{"id":555,"date":"2025-10-22T16:07:28","date_gmt":"2025-10-22T08:07:28","guid":{"rendered":"https:\/\/www.youvii.site\/?p=555"},"modified":"2025-10-22T16:07:28","modified_gmt":"2025-10-22T08:07:28","slug":"is-isyuanliyupeizhi","status":"publish","type":"post","link":"https:\/\/www.youvii.site\/index.php\/archives\/is-isyuanliyupeizhi","title":{"rendered":"IS-IS\u539f\u7406\u4e0e\u914d\u7f6e"},"content":{"rendered":"<h1>IS-IS\u539f\u7406\u4e0e\u914d\u7f6e<\/h1>\n<p>ISIS\uff08Intermediate System to Intermediate System\uff09\u4e2d\u95f4\u7cfb\u7edf\u5230\u4e2d\u95f4\u7cfb\u7edf\u662fISO\uff08International Organization for Standardization\uff09\u56fd\u9645\u6807\u51c6\u5316\u7ec4\u7ec7\u4e3a\u5b83\u7684CLNP\uff08ConnectionLessNetwork Protocol\uff09\u65e0\u8fde\u63a5\u7f51\u7edc\u534f\u8bae \u8bbe\u8ba1\u7684\u4e00\u79cd\u52a8\u6001\u8def\u7531\u534f\u8bae\u3002<\/p>\n<p>\u968f\u7740TCP\/IP\u534f\u8bae\u7684\u6d41\u884c\uff0c\u4e3a\u4e86\u63d0\u4f9b\u5bf9IP\u8def\u7531\u7684\u652f\u6301\uff0cIETF\u5728RFC1195\u4e2d\u5bf9IS-IS\u8fdb\u884c\u4e86\u6269\u5145\u548c\u4fee\u6539\uff0c\u4f7f\u5b83\u80fd\u540c\u65f6\u5e94\u7528\u5728TCP\/IP\u548cOSI\uff08\u5f00\u653e\u7cfb\u7edf\u4e92\u8054\uff09\u73af\u5883\u4e2d\uff0c\u5c06\u6269\u5c55\u540e\u7684IS-IS\u79f0\u4e3a\u96c6\u6210IS-IS<\/p>\n<p>IS-IS\u57fa\u672c\u6982\u5ff5<\/p>\n<div class=\"table-responsive\"><table class=\"table\" >\n<thead>\n<tr>\n<th>\u96c6\u6210IS-IS\u7279\u70b9<\/th>\n<th>OSPF\u7279\u70b9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u652f\u6301CLNP\u3001IP\u7f51\u7edc<\/td>\n<td>\u53ea\u652f\u6301IP\u7f51\u7edc<\/td>\n<\/tr>\n<tr>\n<td>\u91c7\u7528\u6570\u636e\u94fe\u8def\u5c42\u5c01\u88c5<\/td>\n<td>\u91c7\u7528IP\u62a5\u6587\u5c01\u88c5<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p>ISIS\u662f\u4e00\u79cd\u94fe\u8def\u72b6\u6001\u8def\u7531\u534f\u8bae\uff0cISIS\u4e0eOSPF\u5728\u8bb8\u591a\u65b9\u9762\u975e\u5e38\u76f8\u4f3c\uff0c\u4f8b\u5982\u8fd0\u884c\u8be5\u534f\u8bae\u7684\u76f4\u8fde\u8bbe\u5907\u53d1\u9001Hello\u62a5\u6587\u53d1\u73b0\u5f7c\u6b64\uff0c\u7136\u540e\u5efa\u7acb\u90bb\u63a5\u5173\u7cfb\uff0c\u5e76\u4ea4\u4e92\u94fe\u8def\u72b6\u6001\u4fe1\u606f<\/p>\n<p>CLNS\u7531\u4e00\u4e0b\u4e09\u4e2a\u90e8\u5206\u7ec4\u6210<\/p>\n<p>CLNP\u7c7b\u4f3cTCP\/IP\u4e2d\u7684IP\u534f\u8bae<\/p>\n<p>ISIS\u7c7b\u4f3cTCP\/IP\u4e2d\u7684OSPF<\/p>\n<p>ESIS\u7c7b\u4f3cTCP\/IP\u4e2d\u7684ARP\u3001ICMP<\/p>\n<p>ES\uff1aEnd System \u7ec8\u7aef\u7cfb\u7edf<\/p>\n<p>ES-IS End System to Intermediate System \u7ec8\u7aef\u7cfb\u7edf\u5230\u4e2d\u95f4\u7cfb\u7edf<\/p>\n<p>NASP\uff08Network Service Access Point \u7f51\u7edc\u670d\u52a1\u8bbf\u95ee\u70b9\uff09\u662fOSI\u534f\u8bae\u6808\u7528\u4e8e\u5b9a\u4f4d\u8d44\u6e90\u7684\u5730\u5740<\/p>\n<p>\u4e3b\u8981\u7528\u4e8e\u63d0\u4f9b\u7f51\u7edc\u5c42\u548c\u4e0a\u5c42\u5e94\u7528\u4e4b\u95f4\u7684\u63a5\u53e3<\/p>\n<p>NASP\u5305\u62ecIDP\u53caDSP<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e6f6c97a.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833205404-c5553f4a-57fb-4553-b20d-cbc5d1d03087.png\" \/><\/p>\n<p>NET\uff08Network Entity Title\uff09\u7f51\u7edc\u5b9e\u4f53\u540d\u79f0 \u662fOSI\u534f\u8bae\u6808\u4e2d\u8bbe\u5907\u7684\u7f51\u7edc\u5c42\u4fe1\u606f\uff0c\u4e3b\u8981\u7528\u4e8e\u8def\u7531\u8ba1\u7b97\uff0c\u7531Area ID \u548c System ID \u7ec4\u6210 \u53ef\u4ee5\u770b\u505a\u7279\u6b8a\u7684NSAP<\/p>\n<p>NET\u7684\u957f\u5ea6\u4e0eNSAP\u76f8\u540c \u6700\u957f\u4e3a20Byte \u6700\u77ed\u4e3a88Byte<\/p>\n<p>\u5728IP\u7f51\u7edc\u4e2d\u8fd0\u884cISIS\u65f6\uff0c\u53ea\u9700\u914d\u7f6eNET\u6839\u636eNET\u5730\u5740\u8bbe\u5907\u53ef\u4ee5\u83b7\u53d6\u5230Area ID\u53caSystem ID<\/p>\n<p>Area ID \u7531IDP\u548cDSP\u4e2d\u7684High Order DSP\u7ec4\u6210\uff0c\u65e2\u80fd\u8868\u793a\u8def\u7531\u57df \u4e5f\u80fd\u6807\u8bc6\u8def\u7531\u57df\u4e2d\u7684\u533a\u57df\u3002\u56e0\u6b64\uff0c\u5b83\u4eec\u88ab\u79f0\u4e3a\u533a\u57df\u5730\u5740\uff0c\u76f8\u5f53\u4e8eOSPF\u4e2d\u7684\u533a\u57df\u7f16\u53f7<\/p>\n<p>\u4e00\u822c\u60c5\u51b5\u4e0b \u4e00\u4e2a\u8def\u7531\u5668\u53ea\u9700\u8981\u914d\u7f6e\u4e00\u4e2a\u533a\u57df\u5730\u5740\uff0c\u4e14\u540c\u4e00\u533a\u57df\u4e2d\u6240\u6709\u8282\u70b9\u7684\u533a\u57df\u5730\u5740\u90fd\u8981\u76f8\u540c\u3002\u4e3a\u4e86\u652f\u6301\u533a\u57df\u7684\u5e73\u6ed1\u5408\u5e76\u3001\u5206\u5272\u53ca\u8f6c\u6362\uff0c\u7f3a\u7701\u60c5\u51b5\u4e0b\uff0c\u4e00\u4e2aISIS\u8fdb\u7a0b\u6700\u591a\u53ef\u914d\u7f6e3\u4e2a\u533a\u57df\u5730\u5740<\/p>\n<p>System ID\u7528\u6765\u5728\u533a\u57df\u5185\u552f\u4e00\u6807\u8bc6\u4e3b\u673a\u6216\u8def\u7531\u5668\u3002\u5728\u8bbe\u5907\u7684\u5b9e\u73b0\u4e2d\uff0c\u957f\u5ea6\u56fa\u5b9a\u4e3a6Byte<\/p>\n<p>NET\u914d\u7f6e<\/p>\n<p>\u6bcf\u53f0\u8fd0\u884cISIS\u7684\u7f51\u7edc\u8bbe\u5907\u81f3\u5c11\u6709\u4e00\u4e2aNET \uff0c\u4e00\u53f0\u8bbe\u5907\u4e5f\u53ef\u4ee5\u914d\u7f6e\u591a\u4e2aNET \u4f46\u662fNET\u7684System ID\u5fc5\u987b\u76f8\u540c<\/p>\n<p>\u5728\u534e\u4e3a\u7684\u7f51\u7edc\u8bbe\u5907\u4e0a System ID \u7684\u957f\u5ea6\u603b\u662f\u56fa\u5b9a\u76846Byte\uff0c\u5728\u4e00\u4e2aISIS\u8def\u7531\u57df\u4e2d\uff0c\u8bbe\u5907\u7684System ID\u5fc5\u987b\u552f\u4e00\uff0c\u4e3a\u4e86\u4fbf\u4e8e\u7ba1\u7406\uff0c\u4e00\u822c\u6839\u636eRouter ID\u914d\u7f6eSystem ID<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e71d107d.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833205301-0d80b89d-dc4d-49f8-8da0-824a8fdcb191.png\" \/><\/p>\n<p>ISIS\u548cOSPF\u533a\u57df\u5212\u5206\u7684\u533a\u522b<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e75a12ce.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833205379-65a8eb7f-0f31-4276-a57a-90246e496ea6.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e7d4b1fa.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833205350-dc329b5d-63e3-45d6-97f7-81348665708b.png\" \/><\/p>\n<p>Level-1\u8def\u7531\u5668:<\/p>\n<p>Level-1\u8def\u7531\u5668\u662fISIS\u533a\u57df\u8def\u7531\u5668 \u53ea\u4e0e\u540c\u4e00\u533a\u57df\u7684Level-1\u548cLevel1-2\u8def\u7531\u5668\u5f62\u6210\u90bb\u63a5\u5173\u7cfb\uff0c\u8fd9\u79cd\u5173\u7cfb\u79f0\u4e3aLevel-1\u90bb\u63a5\u5173\u7cfb\u3002Level-1\u8def\u7531\u5668\u65e0\u6cd5\u4e0eLevel-2\u8def\u7531\u5668\u5efa\u7acb\u90bb\u63a5\u5173\u7cfb<\/p>\n<p>Level-1\u8def\u7531\u5668\u53ea\u8d1f\u8d23\u7ef4\u62a4Level-1\u7684\u94fe\u8def\u72b6\u6001\u6570\u636e\u5e93LSDB\uff0c\u8be5LSDB\u53ea\u5305\u542b\u672c\u533a\u57df\u7684\u8def\u7531\u4fe1\u606f\u3002\u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0cLevel-1\u8def\u7531\u5668\u5fc5\u987b\u901a\u8fc7Level1-2\u8def\u7531\u5668\u63a5\u5165ISIS\u9aa8\u5e72\u533a\u57df\u4ece\u800c\u8bbf\u95ee\u5176\u4ed6\u533a\u57df<\/p>\n<p>Level-2\u8def\u7531\u5668\uff1a<\/p>\n<p>Level-2\u8def\u7531\u5668\u662f\u9aa8\u5e72\u8def\u7531\u5668\uff0c\u53ef\u4ee5\u548c\u540c\u4e00\u533a\u57df\u6216\u4e0d\u540c\u533a\u57df\u7684Level-2\u8def\u7531\u5668\u6216\u8005Level1-2\u8def\u7531\u5668\u5f62\u6210\u90bb\u63a5\u5173\u7cfb\uff0cLevel-2\u8def\u7531\u5668\u7ef4\u62a4\u4e00\u4e2aLevel-2\u7684LSDB\uff0c\u8be5LSDB\u5305\u542b\u6574\u4e2aISIS\u57df\u7684\u6240\u6709\u8def\u7531\u4fe1\u606f\u3002<\/p>\n<p>\u6240\u6709Level-2\u7ea7\u522b\u7684\u8def\u7531\u5668\u7ec4\u6210\u8def\u7531\u57df\u7684\u9aa8\u5e72\u7f51\uff0c\u8d1f\u8d23\u5728\u4e0d\u540c\u533a\u57df\u95f4\u901a\u4fe1\uff0c\u8def\u7531\u57df\u4e2dLevel-2\u7ea7\u522b\u7684\u8def\u7531\u5668\u5fc5\u987b\u662f\u7269\u7406\u8fde\u7eed\u7684\uff0c\u4ee5\u4fdd\u8bc1\u9aa8\u5e72\u7f51\u7684\u8fde\u7eed\u6027\u3002<\/p>\n<p>Level 1-2\u8def\u7531\u5668\uff1a<\/p>\n<p>Level 1-2\u8def\u7531\u5668\u57dfOSPF\u7684ABR\u975e\u5e38\u76f8\u4f3c\uff0c\u4e5f\u662fISIS\u9aa8\u5e72\u7f51\u7edc\u7ec4\u6210\u90e8\u5206<\/p>\n<p>\u7ef4\u62a4\u4e24\u4e2aLSDB\uff0cLevel-1\u7684LSDB\u7528\u4e8e\u533a\u57df\u5185\u8def\u7531\uff0cLevel-2\u7684LSDB\u7528\u4e8e\u533a\u57df\u95f4\u8def\u7531<\/p>\n<p>\u540c\u65f6\u5c5e\u4e8eLevel-1\u548cLevel-2\u7684\u8def\u7531\u79f0\u4e3aLevel 1-2\u8def\u7531\u5668\uff0c\u53ef\u4ee5\u4e0e\u540c\u4e00\u533a\u57df\u7684Level-1\u548cLevel 1-2\u5f62\u6210Level-1\u90bb\u63a5\u5173\u7cfb\uff0c\u4e5f\u53ef\u4ee5\u4e0e\u5176\u4ed6\u533a\u57df\u7684Level-2\u548cLevel 1-2\u8def\u7531\u5668\u5f62\u6210 Level-2\u7684\u90bb\u63a5\u5173\u7cfb<\/p>\n<p>\u5728\u534e\u4e3a\u8def\u7531\u5668\u4e0a\u914d\u7f6eISIS\u65f6\uff0c\u7f3a\u7701\u65f6\uff0c\u8def\u7531\u5668\u5168\u5c40Level\u4e3a1-2\uff0c\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u4fee\u6539\u8be5\u8bbe\u5907\u7c7b\u578b<\/p>\n<p>ISIS\u652f\u6301\u7684\u7f51\u7edc\u7c7b\u578b\uff1a<\/p>\n<p>\u5e7f\u64ad<\/p>\n<p>\u70b9\u5230\u70b9\uff08P2P\uff09<\/p>\n<p>\u5bf9\u4e8eNMBA\u7f51\u7edc\uff0c\u9700\u8981\u914d\u7f6e\u5b50\u63a5\u53e3\uff0c\u5e76\u6ce8\u610f\u5b50\u63a5\u53e3\u7c7b\u578b\u5e94\u914d\u7f6e\u4e3aP2P<\/p>\n<p>ISIS\u5f00\u9500\u503c<\/p>\n<p>ISIS\u4f7f\u7528COst\u4f5c\u4e3a\u8def\u7531\u5ea6\u91cf\u503c<\/p>\n<p>Cost\u8d8a\u5c0f\u8def\u5f84\u8d8a\u4f18\uff0cISIS\u94fe\u8def\u7684Cost\u4e0e\u8bbe\u5907\u7684\u63a5\u53e3\u6709\u5173\uff0c\u4e0eOSPF\u7c7b\u4f3c\uff0c\u6bcf\u4e00\u4e2a\u6fc0\u6d3b\u4e86ISIS\u7684\u63a5\u53e3\u90fd\u4f1a\u7ef4\u62a4Cost <\/p>\n<p>\u4e0eOSPF\u4e0d\u540c\u7684\u662f\uff0cISIS\u63a5\u53e3\u7684Cost\u5728\u7f3a\u7701\u60c5\u51b5\u4e0b\u5e76\u4e0d\u4e0e\u63a5\u53e3\u5e26\u5bbd\u76f8\u5173\uff0c\u65e0\u8bba\u63a5\u53e3\u5e26\u5bbd\u591a\u5927\uff0c\u7f3a\u7701\u65f6\u7684Cost\u4e3a10<\/p>\n<p>\u4e00\u6761ISIS\u8def\u5f84\u7684Cost\u7b49\u4e8e\u672c\u8def\u7531\u5668\u5230\u8fbe\u76ee\u6807\u7f51\u6bb5\u6cbf\u9014\u7684\u6240\u6709\u94fe\u8def\u7684Cost\u603b\u548c<\/p>\n<p>ISIS\u6709\u4e09\u79cd\u65b9\u5f0f\u6765\u786e\u5b9a\u63a5\u53e3\u7684\u5f00\u9500\uff0c\u6309\u7167\u4f18\u5148\u7ea7\u7531\u9ad8\u5230\u4f4e\uff1a<\/p>\n<p>\u63a5\u53e3\u5f00\u9500\uff1a\u4e3a\u5355\u4e2a\u63a5\u53e3\u8bbe\u7f6e\u5f00\u9500<\/p>\n<p>\u5168\u5c40\u5f00\u9500\uff1a\u4e3a\u6240\u6709\u63a5\u53e3\u8bbe\u7f6e\u5f00\u9500<\/p>\n<p>\u81ea\u52a8\u8ba1\u7b97\u5f00\u9500\uff1a\u6839\u636e\u63a5\u53e3\u5e26\u5bbd\u81ea\u52a8\u8ba1\u7b97\u5f00\u9500<\/p>\n<p>\u5728\u65e9\u671f\uff0c\u4f7f\u80fdISIS\u7684\u63a5\u53e3\u4e0b\u6700\u5927\u53ea\u80fd\u914d\u7f6e63\u7684\u5f00\u9500\u503c\uff0c\u6b64\u65f6ISIS\u5f00\u9500\u503c\u7c7b\u578b\u4e3anarrow\uff0c\u4f46\u662f\u5728\u5927\u578b\u7f51\u7edc\u4e2d\uff0c\u8f83\u5c0f\u7684\u5ea6\u91cf\u503c\u8303\u56f4\u4e0d\u80fd\u6ee1\u8db3\u5b9e\u9645\u9700\u6c42\uff0cRFC3784\u4e2d\u4f7f\u80fdISIS\u63a5\u53e3\u5f00\u9500\u503c\u80fd\u6269\u5c55\u52301677215\uff0c\u6b64\u65f6\u5f00\u9500\u7c7b\u578b\u4e3awide<\/p>\n<p>\u7f3a\u7701\u65f6\uff0c\u534e\u4e3a\u8def\u7531\u5668\u91c7\u7528\u5f00\u9500\u7c7b\u578b\u4e3anarrow<\/p>\n<p>TLV\uff1a<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e84adb13.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833205349-a532e908-0adb-4714-8258-54e65638b414.png\" \/><\/p>\n<p>ISIS\u62a5\u6587\u683c\u5f0f\uff1a<\/p>\n<p>ISIS\u62a5\u6587\u662f\u76f4\u63a5\u5c01\u88c5\u5728\u6570\u636e\u94fe\u8def\u5c42\u7684\u5e27\u7ed3\u6784\u4e2d<\/p>\n<p>PDU\uff08\u534f\u8bae\u6570\u636e\u5355\u5143\uff09\u5206\u4e3a\u4e24\u4e2a\u90e8\u5206\uff0c\u62a5\u6587\u5934\u548c\u53d8\u957f\u5b57\u6bb5\u90e8\u5206<\/p>\n<p>\u5176\u4e2dISIS\u5934\u90e8\u53c8\u53ef\u4ee5\u5206\u4e3a\u901a\u7528\u5934\u90e8\u548c\u4e13\u7528\u5934\u90e8\u3002\u5bf9\u4e8e\u6240\u6709PDU\u6765\u8bf4 \u901a\u7528\u5934\u90e8\u662f\u76f8\u540c\u7684\uff0c\u4f46\u4e13\u7528\u62a5\u5934\u6839\u636ePDU\u7c7b\u578b\u4e0d\u540c\u6709\u6240\u5dee\u522b\u3002<\/p>\n<p>ISIS\u901a\u7528\u5934\u90e8\uff1a<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e878d05e.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833208000-e402f244-617e-4e5e-9d28-d2c827df4943.png\" \/><\/p>\n<p>ISIS\u62a5\u6587\u7c7b\u578b\u6982\u8ff0\uff1a<\/p>\n<p>ISIS\u7684PDU\u6709\u56db\u79cd\u7c7b\u578b\uff1a<\/p>\n<p>IIH:ISIS Hello<\/p>\n<p>LSP\uff1aLink State PDU \u94fe\u8def\u72b6\u6001\u62a5\u6587<\/p>\n<p>CSNP\uff1aComplete Sequence Number PDU\u5168\u5e8f\u5217\u53f7\u62a5\u6587<\/p>\n<p>PSNP\uff1aPartial Sequence Number PDU \u90e8\u5206\u5e8f\u5217\u53f7\u62a5\u6587<\/p>\n<p>IIH\uff1a\u7528\u4e8e\u5efa\u7acb\u548c\u7ef4\u6301\u90bb\u63a5\u5173\u7cfb\uff0c\u5e7f\u64ad\u7f51\u7edc\u4e2d\u7684Level -1 ISIS\u8def\u7531\u5668\u4f7f\u7528Level-1 LAN IIH\uff1b\u5e7f\u64ad\u7f51\u7edc\u4e2d\u7684Level-2 ISIS\u8def\u7531\u5668\u4f7f\u7528Level-2 LAN IIH\uff1b\u70b9\u5230\u70b9\u7f51\u7edc\u4e2d\u5219\u4f7f\u7528P2P IIH<\/p>\n<p>LSP\uff1a\u7528\u4e8e\u4ea4\u6362\u94fe\u8def\u72b6\u6001\u4fe1\u606f\uff0cLSP\u5206\u4e3a\u4e24\u79cd\uff1aLevel-1 LSP\u3001 Level-2 LSP<\/p>\n<p>SNP\uff1a\u901a\u8fc7\u63cf\u8ff0\u5168\u90e8\u6216\u90e8\u5206\u94fe\u8def\u6570\u636e\u5e93\u4e2d\u7684LSP\u6765\u540c\u6b65LSDB\uff0c\u4ece\u800c\u7ef4\u62a4LSDB\u7684\u5b8c\u6574\u4e0e\u540c\u6b65\u3002SNP\u5305\u62ecCSNP\u548cPSNP\uff0c\u8fdb\u4e00\u6b65\u5206\u4e3a Level-1 CSNP\u3001Level-2 CSNP\u3001Level-1 PSNp\u548cLevel-2 PSNP<\/p>\n<p>ISIS\u5e38\u89c1\u7684TLV<\/p>\n<p>TLV\u542b\u4e49\uff1aT \u7c7b\u578b type \u3001 L \u957f\u5ea6 length \u3001 V \u503c value<\/p>\n<p>\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u6570\u636e\u7ed3\u6784<\/p>\n<p>\u4f7f\u7528TLV\u7ed3\u6784\u6784\u5efa\u62a5\u6587\u7684\u597d\u5904\u662f\u7075\u6d3b\u6027\u548c\u6269\u5c55\u6027<\/p>\n<p>\u91c7\u7528TLV\u4f7f\u5f97\u62a5\u6587\u7684\u6574\u4f53\u7ed3\u6784\u56fa\u5b9a\uff0c\u589e\u52a0\u65b0\u7279\u6027\u53ea\u9700\u8981\u589e\u52a0\u65b0TLV\u800c\u4e0d\u6539\u53d8\u6574\u4e2a\u62a5\u6587\u7684\u6574\u4f53\u7ed3\u6784<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e8a89c15.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833208022-6818013b-70de-4483-a3d6-0341565cee05.png\" \/><\/p>\n<p><strong>ISIS\u5de5\u4f5c\u539f\u7406<\/strong><\/p>\n<p>\u90bb\u63a5\u5173\u7cfb\u5efa\u7acb\uff1a<\/p>\n<p>\u53ea\u6709\u540c\u4e00\u5c42\u6b21\u7684\u76f8\u90bb\u8def\u7531\u5668\u624d\u6709\u53ef\u80fd\u6210\u4e3a\u90bb\u63a5<\/p>\n<p>\u5bf9\u4e8eLevel-1\u8def\u7531\u5668\u6765\u8bf4 Area ID\u5fc5\u987b\u4e00\u81f4<\/p>\n<p>\u94fe\u8def\u4e24\u7aefISIS\u63a5\u53e3\u7f51\u7edc\u7c7b\u578b\u5fc5\u987b\u4e00\u81f4<\/p>\n<p>\u94fe\u8def\u4e24\u7aefISIS\u63a5\u53e3\u7684\u5730\u5740\u5fc5\u987b\u5904\u4e8e\u540c\u4e00\u7f51\u6bb5\uff08\u9ed8\u8ba4\uff09<\/p>\n<p>\u7531\u4e8eISIS\u662f\u76f4\u63a5\u8fd0\u884c\u4e8e\u6570\u636e\u94fe\u8def\u5c42\uff0cISIS\u5173\u7cfb\u5f62\u6210\u4e0eIP\u5730\u5740\u65e0\u5173<\/p>\n<p>\u5728\u5b9e\u9645\u5de5\u4f5c\u4e2d\uff0c\u5728IP\u7f51\u7edc\u4e0a\u8fd0\u884cISIS\u65f6\uff0c\u9700\u8981\u68c0\u67e5\u5bf9\u65b9\u7684IP\u5730\u5740\uff0c\u5982\u679c\u63a5\u53e3\u914d\u7f6e\u4e86\u4eceIP\uff0c\u90a3\u4e48\u53ea\u8981\u53cc\u65b9\u6709\u67d0\u4e2aIP\u5728\u540c\u4e00\u7f51\u6bb5\uff0c\u5c31\u80fd\u5efa\u7acb\u90bb\u63a5\uff0c\u4e0d\u4e00\u5b9a\u8981\u4e3bIP\u76f8\u540c<\/p>\n<p>\u901a\u8fc7\u5c06\u4ee5\u592a\u7f51\u63a5\u53e3\u6a21\u62df\u6210\u70b9\u5230\u70b9\u63a5\u53e3\uff0c\u53ef\u4ee5\u5efa\u7acb\u70b9\u5230\u70b9\u94fe\u8def\u90bb\u63a5\u5173\u7cfb<\/p>\n<p>\u5f53\u94fe\u8def\u4e24\u7aefISIS\u63a5\u53e3\u7684\u5730\u5740\u4e0d\u5728\u540c\u4e00\u7f51\u6bb5\u65f6\uff0c\u5982\u679c\u914d\u7f6e\u63a5\u53e3\u5bf9\u63a5\u53d7\u7684Hello\u62a5\u6587\u4e0d\u4f5cIP\u5730\u5740\u68c0\u67e5\uff0c\u4e5f\u53ef\u4ee5\u5efa\u7acb\u90bb\u63a5\u5173\u7cfb<\/p>\n<p>\u5bf9\u4e8e\u70b9\u5230\u70b9\u63a5\u53e3\uff0c\u53ef\u4ee5\u914d\u7f6e\u5ffd\u7565IP\u5730\u5740\u68c0\u67e5<\/p>\n<p>\u5bf9\u4e8e\u4ee5\u592a\u7f51\u63a5\u53e3\uff0c\u9700\u8981\u5c06\u4ee5\u592a\u7f51\u63a5\u53e3\u6a21\u62df\u6210\u70b9\u5230\u70b9\u63a5\u53e3\u7136\u540e\u914d\u7f6eIP\u5730\u5740\u68c0\u67e5<\/p>\n<p>\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u4e00\u4e2a\u63a5\u53e3\u53ea\u9700\u8981\u914d\u7f6e\u4e00\u4e2aIP\u4e3b\u5730\u5740\uff0c\u4f46\u7279\u6b8a\u60c5\u51b5\u9700\u8981\u914d\u7f6e\u4ece\u5730\u5740\uff1a\u4e00\u53f0\u8def\u7531\u5668\u901a\u8fc7\u4e00\u4e2a\u63a5\u53e3\u8fde\u63a5\u4e86\u4e00\u4e2a\u7269\u7406\u7f51\u7edc\uff0c\u4f46\u8be5\u7269\u7406\u7f51\u7edc\u7684\u8ba1\u7b97\u673a\u5206\u522b\u5c5e\u4e8e2\u4e2a\u4e0d\u540c\u7684\u7f51\u7edc\uff0c\u4e3a\u4e86\u4f7f\u8def\u7531\u5668\u4e0e\u7269\u7406\u7f51\u7edc\u4e2d\u7684\u6240\u6709\u8ba1\u7b97\u673a\u901a\u4fe1\uff0c\u9700\u8981\u5728\u8be5\u63a5\u53e3\u914d\u7f6e\u4e00\u4e2a\u4e3bIP\u548c\u4eceIP\u3002\u8def\u7531\u5668\u7684\u6bcf\u4e2a\u4e09\u5c42\u63a5\u53e3\u53ef\u4ee5\u914d\u7f6e\u591a\u4e2aIP\u5730\u5740\uff0c\u5176\u4e2d\u4e00\u4e2a\u4e3a\u4e3bIP\u5176\u4f59\u4e3a\u4eceIP\uff0c\u6bcf\u4e2a\u4e09\u5c42\u63a5\u53e3\u6700\u591a\u53ef\u4ee5\u914d31\u4e2a\u5730\u5740<\/p>\n<p>IIH\uff1aISIS Hello \u62a5\u6587\u7528\u4e8e\u5efa\u7acb\u548c\u7ef4\u6301\u90bb\u63a5\u5173\u7cfb\uff0c\u7528\u4e8e\u5efa\u7acb\u548c\u7ef4\u6301\u90bb\u63a5\u5173\u7cfb\uff0c\u5e7f\u64ad\u7f51\u7edc\u4e2d\u7684Level -1 ISIS\u8def\u7531\u5668\u4f7f\u7528Level-1 LAN IIH\uff1b\u5e7f\u64ad\u7f51\u7edc\u4e2d\u7684Level-2 ISIS\u8def\u7531\u5668\u4f7f\u7528Level-2 LAN IIH\uff1b\u70b9\u5230\u70b9\u7f51\u7edc\u4e2d\u5219\u4f7f\u7528P2P IIH<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e8d4ffdb.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833208030-0a6334ff-fe9e-4e31-ad5c-92d295e13179.png\" \/><\/p>\n<p>\u5e7f\u64ad\u7f51\u7edc\u4e2d\u7684\u90bb\u63a5\u5173\u7cfb\u5efa\u7acb\u8fc7\u7a0b<\/p>\n<p>\u4e24\u53f0\u8fd0\u884cISIS\u7684\u8def\u7531\u5668\u5728\u4ea4\u4e92\u534f\u8bae\u62a5\u6587\u5b9e\u73b0\u8def\u7531\u529f\u80fd\u4e4b\u524d\u5fc5\u987b\u9996\u5148\u5efa\u7acb\u90bb\u63a5\u5173\u7cfb\uff0c\u5728\u4e0d\u540c\u7c7b\u578b\u7684\u7f51\u7edc\u4e0a\uff0cISIS\u7684\u90bb\u63a5\u5efa\u7acb\u65b9\u5f0f\u5e76\u4e0d\u76f8\u540c\uff0c\u5728\u5e7f\u64ad\u4e2d\u4f7f\u7528\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u90bb\u63a5\u5173\u7cfb<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e90c9f36.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833207993-9bf9678e-a8a2-4793-8699-28c4f291e95c.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e93156d3.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833207949-034ccff3-e3eb-4885-b892-41870ba47b78.png\" \/><\/p>\n<p>DIS\u4e0e\u4f2a\u8282\u70b9<\/p>\n<p>\u5728\u5e7f\u64ad\u7f51\u7edc\u4e2d\uff0cISIS\u9700\u8981\u5728\u6240\u6709\u8def\u7531\u5668\u9009\u4e3e\u4e00\u4e2a\u8def\u7531\u5668\u4e3aDIS\uff08Desighated Intermediate System\uff09<\/p>\n<p>DIS\u7528\u6765\u521b\u5efa\u548c\u66f4\u65b0\u4f2a\u8282\u70b9\uff0c\u5e76\u8d1f\u8d23\u751f\u6210\u4f2a\u8282\u70b9\u7684LSP\uff0c\u7528\u6765\u63cf\u8ff0\u8fd9\u4e2a\u7f51\u7edc\u4e0a\u6709\u54ea\u4e9b\u7f51\u7edc\u8bbe\u5907\uff0c\u4f2a\u8282\u70b9\u662f\u7528\u6765\u6a21\u62df\u5e7f\u64ad\u7f51\u7edc\u7684\u4e00\u4e2a\u865a\u62df\u8282\u70b9\uff0c\u5e76\u975e\u771f\u5b9e\u8def\u7531\u5668\uff0c\u5728ISIS\u4e2d \u4f2a\u8282\u70b9\u7528DIS\u7684System ID \u548c Circuit ID\uff08\u975e0\uff09\u6807\u8bc6<\/p>\n<p>ISIS\u4e2d\u7684DIS\u4e0eOSPF\u4e2d\u7684DR<\/p>\n<p>Level-1\u548cLevel-2\u7684DIS\u662f\u5206\u522b\u9009\u4e3e\u7684\uff0c\u7528\u6237\u53ef\u4ee5\u4e3a\u4e0d\u540c\u7ea7\u522b\u7684DIS\u9009\u4e3e\u8bbe\u7f6e\u4e0d\u540c\u4f18\u5148\u7ea7<\/p>\n<p>DIS\u9009\u4e3e\u89c4\uff1a<\/p>\n<p>DIS\u4f18\u5148\u7ea7\u6570\u503c\u6700\u5927\u7684\u88ab\u9009\u4e3aDIS<\/p>\n<p>\u5982\u679c\u4f18\u5148\u7ea7\u6570\u503c\u6700\u5927\u7684\u8def\u7531\u5668\u6709\u591a\u53f0\uff0c\u5219\u5176\u4e2dMAC\u5730\u5740\u6700\u5927\u7684\u8def\u7531\u5668\u6210\u4e3aDIS<\/p>\n<p>DIS\u53d1\u9001Hello PDU\u7684\u65f6\u95f4\u95f4\u9694\u662f\u666e\u901a\u8def\u7531\u5668\u7684\u4e09\u5206\u4e4b\u4e00\uff0c\u53ef\u4ee5\u786e\u4fddDIS\u51fa\u73b0\u6545\u969c\u80fd\u88ab\u5feb\u901f\u53d1\u73b0<\/p>\n<p>ISIS\u4e2dDIS\u4e0eOSPF\u4e2dDR\u7684\u533a\u522b\uff1a<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e96a4aa4.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833208544-b94ee912-b408-443c-b9f6-cf46cb64c9dd.png\" \/><\/p>\n<p>\u70b9\u5230\u70b9\u7f51\u7edc\u4e2d\u7684\u90bb\u63a5\u5173\u7cfb\u5efa\u7acb\u8fc7\u7a0b<\/p>\n<p>\u70b9\u5230\u70b9\u7f51\u7edc\u4e2d\uff0c\u90bb\u63a5\u5173\u7cfb\u7684\u5efa\u7acb\u4f7f\u7528\u4e24\u6b21\u63e1\u624b\uff1a\u53ea\u8981\u6536\u5230\u5bf9\u7aef\u53d1\u6765\u7684Hello\u62a5\u6587\uff0c\u5355\u65b9\u9762\u5ba3\u5e03\u90bb\u63a5\u4e3aup \u5efa\u7acb\u90bb\u63a5\u5173\u7cfb<\/p>\n<p>\u4e24\u6b21\u63e1\u624b\u673a\u5236\u5b58\u5728\u660e\u663e\u7f3a\u9677\uff0c\u534e\u4e3a\u8bbe\u5907\u5728\u70b9\u5230\u70b9\u7f51\u7edc\u4f7f\u7528ISIS\u65f6\u9ed8\u8ba4\u4f7f\u7528\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u90bb\u63a5\u5173\u7cfb\uff0c\u901a\u8fc7\u4e09\u6b21\u53d1\u9001P2P IIH\u6700\u7ec8\u5efa\u7acb\u90bb\u63a5\u5173\u7cfb<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e9900ba1.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833208522-6b0f27af-6981-4596-8818-41122ed079f1.png\" \/><\/p>\n<p>\u94fe\u8def\u72b6\u6001\u6570\u636e\u5e93\u540c\u6b65\uff1a<\/p>\n<p>ISIS\u94fe\u8def\u72b6\u6001\u62a5\u6587LSP\u7528\u4e8e\u4ea4\u6362\u94fe\u8def\u72b6\u6001\u4fe1\u606f\uff0cLSP\u5206\u4e3aLevel-1 LSP\u548cLevel-2 LSP<\/p>\n<p>L1 LSP\u7531L1\u8def\u7531\u5668\u4f20\u9001 L2 LSP\u7531 L2\u8def\u7531\u5668\u4f20\u9001<\/p>\n<p>Level1-2\u8def\u7531\u5668\u53ef\u4ee5\u4f20\u9001\u4e24\u79cd<\/p>\n<p>\u4e24\u7c7bLSP\u6709\u76f8\u540c\u7684\u62a5\u6587\u683c\u5f0f;<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e9b25bbb.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833208573-45d3352c-12b8-4750-9bac-7793793603fc.png\" \/><\/p>\n<p>ISIS\u7684LSDB\uff1a<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87e9d66f7b.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833208533-e791a96e-3bb0-4dba-ba24-b53bb71755c0.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ea559bb9.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833208532-e245d160-1780-4d4d-93eb-e820d4336e47.png\" \/><\/p>\n<p>\u67e5\u770b\u975e\u4f2a\u8282\u70b9LSP<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ea856627.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833209555-8865f67e-06fc-4af5-8ab5-be76ed4e8a31.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87eaa9e0e4.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833209531-f0b68ca2-f8b8-473b-90bc-4397e82181b4.png\" \/><\/p>\n<p>\u67e5\u770b\u4f2a\u8282\u70b9LSP<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ead1ed49.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833209589-db8054c3-44f6-4e6c-a33c-60035b9a317c.png\" \/><\/p>\n<p>CSNP\uff1a<\/p>\n<p>CSNP\u5305\u542b\u8be5\u8bbe\u5907LSDB\u4e2d\u6240\u6709LSP\u7684\u6458\u8981\uff0c\u8def\u7531\u5668\u901a\u8fc7\u4ea4\u4e92CSNP\u5224\u65ad\u662f\u5426\u9700\u8981\u540c\u6b65LSDB<\/p>\n<p>\u5728\u5e7f\u64ad\u7f51\u7edc\u4e0a\uff0cCSNP\u7531DIS\u5b9a\u671f\u53d1\u9001\uff08\u7f3a\u7701\u7684\u53d1\u9001\u5468\u671f\u4f2a10\u79d2\uff09<\/p>\n<p>\u5728\u70b9\u5230\u70b9\u7f51\u7edc\u4e0a\uff0cCSNP\u53ea\u5728\u7b2c\u4e00\u6b21\u5efa\u7acb\u90bb\u63a5\u5173\u7cfb\u65f6\u53d1\u9001\u3002<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87eaf47806.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833209604-3abb0f87-ca9a-46c5-802d-902103299e9d.png\" \/><\/p>\n<p>PSNP\uff1a<\/p>\n<p>PSNP\u53ea\u5305\u542b\u90e8\u5206LSP\u7684\u6458\u8981\u4fe1\u606f<\/p>\n<p>\u5f53\u53d1\u73b0LSDB\u4e0d\u540c\u6b65\u65f6\uff0cPSNP\u6765\u8bf7\u6c42\u90bb\u5c45\u53d1\u9001\u65b0\u7684LSP<\/p>\n<p>\u5728\u70b9\u5230\u70b9\u7684\u7f51\u7edc \u5f53\u6536\u5230LSP\u65f6\uff0c\u4f7f\u7528PSNP\u5bf9\u6536\u5230LSP\u8fdb\u884c\u786e\u8ba4<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87eb1ab1b5.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833209570-93b0c9ed-2f05-4316-a08b-0a4882d899cd.png\" \/><\/p>\n<p>\u5e7f\u64ad\u4e2d\u7684LSP\u540c\u6b65\u8fc7\u7a0b<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87eb3e2ed3.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833210980-df8da1e1-f49a-4c32-8702-64bc99d737f1.png\" \/><\/p>\n<p>\u70b9\u5230\u70b9\u7f51\u7edc\u4e2d\u7684LSP\u540c\u6b65\u8fc7\u7a0b<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87eba0f607.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833210776-68799efc-3449-4b7a-ba67-fc8329edd275.png\" \/><\/p>\n<p>LSP\u5904\u7406\u673a\u5236<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ebce4082.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833210786-ea0eb13c-584a-4999-a09a-e080886f3f78.png\" \/><\/p>\n<p>\u4ee5\u4e0b\u4e8b\u4ef6\u90fd\u4f1a\u89e6\u53d1\u4e00\u4e2a\u65b0\u7684LSP\uff1a<\/p>\n<p>\u90bb\u63a5UP or Down<\/p>\n<p>ISIS\u5148\u5173\u63a5\u53e3up or Down<\/p>\n<p>\u5f15\u5165\u7684IP\u8def\u7531\u53d1\u751f\u53d8\u5316<\/p>\n<p>\u533a\u57df\u95f4\u7684IP\u8def\u7531\u53d1\u751f\u53d8\u5316<\/p>\n<p>\u63a5\u53e3\u88ab\u8d4b\u4e86\u65b0\u7684metric\u503c<\/p>\n<p>\u5468\u671f\u6027\u66f4\u65b0\uff0815min\uff09<\/p>\n<p>\u8def\u7531\u8ba1\u7b97\uff1a<\/p>\n<p>Level-1\u8def\u7531\u5668\u7684\u8def\u7531\u8ba1\u7b97<\/p>\n<p>R1\u6839\u636eLSDB\u4e2dLevel-1 LSP\u8ba1\u7b97\u51fa\u8be5\u533a\u57df\u8def\u7531\uff0c\u4ee5\u53ca\u5404\u7f51\u6bb5\u8def\u7531\u4fe1\u606f<\/p>\n<p>R2R3\u4f5c\u4e3a1-2\u8def\u7531\u5668 \u4f1a\u5411\u8be5\u533a\u57df\u4e0b\u53d1\u7684-1LSP\u8bbe\u7f6eATT\u6807\u5fd7\u4f4d\uff0c\u7528\u4e8e\u5411-1\u8def\u7531\u5668\u4f20\u8fbe\u53ef\u4ee5\u901a\u5f80\u5176\u4ed6\u533a\u57df\uff0cLevel-1\u8def\u7531\u5668\u4f1a\u6839\u636e\u8be5\u6807\u5fd7\u4f4d\u8ba1\u7b97\u51fa\u6307\u5411R2\u6216R3\u7684\u9ed8\u8ba4\u8def\u7531<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ebfc0809.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833210817-7f160f2e-9fbd-4c34-904e-33af9e8f5cb6.png\" \/><\/p>\n<p>\u8def\u7531\u6e17\u900f\uff1a<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ec357f3a.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833210747-ff3f55d4-6262-4c6e-a109-86877ccaaea4.png\" \/><\/p>\n<p>Level 1-2\u7684\u8def\u7531\u8ba1\u7b97\uff1a<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ec6be154.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833212190-42743050-499a-4612-84ea-ea8600b6edd0.png\" \/><\/p>\n<p>Level-2\u7684\u8def\u7531\u8ba1\u7b97\uff1a<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ece588c4.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833212117-dd711666-c84e-4c87-94c4-e4c57d137afa.png\" \/><\/p>\n<p>ISIS\u7684\u57fa\u672c\u914d\u7f6e\uff1a<\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ed14e7e8.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833212212-5711c1e8-7558-44d6-8556-062c09a374b1.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ed40ba37.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833212189-cbfe1840-0d2c-471e-980f-c94d580dbb2e.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ed7a892e.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833212198-70e66369-b3ca-44a1-ba5a-777b8aca5ab8.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87edaef5ee.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833213820-8209712d-3562-4a49-b7ee-c5a4186371a8.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ede68091.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833213817-e715ef49-62ac-4a9a-9d52-bfd11d931bc6.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ee0d17b3.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833213814-51eab210-ca16-45ea-86e8-72fa70a376d6.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ee38e92f.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833213882-2afbdac0-d532-4a7c-bdd8-5ed1b77d7106.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ee5ee31f.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833213773-997e2d46-8463-46fb-928e-7cf1477fcece.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ee84cc2c.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833215543-caeb0158-0eec-4f02-8a22-8e52ec9e87ea.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87eecc55a6.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833215538-c9042fb5-ddab-4496-9558-2a15460ac739.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87eef62ed0.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833215532-9bb5e5b2-e420-450f-9f12-f30a380b6636.png\" \/><\/p>\n<p><img loading="lazy" decoding="async" decoding=\"async\"  src=\"https:\/\/www.youvii.site\/wp-content\/themes\/lolimeow-lolimeowV13.13\/assets\/images\/loading.gif\" data-src=\"https:\/\/cdn.picui.cn\/vip\/2025\/10\/22\/68f87ef1dd6d5.png\" class=\"lazy\" loading=\"lazy\" alt=\"1741833215684-3bb25aae-f07c-4d3c-9c36-d02b975ff392.png\" \/><\/p>\n<blockquote>\n<p>\u66f4\u65b0: 2025-03-13 10:33:41<br \/>\n\u539f\u6587: <a href=\"https:\/\/www.yuque.com\/yuhui.net\/network\/gw3dcklbamt5gbdz\">https:\/\/www.yuque.com\/yuhui.net\/network\/gw3dcklbamt5gbdz<\/a><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>IS-IS\u539f\u7406\u4e0e\u914d\u7f6e ISIS\uff08Intermediate System to Intermediate System\uff09\u4e2d\u95f4\u7cfb\u7edf\u5230\u4e2d\u95f4\u7cfb\u7edf\u662fISO\uff08International Organization for Standardization\uff09\u56fd\u9645\u6807\u51c6\u5316\u7ec4\u7ec7\u4e3a\u5b83\u7684CLNP\uff08ConnectionLessNetwork Protocol\uff09\u65e0\u8fde\u63a5\u7f51\u7edc\u534f\u8bae 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87,62,3],"tags":[],"class_list":["post-555","post","type-post","status-publish","format-standard","hentry","category-huaweihcip-datacom","category-huaweiluyouyujiaohuan","category-interface"],"_links":{"self":[{"href":"https:\/\/www.youvii.site\/index.php\/wp-json\/wp\/v2\/posts\/555","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.youvii.site\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.youvii.site\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.youvii.site\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.youvii.site\/index.php\/wp-json\/wp\/v2\/comments?post=555"}],"version-history":[{"count":0,"href":"https:\/\/www.youvii.site\/index.php\/wp-json\/wp\/v2\/posts\/555\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.youvii.site\/index.php\/wp-json\/wp\/v2\/media?parent=555"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.youvii.site\/index.php\/wp-json\/wp\/v2\/categories?post=555"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.youvii.site\/index.php\/wp-json\/wp\/v2\/tags?post=555"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}