{"id":55406,"date":"2025-08-13T21:54:45","date_gmt":"2025-08-13T13:54:45","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/55406.html"},"modified":"2025-08-13T21:54:45","modified_gmt":"2025-08-13T13:54:45","slug":"%e7%bd%91%e8%b7%af%e5%9f%ba%e7%a1%80-vlan","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/55406.html","title":{"rendered":"\u7f51\u8def\u57fa\u7840-VLAN"},"content":{"rendered":"<p>\u5df2\u66f4\u65b0\u7cfb\u5217\u6587\u7ae0\u5305\u62ec104\u300161850\u3001modbus \u3001\u50a8\u80fd\u7cfb\u7edf\u3001\u7f51\u7edc\u57fa\u7840\u77e5\u8bc6\u7b49&#xff0c;\u6b22\u8fce\u5173\u6ce8&#043;\u661f\u6807\u3002<\/p>\n<\/p>\n<p class=\"img-center\"><img decoding=\"async\" alt=\"\u56fe\u7247\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813135439-689c991f88f54.gif\" \/><\/p>\n<\/p>\n<p>VLAN&#xff08;Virtual Local Area Network&#xff0c;\u865a\u62df\u5c40\u57df\u7f51&#xff09;\u662f\u4e00\u79cd\u5c06\u7269\u7406\u5c40\u57df\u7f51&#xff08;LAN&#xff09;\u5212\u5206\u4e3a\u591a\u4e2a\u903b\u8f91\u5b50\u7f51\u7684\u6280\u672f&#xff0c;\u4f7f\u4e0d\u540cVLAN\u4e4b\u95f4\u7684\u8bbe\u5907\u901a\u4fe1\u9700\u8981\u7ecf\u8fc7\u8def\u7531\u5668\u6216\u4e09\u5c42\u4ea4\u6362\u673a&#xff0c;\u4ece\u800c\u589e\u5f3a\u7f51\u7edc\u5b89\u5168\u6027\u3001\u9694\u79bb\u5e7f\u64ad\u57df\u5e76\u4f18\u5316\u6d41\u91cf\u7ba1\u7406\u3002<\/p>\n<p>\u4e0b\u6587\u5c06\u4ecb\u7ecd\u5982\u4e0b\u8981\u70b9&#xff1a;<\/p>\n<p>1 VLAN \u4f5c\u7528<\/p>\n<p>2\u00a0VLAN\u7684\u7c7b\u578b<\/p>\n<p>3 VLAN\u7684\u901a\u4fe1\u65b9\u5f0f<\/p>\n<p>4 VLAN\u7684\u6807\u8bc6&#xff08;VLAN Tagging&#xff09;\u548c\u4ea4\u6362\u673a\u7aef\u53e3\u7c7b\u578b&#xff08;Access\u3001Trunk&#xff09;<\/p>\n<p>5 VLAN\u6570\u636e\u8f6c\u53d1\u5b9e\u4f8b<\/p>\n<\/p>\n<h3>1. VLAN\u7684\u6838\u5fc3\u6982\u5ff5<\/h3>\n<h4>1.1 VLAN\u7684\u4f5c\u7528<\/h4>\n<ul>\n<li>\n<p>\u5e7f\u64ad\u57df\u9694\u79bb&#xff1a;\u6bcf\u4e2aVLAN\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u5e7f\u64ad\u57df&#xff0c;\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u5e7f\u64ad\u6d41\u91cf&#xff08;\u5982ARP\u3001DHCP&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u5b89\u5168\u6027\u589e\u5f3a&#xff1a;\u4e0d\u540cVLAN\u95f4\u7684\u901a\u4fe1\u9700\u7ecf\u8fc7\u8def\u7531&#xff0c;\u53ef\u5b9e\u65bd\u8bbf\u95ee\u63a7\u5236&#xff08;ACL&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u7075\u6d3b\u7ec4\u7f51&#xff1a;\u4e0d\u53d7\u7269\u7406\u4f4d\u7f6e\u9650\u5236&#xff0c;\u903b\u8f91\u4e0a\u5212\u5206\u7f51\u7edc&#xff08;\u5982\u8d22\u52a1\u90e8\u3001\u7814\u53d1\u90e8\u53ef\u8de8\u4ea4\u6362\u673a\u5212\u5206VLAN&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u6d41\u91cf\u4f18\u5316&#xff1a;\u53ef\u9488\u5bf9\u4e0d\u540cVLAN\u8bbe\u7f6e\u4f18\u5148\u7ea7&#xff08;QoS&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>1.2 VLAN vs \u4f20\u7edfLAN<\/h4>\n<table>\n<tr>\u7279\u6027\u4f20\u7edfLANVLAN<\/tr>\n<tbody>\n<tr>\n<td>\u5e7f\u64ad\u57df<\/td>\n<td>\n<p>\u6240\u6709\u8bbe\u5907\u5728\u540c\u4e00\u5e7f\u64ad\u57df<\/p>\n<\/td>\n<td>\n<p>\u6bcf\u4e2aVLAN\u72ec\u7acb\u5e7f\u64ad\u57df<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\u5b89\u5168\u6027<\/td>\n<td>\n<p>\u8f83\u4f4e&#xff08;\u76f4\u63a5\u4e92\u901a&#xff09;<\/p>\n<\/td>\n<td>\n<p>\u8f83\u9ad8&#xff08;\u9700\u8def\u7531&#xff09;<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\u7075\u6d3b\u6027<\/td>\n<td>\n<p>\u4f9d\u8d56\u7269\u7406\u8fde\u63a5<\/p>\n<\/td>\n<td>\n<p>\u903b\u8f91\u5212\u5206&#xff0c;\u8de8\u8bbe\u5907\u751f\u6548<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\u7ba1\u7406\u6210\u672c<\/td>\n<td>\n<p>\u9ad8&#xff08;\u9700\u7269\u7406\u8c03\u6574&#xff09;<\/p>\n<\/td>\n<td>\n<p>\u4f4e&#xff08;\u914d\u7f6e\u66f4\u6539\u5373\u53ef&#xff09;<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3>2. VLAN\u7684\u7c7b\u578b<\/h3>\n<h4>2.1 \u57fa\u4e8e\u7aef\u53e3\u7684VLAN&#xff08;Port-based VLAN&#xff09;<\/h4>\n<ul>\n<li>\n<p>\u6700\u5e38\u89c1\u7684\u7c7b\u578b&#xff0c;\u4ea4\u6362\u673a\u7aef\u53e3\u88ab\u9759\u6001\u5206\u914d\u5230\u67d0\u4e2aVLAN\u3002<\/p>\n<\/li>\n<li>\n<p>\u793a\u4f8b&#xff1a;\u7aef\u53e31-10\u5c5e\u4e8eVLAN 10&#xff08;\u8d22\u52a1\u90e8&#xff09;&#xff0c;\u7aef\u53e311-20\u5c5e\u4e8eVLAN 20&#xff08;\u7814\u53d1\u90e8&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>2.2 \u57fa\u4e8eMAC\u5730\u5740\u7684VLAN&#xff08;MAC-based VLAN&#xff09;<\/h4>\n<ul>\n<li>\n<p>\u6839\u636e\u8bbe\u5907\u7684MAC\u5730\u5740\u52a8\u6001\u5206\u914dVLAN&#xff0c;\u9002\u7528\u4e8e\u79fb\u52a8\u8bbe\u5907&#xff08;\u5982\u7b14\u8bb0\u672c\u7535\u8111&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>2.3 \u57fa\u4e8e\u534f\u8bae\u7684VLAN&#xff08;Protocol-based VLAN&#xff09;<\/h4>\n<ul>\n<li>\n<p>\u6839\u636e\u7f51\u7edc\u5c42\u534f\u8bae&#xff08;\u5982IPv4\u3001IPv6\u3001IPX&#xff09;\u5212\u5206VLAN&#xff08;\u73b0\u5df2\u8f83\u5c11\u4f7f\u7528&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>2.4 \u57fa\u4e8e\u5b50\u7f51\u7684VLAN&#xff08;Subnet-based VLAN&#xff09;<\/h4>\n<ul>\n<li>\n<p>\u6839\u636eIP\u5730\u5740\u8303\u56f4\u5212\u5206VLAN&#xff08;\u9700\u4e09\u5c42\u4ea4\u6362\u673a\u652f\u6301&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>3. VLAN\u7684\u901a\u4fe1\u65b9\u5f0f<\/h3>\n<h4>3.1 \u540c\u4e00VLAN\u5185\u7684\u901a\u4fe1<\/h4>\n<ul>\n<li>\n<p>\u76f4\u63a5\u901a\u8fc7\u4e8c\u5c42\u4ea4\u6362\u673a&#xff08;MAC\u5730\u5740\u8868&#xff09;\u8f6c\u53d1&#xff0c;\u65e0\u9700\u8def\u7531\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>3.2 \u4e0d\u540cVLAN\u95f4\u7684\u901a\u4fe1<\/h4>\n<ul>\n<li>\n<p>\u5fc5\u987b\u7ecf\u8fc7\u8def\u7531\u5668\u6216\u4e09\u5c42\u4ea4\u6362\u673a&#xff08;\u901a\u8fc7\u865a\u62df\u63a5\u53e3SVI&#xff0c;\u5982\u00a0VLAN 10\u00a0\u5bf9\u5e94\u00a0192.168.1.1&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>4. VLAN\u7684\u6807\u8bc6&#xff08;VLAN Tagging&#xff09;<\/h3>\n<h4>4.1 802.1Q\u6807\u51c6<\/h4>\n<ul>\n<li>\n<p>\u5728\u4ee5\u592a\u7f51\u5e27\u7684\u6e90MAC\u548c\u7c7b\u578b\u5b57\u6bb5\u4e4b\u95f4\u63d2\u5165\u00a04\u5b57\u8282VLAN Tag&#xff1a;<\/p>\n<ul>\n<li>\n<p>TPID&#xff08;Tag Protocol ID&#xff09;&#xff1a;\u56fa\u5b9a\u00a00x8100&#xff0c;\u8868\u793a802.1Q\u5e27\u3002<\/p>\n<\/li>\n<li>\n<p>PCP&#xff08;Priority Code Point&#xff09;&#xff1a;3\u4f4d&#xff0c;\u7528\u4e8eQoS\u4f18\u5148\u7ea7&#xff08;0-7&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>DEI&#xff08;Drop Eligible Indicator&#xff09;&#xff1a;1\u4f4d&#xff0c;\u6807\u8bb0\u662f\u5426\u53ef\u4e22\u5f03&#xff08;\u7528\u4e8e\u62e5\u585e\u63a7\u5236&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>VID&#xff08;VLAN ID&#xff09;&#xff1a;12\u4f4d&#xff0c;\u6807\u8bc6VLAN&#xff08;\u8303\u56f41-4094&#xff0c;\u5176\u4e2d0\u548c4095\u4fdd\u7559&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/p>\n<p class=\"img-center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\u56fe\u7247\" height=\"280\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813135440-689c99202f259.png\" width=\"488\" \/><\/p>\n<\/p>\n<h4>4.2 \u4ea4\u6362\u673a\u7aef\u53e3\u7684VLAN\u6a21\u5f0f<\/h4>\n<table>\n<tr>\u7aef\u53e3\u7c7b\u578b\u4f5c\u7528\u662f\u5426\u6dfb\u52a0\/\u79fb\u9664VLAN Tag<\/tr>\n<tbody>\n<tr>\n<td>Access<\/td>\n<td>\n<p>\u8fde\u63a5\u7ec8\u7aef\u8bbe\u5907&#xff08;PC\u3001\u6253\u5370\u673a&#xff09;<\/p>\n<\/td>\n<td>\n<p>\u63a5\u6536\u65f6\u5265\u79bbTag&#xff0c;\u53d1\u9001\u65f6\u4e0d\u52a0Tag<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>Trunk<\/td>\n<td>\n<p>\u8fde\u63a5\u4ea4\u6362\u673a\/\u8def\u7531\u5668&#xff0c;\u5141\u8bb8\u591a\u4e2aVLAN\u901a\u8fc7<\/p>\n<\/td>\n<td>\n<p>\u59cb\u7ec8\u4fdd\u7559Tag<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>Hybrid<\/td>\n<td>\n<p>\u6df7\u5408\u6a21\u5f0f&#xff08;\u90e8\u5206\u5382\u5546\u5982\u534e\u4e3a\u652f\u6301&#xff09;<\/p>\n<\/td>\n<td>\n<p>\u53ef\u914d\u7f6e\u662f\u5426\u5e26Tag<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Acess\u7aef\u53e3\u6536\u62a5\u6587&#xff1a;\u6536\u5230\u4e00\u4e2a\u62a5\u6587,\u5224\u65ad\u662f\u5426\u6709VLAN\u4fe1\u606f&#xff1a;\u5982\u679c\u6ca1\u6709\u5219\u6253\u4e0a\u7aef\u53e3\u7684PVID&#xff0c;\u5e76\u8fdb\u884c\u4ea4\u6362\u8f6c\u53d1,\u5982\u679c\u6709\u5219\u76f4\u63a5\u4e22\u5f03&#xff08;\u7f3a\u7701&#xff09;<\/p>\n<p>Acess\u7aef\u53e3\u53d1\u62a5\u6587&#xff1a;\u5c06\u62a5\u6587\u7684VLAN\u4fe1\u606f\u5265\u79bb&#xff0c;\u76f4\u63a5\u53d1\u9001\u51fa\u53bb<\/p>\n<p>trunk\u7aef\u53e3\u6536\u62a5\u6587&#xff1a; \u6536\u5230\u4e00\u4e2a\u62a5\u6587&#xff0c;\u5224\u65ad\u662f\u5426\u6709VLAN\u4fe1\u606f&#xff0c;\u5982\u679c\u6ca1\u6709\u5219\u6253\u4e0a\u7aef\u53e3\u7684PVID&#xff0c;\u5e76\u8fdb\u884c\u4ea4\u6362\u8f6c\u53d1&#xff1b;\u5982\u679c\u6709\u5224\u65ad\u8be5trunk\u7aef\u53e3\u662f\u5426\u5141\u8bb8\u8be5 2\u7684\u6570\u636e\u8fdb\u5165&#xff1a;\u5982\u679c\u5141\u8bb8\u5219\u62a5\u6587\u643a\u5e26\u539f\u6709VLAN\u6807\u8bb0\u8fdb\u884c\u8f6c\u53d1&#xff0c;\u5426\u5219\u4e22\u5f03\u8be5\u62a5\u6587\u3002<\/p>\n<p>trunk\u7aef\u53e3\u53d1\u62a5\u6587&#xff1a; \u6bd4\u8f83\u7aef\u53e3\u7684PVID\u548c\u5c06\u8981\u53d1\u9001\u62a5\u6587\u7684VLAN\u4fe1\u606f&#xff0c;\u5982\u679c\u4e24\u8005\u76f8\u7b49\u5219\u5265\u79bbVLAN\u4fe1\u606f&#xff0c;\u518d\u53d1\u9001&#xff0c;\u5426\u5219\u62a5\u6587\u5c06\u643a\u5e26\u539f\u6709\u7684VLAN\u6807\u8bb0\u8fdb\u884c\u8f6c\u53d1\u3002<\/p>\n<\/p>\n<p class=\"img-center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\u56fe\u7247\" height=\"601\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813135440-689c9920d7317.png\" width=\"1039\" \/><\/p>\n<\/p>\n<h3>5.\u00a0VLAN\u6570\u636e\u8f6c\u53d1\u5b9e\u4f8b<\/h3>\n<\/p>\n<h3>5.1\u00a0access\u8f6c\u53d1\u5b9e\u4f8b<\/h3>\n<\/p>\n<p class=\"img-center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\u56fe\u7247\" height=\"339\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813135442-689c9922c602f.png\" width=\"907\" \/><\/p>\n<p>\u4e0a\u56fe\u4e2d&#xff0c;pc1\u4e0d\u80fdping\u901apc2&#xff0c;\u56e0\u4e3a\u540c\u4e00\u4ea4\u6362\u673a\u5185\u4ecepc1\u8fdb\u5165\u4ea4\u6362\u673aA\u7684access\u53e3\u7684\u6570\u636e\u5305\u88ab\u6253\u4e0a\u4e86VLAN10\u7684\u6807\u8bb0&#xff0c;\u800c\u548cpc2\u76f8\u8fde\u7684access\u7684\u662fVLAN20&#xff0c;\u4ece\u4e0a\u9762\u603b\u7ed3\u76842&#xff09;\u6761\u4e0d\u6ee1\u8db3&#xff0c;\u65e0\u6cd5ping\u901a\u3002\u540c\u7406&#xff0c;pc1\u548cpc3\u4e5f\u4e0d\u80fdping\u901a\u3002<\/p>\n<p>\u4e0a\u56fe\u4e2d&#xff0c;pc2\u548cpc3\u80fd\u4e92ping\u901a\u3002\u56e0\u4e3a\u6570\u636e\u5305\u4ecepc2\u8fdb\u5165\u4ea4\u6362\u673aA\u7684access\u53e3\u65f6&#xff0c;\u88ab\u6253\u4e0a\u4e86VLAN20\u7684\u6807\u8bb0&#xff1b;\u4ea4\u6362\u673aA\u4e0eB\u76f8\u8fde\u7684access\u53e3\u662fVLAN20&#xff0c;\u6240\u4ee5\u6570\u636e\u5305\u53ef\u4ee5\u4ece\u8be5\u53e3\u53d1\u51fa\u3002\u53d1\u51fa\u7684\u65f6\u5019\u53bb\u6389\u4e86VLAN20\u7684\u6807\u8bb0&#xff0c;\u5230B\u65f6&#xff0c;\u7531\u4e8e\u6ca1\u6709\u6807\u8bb0&#xff0c;\u53ef\u4ee5\u88abB\u7684\u5de6\u8fb9\u7684access\u53e3\u63a5\u6536\u5e76\u6253\u4e0aVLAN10\u7684\u6807\u8bb0\u3002\u7531\u4e8eB\u7684\u53f3\u8fb9\u7684access\u53e3\u4e5f\u5c5e\u4e8eVLAN10&#xff0c;\u6240\u4ee5\u6570\u636e\u5305\u53ef\u4ee5\u4ece\u8be5\u53e3\u51fa&#xff08;\u51fa\u7684\u65f6\u5019\u53bb\u9664\u6389VLAN10\u7684\u6807\u8bb0&#xff0c;\u5e76\u5230\u8fbepc3&#xff09;<\/p>\n<\/p>\n<h3>5.2\u00a0Trunk\u8f6c\u53d1\u5b9e\u4f8b<\/h3>\n<\/p>\n<p 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