{"id":165,"date":"2022-01-02T18:15:51","date_gmt":"2022-01-02T10:15:51","guid":{"rendered":"https:\/\/blog.godzeng.com\/?p=165"},"modified":"2022-01-02T18:15:52","modified_gmt":"2022-01-02T10:15:52","slug":"%e7%b6%b2%e7%ae%a1%e5%af%a6%e4%bd%9c-l3%e4%ba%a4%e6%8f%9b%e5%99%a8%e5%af%a6%e6%88%b0%e4%b8%80%e8%b7%af%e6%9a%a2%e9%80%9a%e5%88%b0%e7%b6%b2%e9%9a%9b%e7%b6%b2%e8%b7%af","status":"publish","type":"post","link":"https:\/\/blog.godzeng.com\/?p=165","title":{"rendered":"[\u7db2\u7ba1\u5be6\u4f5c] L3\u4ea4\u63db\u5668\u5be6\u6230\u4e00\u8def\u66a2\u901a\u5230\u7db2\u969b\u7db2\u8def"},"content":{"rendered":"\n<p>\u5728\u4f01\u696d\u7db2\u8def\u88e1\u7d42\u7aef\u96fb\u8166\u6578\u91cf\u975e\u5e38\u7684\u591a\uff0c\u5927\u591a\u6578\u6700\u5077\u61f6\u7684\u65b9\u5f0f\u90fd\u7528HUB\u4e32\u518d\u56de\u5230\u6a5f\u623f\uff0c\u6b63\u6240\u8b02\u4e00\u500b\u7db2\u6bb5\u6253\u5929\u4e0b,\u4e5f\u96e3\u625b\u4e0b\u6240\u6709\u6d41\u91cf\uff0c\u70ba\u4f55\u9019\u6a23\u8aaa\u5462\u6211\u5011\u77e5\u9053\u7db2\u8def\u662f\u5c01\u5305\u5ee3\u64ad\u7684\u65b9\u5f0f\u53bb\u50b3\u905e\uff0c\u7c21\u55ae\u4f86\u8aaa\u5c31\u662f\u6bcf\u500b\u9ede\u90fd\u6703\u6572\u6572\u9580\uff0c\u4f46\u662f\u5728\u5927\u898f\u6a21\u7684\u7db2\u8def\u4e0b\u9664\u4e86IP\u9650\u5236 \u4e00\u500b\u7db2\u6bb5\u6700\u591a\u7528254\u7d44IP\uff0c\u4e0d\u5916\u4e4e\u9084\u8981\u8003\u91cf\u5230\u4ea4\u63db\u5668\u7684\u627f\u8f09\u91cf\u5728\u5927\u91cf\u7684\u5c01\u5305\u50b3\u905e\u4e0b\u96e3\u514d\u5c01\u5305\u6703\u5ef6\u9072\uff0c\u53e6\u5916\u7684\u5c31\u662f\u9084\u5f97\u6015\u8aaa\u672b\u7aefHUB\u4e82\u4e32\u5c0e\u81f4\u5ee3\u64ad\u98a8\u66b4\u4e5f\u5c31\u662f\u6211\u5011\u5e38\u8aaa\u7684LOOP\uff0c\u5728\u9019\u500b\u60c5\u6cc1\u4e0b\u4f01\u696d\u5167\u90e8\u7684\u7db2\u8def\u6703\u88ab\u7671\u7613\u6389\uff0c\u9019\u6642\u6211\u5011\u8981\u597d\u597d\u91cd\u65b0\u898f\u5283\u9019\u6a23\u7684\u7db2\u8def\uff0c\u6240\u4ee5\u63a5\u4e0b\u4f86\u6703\u8b1b\u5230L3\u5c64\u4ea4\u63db\u5668\u642d\u914d\u8def\u7531\u5668\u6216\u9632\u706b\u7246\u7c21\u55ae\u5be6\u505a\u4e00\u4e0bVLAN\u7684\u898f\u5283\u9084\u6709\u8def\u7531\u7684\u8d70\u5411~<\/p>\n\n\n\n<p>\u4f55\u8b02L3\u5c64\u4ea4\u63db\u5668? \u7c21\u55ae\u4f86\u8aaa\u6211\u5011\u4e00\u822c\u7684HUB\u57fa\u672c\u4e0a\u7684\u529f\u80fd\u5c31\u5f88\u55ae\u7d14\u7684\u5c07\u5c01\u5305\u7e7c\u7e8c\u50b3\u905e\u7d66\u4e0b\u4e00\u500b\u57e0\u76f4\u5230\u88ab\u63a5\u53d7\u5230\u70ba\u6b62\uff0c\u5728L3\u5c64\u4ea4\u63db\u5668\u9664\u4e86\u5ee3\u64ad\u5c01\u5305\u4e4b\u5916\u9084\u53ef\u4ee5\u81ea\u884c\u5b9a\u7fa9(\u865b\u64ec\u5340\u57df\u7db2\u8defVLAN)\uff0cVLAN\u6700\u591a\u53ef\u4ee5\u5b9a\u7fa94096\u7d44\uff0c\u90a3\u4f55\u8b02VLAN\u5462? \u5176\u5be6\u60f3\u7c21\u55ae\u6613\u9ede\u5c31\u662f\u4f60\u53ef\u4ee5\u81ea\u884c\u5b9a\u7fa9\u8981\u8b93\u54ea\u500b\u57e0\u8d70\u4f60\u8981\u7684\u7db2\u6bb5\u90a3\u500b\u7db2\u6bb5\u6703\u8ddf\u76f8\u540c\u7684VLAN ID\u5728\u4e00\u8d77\u5ee3\u64ad\uff0c\u90a3\u53ef\u4ee5\u540c\u6642\u53bb\u4e0d\u540c\u7db2\u6bb5\u55ce?\u7576\u7136\u53ef\u4ee5!\u4e0d\u904e\u9019\u90e8\u5206\u5c31\u8981\u53e6\u5916\u8b1b\u8def\u7531\u5c0e\u5411\u548cACL\u5b58\u53d6\u63a7\u5236\u4e86\u4e0d\u904e\u9019\u90e8\u5206\u9019\u6b21\u7684\u4e3b\u984c\u4e26\u4e0d\u6703\u8b1b\u5230ACL\u6709\u6a5f\u6703\u518d\u8aaa\u660e\uff0c\u5728L3\u5c64\u4ea4\u63db\u5668\u4e2d\u9084\u6709\u4e00\u500b\u91cd\u8981\u7684\u529f\u80fd\u5c31\u662f\u8def\u7531\u5c0e\u5411\u4e86\uff0c\u5176\u4e2d\u7684\u610f\u7fa9\u5c31\u662f\u7576\u5c01\u5305\u7684\u56ae\u5c0e\u53ef\u4ee5\u6307\u5b9a\u5c07\u7279\u5b9a\u7684IP\u6216IP\u6bb5\u53bb\u6307\u5b9a\u7684\u7db2\u95dc\u9598\u9053 \u5f85\u6703\u7684\u5be6\u4f5c\u6703\u8b1b\u5230\u9019\u90e8\u5206~<\/p>\n\n\n\n<p><strong>\u6e96\u5099\u5de5\u5177<\/strong>:<\/p>\n\n\n\n<ul><li>L3\u5c64\u4ea4\u63db\u5668 (\u6211\u81ea\u5df1\u662f\u6e96\u5099Cisco 3560 POE-8P)<\/li><li>Console RJ45 TO USB \u7684\u901a\u8a0a\u7dda<\/li><li>\u4e00\u53f0\u9632\u706b\u7246\u6216\u662f\u8def\u7531\u5668(\u5efa\u8b70\u9632\u706b\u7246)<\/li><li>\u4e00\u53f0\u7b46\u96fb\u6216\u662fPC<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1478\" height=\"1108\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/S__7856130.jpg\" alt=\"\" class=\"wp-image-166\"\/><figcaption>\u5927\u6982\u9019\u4e9b\u6771\u897f<\/figcaption><\/figure>\n\n\n\n<p><strong>\u7db2\u8def\u67b6\u69cb\u5716:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1062\" height=\"283\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641114527339.jpg\" alt=\"\" class=\"wp-image-169\"\/><\/figure>\n\n\n\n<p><strong>\u5be6\u4f5c\u6e2c\u8a66:<\/strong><\/p>\n\n\n\n<p>\u9996\u5148\u57fa\u672c\u7dda\u8def\u63a5\u597d\u5f8c\u5148\u5c07\u901a\u8a0a\u7dda\u63a5\u5728CISCO\u4e0a\u9762\u7684Console Port\u4e0a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1478\" height=\"1108\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/S__7856132.jpg\" alt=\"\" class=\"wp-image-170\"\/><figcaption>\u5c07RJ45\u7aef\u63a5\u5165Console Port\u4e0a<\/figcaption><\/figure>\n\n\n\n<p>\u5c07\u901a\u8a0a\u7dda\u63a5\u4e0a\u7b46\u96fb<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1908\" height=\"1265\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641077159783.jpg\" alt=\"\" class=\"wp-image-172\"\/><figcaption>\u9019\u6642\u5019\u88dd\u7f6e\u7ba1\u7406\u54e1\u6703\u770b\u5230\u4e00\u500b\u901a\u8a0a\u8a2d\u5099\u63a5\u5165 \u8981\u8a18\u4f4fCOM\u7684\u6578\u5b57\u7b49\u7b49\u6703\u7528\u5230<\/figcaption><\/figure>\n\n\n\n<p>\u4f7f\u7528Putty\u8edf\u9ad4\u4f86\u9032\u884c\u5e8f\u5217\u57e0\u901a\u8a0a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"679\" height=\"677\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/messageImage_1641077188992-1.jpg\" alt=\"\" class=\"wp-image-173\"\/><figcaption>\u9078\u64c7Serial \u4e26\u8f38\u5165\u525b\u525b\u770b\u5230\u7684COM\u7de8\u865f \u80de\u7387\u8981\u8a2d\u5b9a\u6210\u8a2d\u5099\u53ef\u4ee5\u7528\u7684\u901f\u7387<\/figcaption><\/figure>\n\n\n\n<p>\u958b\u59cb\u8a2d\u5b9aL3\u4ea4\u63db\u5668<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"992\" height=\"577\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/messageImage_1641077373906-1.jpg\" alt=\"\" class=\"wp-image-175\"\/><figcaption>\u6709\u51fa\u73fe\u6587\u5b57\u4ee3\u8868\u901a\u8a0a\u6b63\u5e38<\/figcaption><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>\u6709\u51fa\u73fe\u63d0\u793a\u5b57\u5143\u8f38\u5165\u5c31\u53ef\u4ee5\u958b\u59cb\u8f38\u5165\u4e86\n\u9032\u5230L3\u4ea4\u63db\u5668\u7684\u8a2d\u5b9a\u6a21\u5f0f\n\u5c07\u4ecb\u9762VLAN1 \u8a2d\u5b9a\u4e00\u500b\u56fa\u5b9aIP\n\u4ee5CISCO\u70ba\u4f8b:\ninterface vlan 1 172.16.1.253 255.255.255.0<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"992\" height=\"577\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/messageImage_1641077743594.jpg\" alt=\"\" class=\"wp-image-176\"\/><\/figure>\n\n\n\n<p>\u4f7f\u7528\u7db2\u8def\u901a\u8a0a\u4f86\u6539L3\u4ea4\u63db\u5668\u8a2d\u5b9a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1437\" height=\"1056\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641106756524.jpg\" alt=\"\" class=\"wp-image-177\"\/><figcaption>\u4f7f\u7528Putty \u6216\u662f WINDOWS Telnet Client \u4f86\u9032\u884c\u9023\u7dda<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1401\" height=\"1050\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641106835903.jpg\" alt=\"\" class=\"wp-image-178\"\/><figcaption>\u9023\u7dda\u6210\u529f \u6e2c\u8a66\u6307\u4ee4\u4e5f\u80fd\u6b63\u5e38\u986f\u793a<\/figcaption><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>\u6e2c\u8a66\u9632\u706b\u7246\u6709\u6c92\u6709\u901a\n\u4ee5CISCO\u70ba\u4f8b\nping 172.16.1.254<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1311\" height=\"1057\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641107514065.jpg\" alt=\"\" class=\"wp-image-179\"\/><figcaption>\u5f88\u597d\u5c01\u5305\u6709\u6b63\u5e38<\/figcaption><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>\u8a2d\u5b9a\u8def\u7531\u5c07\u6240\u6709\u5c01\u5305\u50b3\u905e\u7d66\u9632\u706b\u7246\n\u9032\u5165L3\u4ea4\u63db\u5668\u8a2d\u5b9a\u6a21\u5f0f\n\u4ee5CISCO \u70ba\u4f8b\nip route 0.0.0.0 0.0.0.0 172.16.1.254\n<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1401\" height=\"1080\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641109803391.jpg\" alt=\"\" class=\"wp-image-180\"\/><figcaption>\u9632\u706b\u7246\u70ba\u672c\u6b21\u5be6\u505a\u7528\u7684\u7db2\u95dc\u6240\u4ee5\u8981\u8a2d\u5b9a\u6210\u9632\u706b\u7246\u7684IP<\/figcaption><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5efa\u7acbVLAN \u4e26\u5c07VLAN \u6307\u6d3e\u4e00\u500b\u4ecb\u9762IP\n\u5efa\u7acbVLAN20\n\u9032\u5165L3\u4ea4\u63db\u5668\u8a2d\u5b9a\u6a21\u5f0f\n\u4ee5CISCO\u70ba\u4f8b:\ninterface vlan 20\nip address 192.168.20.253 255.255.255.0<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1383\" height=\"997\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641109901584.jpg\" alt=\"\" class=\"wp-image-181\"\/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>\u8a2d\u5b9aL3\u4ea4\u63db\u5668 \u5c07Port2\u4fee\u6539\u6210VLAN20 (\u9810\u8a2d\u5168\u90e8\u7684PORT\u90fd\u662fVLAN1)\n\u9032\u5165L3\u4ea4\u63db\u5668\u8a2d\u5b9a\u6a21\u5f0f\n\u4ee5CISCO\u70ba\u4f8b:\ninterface fa0\/2   \/\/\u6307\u5b9a\u5be6\u9ad4\u63a5\u53e32\nswitchport mode access  \/\/\u5c07\u5be6\u9ad4\u63a5\u53e3\u6a21\u5f0f\u6539\u70ba access\nswitchport  access vlan 20 \/\/\u5c07\u7aef\u53e3\u5c01\u5305\u53ea\u80fd\u901a\u904e  vlan 20<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"876\" height=\"773\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641110029150.jpg\" alt=\"\" class=\"wp-image-182\"\/><\/figure>\n\n\n\n<p><strong>\u9632\u706b\u7246:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1083\" height=\"523\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641111000013.jpg\" alt=\"\" class=\"wp-image-183\"\/><figcaption>\u5728\u9632\u706b\u7246\u88e1\u9762\u8981\u65b0\u5efa\u4e00\u689d\u975c\u614b\u8def\u7531\u5c01\u5305\u6307\u56de\u5230L3\u4ea4\u63db\u5668\u4e0a<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1141\" height=\"992\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641111049747.jpg\" alt=\"\" class=\"wp-image-184\"\/><figcaption>\u5728\u8a2d\u5b9a\u653e\u884c\u653f\u7b56<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1920\" height=\"1280\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/messageImage_1641082335724.jpg\" alt=\"\" class=\"wp-image-185\"\/><figcaption>\u53ef\u4ee5\u9023\u5230\u5916\u9762\u4e86<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1808\" height=\"1050\" src=\"https:\/\/blog.godzeng.com\/wp-content\/uploads\/2022\/01\/1641088805999.jpg\" alt=\"\" class=\"wp-image-186\"\/><figcaption>tracert route \u5f88\u660e\u986f\u5730\u770b\u5230 \u7b46\u96fb\u7684\u5c01\u5305\u4e1f\u7d66L3\u4ea4\u63db\u5668\u5f8c\u5728\u905e\u9001\u7d66\u9632\u706b\u7246<\/figcaption><\/figure>\n\n\n\n<p><strong>\u7d50\u5c3e:<\/strong><\/p>\n\n\n\n<p>\u7531\u9019\u6b21\u7684\u5be6\u505a\u53ef\u4ee5\u4e86\u89e3\u5230\u900f\u904eVLAN\u898f\u5283\u53ef\u4ee5\u91dd\u5c0d\u4e0d\u540c\u7db2\u6bb5\u9032\u884c\u8a2d\u5b9a\u4e5f\u80fd\u6e1b\u5c11\u9632\u706b\u7246\u7684\u8ca0\u64d4\uff0c\u8def\u5f91\u7684\u8655\u7406\u4ea4\u7d66L3\u4ea4\u63db\u5668\u5fd9 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