31\u4ff1\u5099summary route\u7684\u7279\u8272 <\/p>\n\n\n\n
static route(\u975c\u614b\u8def\u5f91):<\/strong>
\u4e5f\u7a31\u70banon-Adaptive algorithm
\u4ee5\u624b\u52d5\u65b9\u5f0f\u8a2d\u5b9a,\u9069\u5408\u4e0d\u6613\u8b8a\u52d5\u7db2\u8def
\u512a\u9ede:\u4e0d\u6613\u9020\u6210cpu\u8ca0\u64d4,\u4e0d\u4f7f\u7528\u984d\u5916\u7684\u983b\u5bec,\u589e\u52a0\u5b89\u5168\u6027
\u7f3a\u9ede:\u9700\u78ba\u5be6\u719f\u6089\u6574\u500b\u7db2\u8def,\u65b0\u589e\u7db2\u8def\u9032\u4f86\u8981\u624b\u52d5\u52a0\u5165\u65b0\u8def\u5f91,\u5728\u5927\u578b\u7db2\u8def\u4e0d\u592a\u53ef\u884c
dynamic route(\u52d5\u614b\u8def\u5f91):<\/strong>
\u4e5f\u7a31\u70baAdaptive algorithm
\u900f\u904e\u8def\u7531\u5354\u5b9a\u81ea\u52d5\u8a2d\u5b9a,\u8b8a\u52d5\u7684\u8def\u5f91\u6703\u5728\u8def\u7531\u5668\u9593\u4ea4\u63db<\/p>\n\n\n\n
\u4e5f\u7a31gateway of last resort(\u6c7a\u5b9a\u6700\u5f8c\u6c42\u52a9\u7684\u901a\u8a0a\u9598),\u56e0\u82e5\u627e\u4e0d\u5230\u8def\u5f91\u5247\u9001\u5230\u9810\u8a2d\u8def\u5f91
\u4e5f\u7a31quad-zero route(4\u96f6\u8def\u7531),\u56e0\u5e38\u4ee50.0.0.0\u4ee3\u8868\u9810\u8a2d\u8def\u5f91
\u7528\u9014:\u82e5\u8def\u7531\u8868\u7121\u7b26\u5408\u76ee\u7684\u7db2\u8def,\u6703\u4f7f\u7528\u9810\u8a2d\u8def\u5f91
\u4e3b\u8981\u7279\u8272:
1\u8b93\u8def\u7531\u8868\u76e1\u53ef\u80fd\u7dad\u6301\u5728\u6700\u5c0f
2\u53ef\u8b93\u8def\u7531\u5668\u5c07\u5c01\u5305\u50b3\u9001\u5230\u4efb\u4f55\u7db2\u8def\u4e3b\u6a5f\u4e0a,\u800c\u4e0d\u9700\u7d00\u9304\u6240\u6709\u7db2\u8def\u7684\u8def\u5f91\u8cc7\u8a0a
\u53ef\u624b\u52d5\u8a2d\u5b9a\u6216\u8def\u7531\u5354\u5b9a\u52d5\u614b\u53d6\u5f97
\u901a\u5e38\u6307\u5230isp\u7684\u7db2\u8def
LSR(loose source route)
\u4e0d\u6307\u5b9aip\u8def\u7531\u7684\u65b9\u5f0f,ip\u5f9e\u4f86\u6e90\u5230\u76ee\u5730\u4e4b\u9593\u7684\u8def\u5f91\u53ef\u4efb\u610f\u9078\u64c7
SSR(strict source route)
\u6307\u5b9aip\u8def\u7531\u7684\u65b9\u5f0f,ip\u5f9e\u4f86\u6e90\u5230\u76ee\u5730\u4e4b\u9593\u7684\u8def\u5f91\u5df1\u7d93\u88ab\u6307\u5b9a<\/p>\n\n\n\n
\u7f85\u8f2f\u4f4d\u5740(\u4f86\u6e90\u8ddf\u76ee\u7684),ex:ip address
\u786c\u9ad4\u4f4d\u5740(\u4f86\u6e90\u548c\u76ee\u7684)\u6bcf\u6b21\u8df3\u7ad9\u6703\u4e0d\u540c,ex:mac address
ps:hop\u662f\u5c01\u5305\u5f9e\u4e00\u500brouter\u50b3\u5230\u53e6\u4e00\u500brouter\u7684\u904e\u7a0b,\u4e5f\u53ef\u7a31\u8df3\u7ad9
hosta\u4e1f\u5c01\u5305\u7d66hostb\u6642\u8def\u7531\u5668\u7684\u52d5\u4f5c:
hosta\u6aa2\u67e5hostb\u7684ip\u76ee\u7684\u5730\u4f4d\u5740,\u6703\u6709a,b,c\u4e09\u7a2e\u7d50\u679c
a,ip\u82e5\u672a\u6a19\u660e\u5247\u4e1f\u68c4
b,hostb\u7684ip\u5728\u76ee\u524d\u7db2\u8def\u5167:
hosta\u627e\u51fahostb\u786c\u9ad4\u4f4d\u5740,\u52a0\u9032\u8a0a\u6846\u76ee\u5730\u6b04\u4f4d\u5f8c,\u4e26\u9001\u51fa\u7d66hostb
c,hostb\u7684ip\u5728\u5176\u4ed6\u7db2\u8def:hosta\u53d6\u5f97\u9810\u8a2d\u9598\u9053\u786c\u9ad4\u4f4d\u5740,\u52a0\u9032\u8a0a\u6846\u76ee\u5730\u6b04\u4f4d\u5f8c\u9001\u51fa
1\u8def\u7531\u5668\u6536\u5230\u5f8c\u6aa2\u67e5\u5c01\u5305ip\u76ee\u7684\u5730\u4f4d\u5740,\u82e5\u5728\u4e0d\u540c\u7db2\u8def,\u5230\u6b65\u9a5f2,\u82e5\u5728\u76f8\u540c\u7db2\u8def\u5230\u6b65\u9a5f3
2\u8def\u7531\u5668\u85c9\u7531\u8def\u7531\u8868,\u5c07\u5c01\u5305\u7d66\u53ef\u5230\u9054\u76ee\u7684\u7684\u8def\u7531\u5668,\u4e26\u4fee\u6539\u8a0a\u6846\u76ee\u5730\u6b04\u4f4d,\u56de\u6b65\u9a5f1
3\u7b26\u5408\u76f8\u540c\u7db2\u8def,\u627e\u51fahostb\u786c\u9ad4\u4f4d\u5740,\u4e26\u4fee\u6539\u8a0a\u6846\u76ee\u5730\u6b04\u4f4d,\u9001\u51fa\u7d66hostb
ps:\u8a0a\u6846\u76ee\u7684\u6b04\u4f4d\u662f\u7528\u4f86\u8a18\u9304\u76ee\u6a19\u786c\u9ad4\u4f4d\u5740
ps:\u9810\u8a2d\u9598\u9053\u901a\u5e38\u7531\u8def\u7531\u5668\u64d4\u4efb
ps:\u627e\u51fa\u786c\u9ad4\u4f4d\u5740\u53ef\u4f7f\u7528ARP<\/p>\n\n\n\n
\u5c08\u9580\u662f\u8a2d\u8a08\u7d66\u5169\u500b\u5b8c\u5168\u4e0d\u540c\u7684\u7db2\u8def\u7d50\u69cb,\u53ef\u9023\u4e0d\u540c\u7db2\u8def\u5c64protocol\u53ca\u4e0d\u540cnetid
\u5de5\u4f5c\u56ca\u62ec\u4e86\u6574\u500bOSI\u4e03\u500b\u5c64\u7d1a,\u6578\u64da\u5f9ea\u7db2\u62b5\u9054b\u7db2\u6642gatewate\u4efb\u52d9\u5b8c\u6210
\u662f\u5354\u5b9a\u8f49\u63db\u5668protocol converter,\u9598\u9053\u4e86\u89e3\u9023\u63a5\u5728\u8def\u7531\u5668\u7684\u6bcf\u4e00\u689d\u7db2\u8def\u6240\u4f7f\u7528\u7684\u5354\u5b9a,\u56e0\u6b64\u80fd\u5920\u8f49\u8b6f\u5354\u5b9a
\u5f62\u614b\u5206\u70ba\u8a2d\u5099\u6216\u662frouter\u88e1\u7684lanport\u6216\u5b89\u88dd\u5728router\u7684\u8edf\u9ad4
\u8655\u7406\u4e0d\u540c\u5354\u5b9a\u9593\u7db2\u8def\u6578\u64da\u7684\u50b3\u8f38\u65b9\u6cd5:
Tunneling \u6700\u5e38\u7528,\u8655\u7406\u5668\u8017\u8cbb\u5c11
\u7528\u7b2c\u4e00\u500b\u7db2\u8def\u683c\u5f0f\u50b3\u9001\u5c01\u5305\ufe50\u4e26\u5305\u88f9\u6210\u96d9\u65b9\u6613\u7406\u89e3\u683c\u5f0f
\u5728\u53e6\u4e00\u500b\u7db2\u8def\u4f7f\u7528\u53e6\u4e00\u7a2e\u683c\u5f0f\u50b3\u9001
Terminal Emulation
\u901a\u8a0a\u6642,\u5728\u8f49\u63db\u904e\u7a0b\u4e2d\u5c07\u81ea\u5df1\u7576\u6210\u7d42\u7aef
PC Emulation Card(gateway card)\u8f03\u6602\u8cb4,\u6613\u5f15\u8d77\u885d\u7a81,\u8f03\u9700\u8981\u6642\u9593
Gateway Server \u6307\u5b9a\u4e00\u53f0PC\u70ba\u5de5\u4f5c\u7ad9\u8655\u7406\u6240\u6709\u6a21\u64ec
ps:
\u5e02\u9762\u4e0a\u7684gateway\u5927\u90fd\u63d0\u4f9b\u8ca0\u8f09\u5e73\u8861,VPN,Qos,firewall,mail\u904e\u6ffe,…\u7b49\u529f\u80fd<\/p>\n","protected":false},"excerpt":{"rendered":"