{"id":11754,"date":"2023-04-02T12:08:14","date_gmt":"2023-04-02T19:08:14","guid":{"rendered":"https:\/\/www.xh86.me\/?p=11754"},"modified":"2023-04-02T12:08:14","modified_gmt":"2023-04-02T19:08:14","slug":"%e4%bb%80%e4%b9%88%e6%98%afis-is%ef%bc%9fis-is%e6%98%af%e5%a6%82%e4%bd%95%e5%b7%a5%e4%bd%9c%e7%9a%84%ef%bc%9f%e4%b8%80%e6%96%87%e5%b8%a6%e4%bd%a0%e4%ba%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.xh86.me\/?p=11754","title":{"rendered":"\u4ec0\u4e48\u662fIS-IS\uff1fIS-IS\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1f\u4e00\u6587\u5e26\u4f60\u4e86\u89e3"},"content":{"rendered":"
\n
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<\/section>\n<\/section>\n<\/section>\n
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<\/section>\n
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01<\/strong><\/p>\n<\/section>\n<\/section>\n
\n
<\/section>\n<\/section>\n<\/section>\n
\n
\u4e3a\u4ec0\u4e48\u9700\u8981IS-IS\uff1f<\/strong><\/p>\n<\/section>\n
\n
<\/section>\n<\/section>\n<\/section>\n<\/section>\n
 <\/p>\n

\u5728IS-IS\u51fa\u73b0\u524d\uff0c\u7f51\u7edc\u4e0a\u5e7f\u6cdb\u4f7f\u7528RIP\uff08Routing Information Protocol\uff09\u4f5c\u4e3a\u5185\u90e8\u7f51\u5173\u534f\u8bae\u3002\u7531\u4e8eRIP\u662f\u57fa\u4e8e\u8ddd\u79bb\u77e2\u91cf\u7b97\u6cd5\u7684\u8def\u7531\u534f\u8bae\uff0c\u5b58\u5728\u7740\u6536\u655b\u6162\u3001\u8def\u7531\u73af\u8def\u3001\u53ef\u6269\u5c55\u6027\u5dee\u7b49\u95ee\u9898\uff0c\u6240\u4ee5\u9010\u6e10\u88abIS-IS\u53d6\u4ee3\u3002IS-IS\u5b58\u5728\u5982\u4e0b\u4f18\u52bf\uff1a<\/p>\n

 <\/p>\n

    \n
  • IS-IS\u62a5\u6587\u4e2d\u91c7\u7528TLV\u683c\u5f0f\uff0c\u6269\u5c55\u6027\u5f88\u9ad8\uff1b<\/li>\n
  • \u4e00\u4e2a\u8def\u7531\u5668\u6700\u591a\u53ef\u914d\u7f6e\u591a\u4e2a\u533a\u57df\u5730\u5740\uff0c\u53ef\u4ee5\u5b9e\u73b0\u591a\u533a\u57df\u7684\u5e73\u6ed1\u5408\u5e76\uff1b<\/li>\n
  • \u62a5\u6587\u7ed3\u6784\u7b80\u5355\uff0c\u90bb\u5c45\u4ea4\u4e92\u6548\u7387\u9ad8\uff1b<\/li>\n
  • \u7531\u4e8eIS-IS\u5de5\u4f5c\u5728\u6570\u636e\u94fe\u8def\u5c42\uff0c\u56e0\u6b64\u4e0d\u4f9d\u8d56IP\u5730\u5740\uff1b<\/li>\n
  • \u91c7\u7528\u6700\u77ed\u8def\u5f84SPF\u7b97\u6cd5\uff0c\u6536\u655b\u901f\u5ea6\u5feb\u3002<\/li>\n
  • \u53ef\u5e94\u7528\u4e8e\u89c4\u6a21\u8f83\u5927\u7684\u7f51\u7edc\u4e2d\u3002\u5982\u5927\u578bISP\uff08Internet Service Provider\uff09\u4e2d\u3002<\/li>\n<\/ul>\n<\/section>\n
    \n
    \n
    \n
    02<\/strong><\/p>\n<\/section>\n<\/section>\n
    \n
    <\/section>\n<\/section>\n<\/section>\n
    \n
    IS-IS\u6709\u54ea\u4e9b\u57fa\u672c\u6982\u5ff5\uff1f<\/strong><\/p>\n<\/section>\n
    \n
    <\/section>\n<\/section>\n<\/section>\n<\/section>\n
     <\/p>\n

    2.1\u00a0 IS-IS\u8def\u7531\u5668\u5206\u7c7b<\/strong><\/span><\/p>\n

     <\/p>\n

    \u4e3a\u4e86\u652f\u6301\u5927\u89c4\u6a21\u7684\u8def\u7531\u7f51\u7edc\uff0cIS-IS\u5728\u8def\u7531\u57df\u5185\u91c7\u7528\u4e24\u7ea7\u7684\u5206\u5c42\u7ed3\u6784\uff0c\u5373\u4e00\u4e2a\u5927\u7684Domain\uff08\u57df\uff09\u53ef\u4ee5\u88ab\u5206\u4e3a\u591a\u4e2aAreas\uff08\u533a\u57df\uff09\u3002IS-IS\u7f51\u7edc\u4e2d\u4e09\u79cd\u4e0d\u540c\u7ea7\u522b\u7684\u8def\u7531\u8bbe\u5907\uff1a\u4e00\u822c\u6765\u8bf4\uff0c\u5c06Level-1\u8def\u7531\u8bbe\u5907\u90e8\u7f72\u5728\u533a\u57df\u5185\uff0cLevel-2\u8def\u7531\u8bbe\u5907\u90e8\u7f72\u5728\u533a\u57df\u95f4\uff0cLevel-1-2\u8def\u7531\u8bbe\u5907\u90e8\u7f72\u5728Level-1\u548cLevel-2\u8def\u7531\u8bbe\u5907\u7684\u4e2d\u95f4\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u4e00\u4e2a\u8fd0\u884cIS-IS\u534f\u8bae\u7684\u7f51\u7edc\uff0c\u6574\u4e2a\u9aa8\u5e72\u533a\u57df\uff08backbone\uff09\u4e0d\u4ec5\u5305\u62ecArea1\u4e2d\u7684\u6240\u6709Level-2\u8def\u7531\u8bbe\u5907\uff0c\u8fd8\u5305\u62ec\u5176\u4ed6\u533a\u57df\u7684Level-1-2\u8def\u7531\u8bbe\u5907\u3002<\/p>\n<\/section>\n

    \n
    <\/div><\/section>\n<\/section>\n
     <\/p>\n

    Level-1\u8def\u7531\u5668<\/strong><\/span><\/p>\n

     <\/p>\n

    Level-1\u8def\u7531\u5668\u8d1f\u8d23\u533a\u57df\u5185\u7684\u8def\u7531\uff0c\u5b83\u53ea\u4e0e\u5c5e\u4e8e\u540c\u4e00\u533a\u57df\u7684Level-1\u548cLevel-1-2\u8def\u7531\u5668\u5f62\u6210\u90bb\u5c45\u5173\u7cfb\u3002\u4e00\u4e2aLevel-1\u8def\u7531\u5668\u53ea\u8d1f\u8d23\u7ef4\u62a4\u672c\u533a\u57df\u5185\u7684LSDB\uff08Link State Database\uff0c\u94fe\u8def\u72b6\u6001\u6570\u636e\u5e93\uff09\uff0c\u5bf9\u4e8e\u76ee\u7684\u5730\u4e0d\u5728\u672c\u533a\u57df\u5185\u7684\u8def\u7531\uff0cLevel-1\u8def\u7531\u5668\u4f1a\u5c06\u8be5\u8def\u7531\u7684\u76ee\u7684\u5730\u6807\u8bc6\u4e3a\u6700\u8fd1\u7684Level-1-2\u8def\u7531\u5668\u3002<\/p>\n

     <\/p>\n

    Level-2\u8def\u7531\u5668<\/strong><\/span><\/p>\n

     <\/p>\n

    Level-2\u8def\u7531\u5668\u8d1f\u8d23\u533a\u57df\u95f4\u7684\u8def\u7531\uff0c\u53ef\u4ee5\u4e0eLevel-2\u6216\u5176\u5b83\u533a\u57df\u7684Level-1-2\u8def\u7531\u5668\u5f62\u6210\u90bb\u5c45\u5173\u7cfb\uff0c\u7ef4\u62a4\u4e00\u4e2aLevel-2\u7684LSDB\uff0c\u8be5LSDB\u5305\u542b\u533a\u57df\u95f4\u7684\u8def\u7531\u4fe1\u606f\u3002<\/p>\n

     <\/p>\n

    \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\u8fde\u7eed\u7684\uff0c\u4ee5\u4fdd\u8bc1\u9aa8\u5e72\u7f51\u7684\u8fde\u7eed\u6027\u3002\u53ea\u6709Level-2\u7ea7\u522b\u7684\u8def\u7531\u5668\u624d\u80fd\u76f4\u63a5\u4e0e\u533a\u57df\u5916\u7684\u8def\u7531\u5668\u4ea4\u6362\u6570\u636e\u62a5\u6587\u6216\u8def\u7531\u4fe1\u606f\u3002<\/p>\n

     <\/p>\n

    Level-1-2\u8def\u7531\u5668<\/strong><\/span><\/p>\n

     <\/p>\n

    \u540c\u65f6\u5c5e\u4e8eLevel-1\u548cLevel-2\u7684\u8def\u7531\u5668\u79f0\u4e3aLevel-1-2\u8def\u7531\u5668\uff0c\u53ef\u4ee5\u4e0e\u540c\u4e00\u533a\u57df\u7684Level-1\u548cLevel-1-2\u8def\u7531\u5668\u5f62\u6210Level-1\u90bb\u5c45\u5173\u7cfb\uff0c\u4e5f\u53ef\u4ee5\u4e0e\u5176\u4ed6\u533a\u57df\u7684Level-2\u548cLevel-1-2\u8def\u7531\u5668\u5f62\u6210Level-2\u7684\u90bb\u5c45\u5173\u7cfb\u3002Level-1\u8def\u7531\u5668\u5fc5\u987b\u901a\u8fc7Level-1-2\u8def\u7531\u5668\u624d\u80fd\u8fde\u63a5\u81f3\u5176\u4ed6\u533a\u57df\u3002<\/p>\n

     <\/p>\n

    Level-1-2\u8def\u7531\u5668\u7ef4\u62a4\u4e24\u4e2aLSDB\uff0cLevel-1\u7684LSDB\u7528\u4e8e\u533a\u57df\u5185\u8def\u7531\uff0cLevel-2\u7684LSDB\u7528\u4e8e\u533a\u57df\u95f4\u8def\u7531\u3002<\/p>\n

     <\/p>\n

    2.2\u00a0 IS-IS\u7684\u7f51\u7edc\u7c7b\u578b\u4e0e\u7f51\u7edc\u94fe\u8def\u5173\u7cfb<\/strong><\/span><\/p>\n

     <\/p>\n

    IS-IS\u53ef\u4ee5\u8fd0\u884c\u5728\u5e7f\u64ad\u94fe\u8def\u548c\u70b9\u5230\u70b9\u94fe\u8def\u4e0a\uff0c\u5e7f\u64ad\u94fe\u8def\u5305\u62ecEthernet\u3001Token-Ring\u7b49\uff1b\u70b9\u5230\u70b9\u94fe\u8def\u5982PPP\u3002<\/p>\n

     <\/p>\n

    IS-IS\u5305\u62ec\u4e24\u79cd\u7f51\u7edc\u7c7b\u578b\uff1a\u5e7f\u64ad\u7f51\u7edc\u7c7b\u578b\u548cP2P\u7f51\u7edc\u7c7b\u578b\uff08\u5982\u4e0b\u56fe\u6240\u793a\uff09\u3002\u5e7f\u64ad\u94fe\u8def\u53ef\u4ee5\u914d\u7f6e\u6210\u5e7f\u64ad\u7f51\u7edc\u7c7b\u578b\u4e5f\u53ef\u4ee5\u914d\u7f6e\u6210P2P\u7f51\u7edc\u7c7b\u578b\uff0c\u70b9\u5230\u70b9\u94fe\u8def\u4ec5\u652f\u6301P2P\u7f51\u7edc\u7c7b\u578b\u3002<\/p>\n<\/section>\n

    \n
    <\/div><\/section>\n<\/section>\n
    \n
    <\/section>\n<\/section>\n
    \n
    <\/div><\/section>\n<\/section>\n
     <\/p>\n

    2.3\u00a0\u00a0IS-IS\u7684\u62a5\u6587\u7c7b\u578b<\/strong><\/span><\/p>\n

     <\/p>\n

    IS-IS\u62a5\u6587\u6709\u4ee5\u4e0b\u51e0\u79cd\u7c7b\u578b\uff1aHello PDU\uff08Protocol Data Unit\uff09\u3001LSP\u548cSNP\u3002<\/p>\n

     <\/p>\n

    Hello PDU<\/strong><\/span><\/p>\n

     <\/p>\n

    Hello\u62a5\u6587\u7528\u4e8e\u5efa\u7acb\u548c\u7ef4\u6301\u90bb\u5c45\u5173\u7cfb\uff0c\u4e5f\u79f0\u4e3aIIH\uff08IS-to-IS Hello PDUs\uff09\u3002\u5176\u4e2d\uff0c\u5e7f\u64ad\u7f51\u4e2d\u7684Level-1 IS-IS\u4f7f\u7528Level-1 LAN IIH\uff1b\u5e7f\u64ad\u7f51\u4e2d\u7684Level-2 IS-IS\u4f7f\u7528Level-2 LAN IIH\uff1b\u975e\u5e7f\u64ad\u7f51\u7edc\u4e2d\u5219\u4f7f\u7528P2P IIH\u3002\u5b83\u4eec\u7684\u62a5\u6587\u683c\u5f0f\u6709\u6240\u4e0d\u540c\u3002P2P IIH\u4e2d\u76f8\u5bf9\u4e8eLAN IIH\u6765\u8bf4\uff0c\u591a\u4e86\u4e00\u4e2a\u8868\u793a\u672c\u5730\u94fe\u8defID\u7684Local Circuit ID\u5b57\u6bb5\uff0c\u7f3a\u5c11\u4e86\u8868\u793a\u5e7f\u64ad\u7f51\u4e2dDIS\u7684\u4f18\u5148\u7ea7\u7684Priority\u5b57\u6bb5\u4ee5\u53ca\u8868\u793aDIS\u548c\u4f2a\u8282\u70b9System ID\u7684LAN ID\u5b57\u6bb5\u3002<\/p>\n

     <\/p>\n

    \u5e7f\u64ad\u7f51Hello\uff1a<\/strong>\u5e7f\u64ad\u7f51\u4e2d\u7684Hello\u62a5\u6587\u683c\u5f0f\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<\/section>\n

    \n
    <\/div><\/section>\n<\/section>\n
    \u00a0<\/strong><\/p>\n

    P2P Hello\uff1a<\/strong>P2P\u7f51\u7edc\u4e2d\u7684Hello\u62a5\u6587\u683c\u5f0f\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<\/section>\n

    \n
    <\/div><\/section>\n<\/section>\n
    \u5728\u6240\u6709\u7684IS-IS PDU\u4e2d\uff0c\u524d\u516b\u4e2a\u5b57\u8282\u90fd\u662f\u516c\u7528\u7684\uff0cHello PDU\u5404\u4e2a\u4e3b\u8981\u5b57\u6bb5\u7684\u542b\u4e49\u53ca\u4f5c\u7528\u5982\u4e0b\uff1a<\/p>\n

     <\/p>\n

    Intradomain Routing Protocol Discriminator:<\/strong>\u57df\u5185\u8def\u7531\u9009\u62e9\u534f\u8bae\u9274\u522b\u7b26\uff0c\u7528\u6765\u6807\u8bc6\u7f51\u7edc\u5c42\u534f\u8bae\u6570\u636e\u5355\u5143\u3002\u5728IS-IS\u4e2d\uff0c\u8be5\u5b57\u6bb5\u7684\u503c\u56fa\u5b9a\u4e3a0x83\u3002<\/p>\n

     <\/p>\n

    Length Indicator:<\/strong>\u957f\u5ea6\u6807\u8bc6\u7b26\uff0c\u7528\u6765\u6807\u8bc6\u8be5\u56fa\u5b9a\u5934\u90e8\u7684\u957f\u5ea6\u3002<\/p>\n

     <\/p>\n

    ID Length\uff1a<\/strong>\u7528\u6765\u6807\u8bc6\u8be5\u8def\u7531\u9009\u62e9\u57df\u5185SystemID\u7684\u957f\u5ea6\u3002<\/p>\n

     <\/p>\n

    PDU Type\uff1a<\/strong>\u7528\u6765\u6807\u8bc6PDU\u7684\u7c7b\u578b\u3002<\/p>\n

     <\/p>\n

    Maximum Area Address\uff1a<\/strong>\u6700\u5927\u533a\u57df\u5730\u5740\u6570\uff0c\u8868\u793a\u8be5IS-IS\u533a\u57df\u6240\u5141\u8bb8\u7684\u6700\u5927\u533a\u57df\u5730\u5740\u6570\u91cf\u3002\u76ee\u524d\uff0c\u8be5\u5b57\u6bb5\u56fa\u5b9a\u4e3a0\uff0c\u8868\u793a\u6700\u591a\u652f\u63013\u4e2a\u533a\u57df\u5730\u5740\u3002<\/p>\n

     <\/p>\n

    TLV\uff1a<\/strong>\u5373Type\/Length\/Value\uff08\u7c7b\u578b\/\u957f\u5ea6\/\u503c\uff09\uff0c\u4e0d\u540cPDU\u7c7b\u578b\u6240\u5305\u542b\u7684TLV\u662f\u4e0d\u540c\u7684\u3002<\/p>\n

     <\/p>\n

    LSP<\/strong><\/span><\/p>\n

     <\/p>\n

    \u94fe\u8def\u72b6\u6001\u62a5\u6587LSP\uff08Link State PDUs\uff09\u7528\u4e8e\u4ea4\u6362\u94fe\u8def\u72b6\u6001\u4fe1\u606f\u3002LSP\u5206\u4e3a\u4e24\u79cd\uff1aLevel-1 LSP\u548cLevel-2 LSP\u3002Level-1 LSP\u7531Level-1 IS-IS\u4f20\u9001\uff0cLevel-2 LSP\u7531Level-2 IS-IS\u4f20\u9001\uff0cLevel-1-2 IS-IS\u5219\u53ef\u4f20\u9001\u4ee5\u4e0a\u4e24\u79cdLSP\u3002<\/p>\n

     <\/p>\n

    \u4e24\u7c7bLSP\u6709\u76f8\u540c\u7684\u62a5\u6587\u683c\u5f0f\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<\/section>\n

    \n
    <\/div><\/section>\n<\/section>\n
     <\/p>\n

    \u4e3b\u8981\u5b57\u6bb5\u7684\u89e3\u91ca\u5982\u4e0b\uff1a<\/p>\n

    <\/section>\n

    ATT\uff08Attached\uff09\uff1a<\/strong>\u533a\u57df\u5173\u8054\u4f4d\u3002<\/p>\n

     <\/p>\n

    \u7531Level-1-2\u8def\u7531\u5668\u4ea7\u751f\uff0c\u7528\u6765\u6307\u660e\u59cb\u53d1\u8def\u7531\u5668\u662f\u5426\u4e0e\u5176\u5b83\u533a\u57df\u76f8\u8fde\u3002\u5f53L1\u533a\u57df\u4e2d\u7684\u8def\u7531\u5668\u6536\u5230Level-1-2\u8def\u7531\u5668\u53d1\u9001\u7684ATT\u4f4d\u88ab\u7f6e\u4f4d\u7684L1 LSP\u540e\uff0c\u5b83\u5c06\u521b\u5efa\u4e00\u6761\u6307\u5411Level-1-2\u8def\u7531\u5668\u7684\u7f3a\u7701\u8def\u7531\uff0c\u4ee5\u4fbf\u6570\u636e\u53ef\u4ee5\u88ab\u8def\u7531\u5230\u5176\u4ed6\u533a\u57df\u3002<\/p>\n

     <\/p>\n

    \u867d\u7136ATT\u4f4d\u540c\u65f6\u5728L1 LSP\u548cL2 LSP\u4e2d\u8fdb\u884c\u4e86\u5b9a\u4e49\uff0c\u4f46\u662f\u5b83\u53ea\u4f1a\u5728L1 LSP\u4e2d\u88ab\u7f6e\u4f4d\uff0c\u5e76\u4e14\u53ea\u6709L1\/2\u8def\u7531\u5668\u4f1a\u8bbe\u7f6e\u8fd9\u4e2a\u5b57\u6bb5\u3002<\/p>\n

     <\/p>\n

    OL\uff08LSDB Overload\uff09\uff1a<\/strong>\u8fc7\u8f7d\u6807\u5fd7\u4f4d\u3002<\/p>\n

     <\/p>\n

    \u8bbe\u7f6e\u4e86\u8fc7\u8f7d\u6807\u5fd7\u4f4d\u7684LSP\u867d\u7136\u8fd8\u4f1a\u5728\u7f51\u7edc\u4e2d\u6269\u6563\uff0c\u4f46\u662f\u5728\u8ba1\u7b97\u901a\u8fc7\u8fc7\u8f7d\u8def\u7531\u5668\u7684\u8def\u7531\u65f6\u4e0d\u4f1a\u88ab\u91c7\u7528\u3002\u5373\u5bf9\u8def\u7531\u5668\u8bbe\u7f6e\u8fc7\u8f7d\u4f4d\u540e\uff0c\u5176\u5b83\u8def\u7531\u5668\u5728\u8fdb\u884cSPF\u8ba1\u7b97\u65f6\u4e0d\u4f1a\u4f7f\u7528\u8fd9\u53f0\u8def\u7531\u5668\u505a\u8f6c\u53d1\uff0c\u53ea\u8ba1\u7b97\u8be5\u8282\u70b9\u4e0a\u7684\u76f4\u8fde\u8def\u7531\u3002<\/p>\n

     <\/p>\n

    IS Type\uff1a<\/strong>\u751f\u6210LSP\u7684IS-IS\u7c7b\u578b\u3002<\/p>\n

     <\/p>\n

    \u7528\u6765\u6307\u660e\u662fLevel-1\u8fd8\u662fLevel-2 IS-IS\uff0801\u8868\u793aLevel-1\uff0c11\u8868\u793aLevel-2\uff09\u3002<\/p>\n

     <\/p>\n

    SNP<\/strong><\/span><\/p>\n

    \u00a0<\/strong><\/span><\/p>\n

    \u5e8f\u5217\u53f7\u62a5\u6587SNP\uff08Sequence Number PDUs\uff09\u901a\u8fc7\u63cf\u8ff0\u5168\u90e8\u6216\u90e8\u5206LSP\u7684\u6458\u8981\u4fe1\u606f\u6765\u540c\u6b65\u5404LSDB\uff08Link-State DataBase\uff09\uff0c\u5b83\u5305\u62ecCSNP\uff08Complete Sequence Number Protocol Data Unit\uff0c\u5168\u5e8f\u5217\u53f7\u534f\u8bae\u6570\u636e\u5355\u5143\uff09\u548cPSNP\uff08Partial Sequence Number Protocol Data Unit\uff0c\u90e8\u5206\u5e8f\u5217\u53f7\u534f\u8bae\u6570\u636e\u5355\u5143\uff09\u3002CSNP\u5305\u62ecLSDB\u4e2d\u6240\u6709LSP\u7684\u6458\u8981\u4fe1\u606f\uff0c\u4ece\u800c\u53ef\u4ee5\u5728\u76f8\u90bb\u8def\u7531\u8bbe\u5907\u95f4\u4fdd\u6301LSDB\u7684\u540c\u6b65\u3002<\/p>\n

     <\/p>\n

    \u5728\u5e7f\u64ad\u7f51\u94fe\u8def\u548c\u70b9\u5230\u70b9\u94fe\u8def\u4e2d\uff0cSNP\u8fd0\u884c\u673a\u5236\u7565\u6709\u4e0d\u540c\uff1a<\/p>\n

     <\/p>\n

    \u5728\u5e7f\u64ad\u7f51\u94fe\u8def\u4e0a\uff0cCSNP\u7531DIS\u8bbe\u5907\u5468\u671f\u6027\u7684\u53d1\u9001\u3002\u5f53\u90bb\u5c45\u53d1\u73b0LSDB\u4e0d\u540c\u6b65\u65f6\uff0c\u53d1\u9001PSNP\u62a5\u6587\u6765\u8bf7\u6c42\u7f3a\u5931\u7684LSP\u62a5\u6587\u3002<\/p>\n

     <\/p>\n

    \u5728\u70b9\u5230\u70b9\u94fe\u8def\u4e0a\uff0cCSNP\u53ea\u5728\u7b2c\u4e00\u6b21\u5efa\u7acb\u90bb\u5c45\u5173\u7cfb\u65f6\u53d1\u9001\uff0c\u90bb\u5c45\u53d1\u9001PSNP\u62a5\u6587\u6765\u505a\u5e94\u7b54\u3002\u5f53\u90bb\u5c45\u53d1\u73b0LSDB\u4e0d\u540c\u6b65\u65f6\uff0c\u540c\u6837\u53d1\u9001PSNP\u62a5\u6587\u6765\u8bf7\u6c42\u7f3a\u5931\u7684LSP\u62a5\u6587\u3002<\/p>\n

     <\/p>\n<\/section>\n

    \n
    \n
    \n
    03<\/strong><\/p>\n<\/section>\n<\/section>\n
    \n
    <\/section>\n<\/section>\n<\/section>\n
    \n
    IS-IS\u90bb\u5c45\u5173\u7cfb\u662f\u5982\u4f55\u5efa\u7acb\u7684\uff1f<\/strong><\/p>\n<\/section>\n
    \n
    <\/section>\n<\/section>\n<\/section>\n<\/section>\n
     <\/p>\n

    3.1\u00a0 \u90bb\u5c45\u5173\u7cfb\u5efa\u7acb<\/strong><\/span><\/p>\n

     <\/p>\n

    \u4e24\u53f0\u8fd0\u884cIS-IS\u7684\u8def\u7531\u8bbe\u5907\u5728\u4ea4\u4e92\u534f\u8bae\u62a5\u6587\u5b9e\u73b0\u8def\u7531\u529f\u80fd\u4e4b\u524d\u5fc5\u987b\u9996\u5148\u5efa\u7acb\u90bb\u5c45\u5173\u7cfb\u3002\u5728\u4e0d\u540c\u7c7b\u578b\u7684\u7f51\u7edc\u4e0a\uff0cIS-IS\u7684\u90bb\u5c45\u5efa\u7acb\u65b9\u5f0f\u5e76\u4e0d\u76f8\u540c\u3002<\/p>\n

     <\/p>\n

    \u5e7f\u64ad\u94fe\u8def\u90bb\u5c45\u5173\u7cfb\u7684\u5efa\u7acb<\/strong><\/span><\/p>\n

     <\/p>\n

    \u5982\u4e0b\u56fe\u6240\u793a\u4ee5Level-2\u8def\u7531\u8bbe\u5907\u4e3a\u4f8b\uff0c\u63cf\u8ff0\u4e86\u5e7f\u64ad\u94fe\u8def\u4e2d\u5efa\u7acb\u90bb\u5c45\u5173\u7cfb\u7684\u8fc7\u7a0b\u3002Level-1\u8def\u7531\u8bbe\u5907\u4e4b\u95f4\u5efa\u7acb\u90bb\u5c45\u4e0e\u6b64\u76f8\u540c\u3002<\/p>\n<\/section>\n

    \n
    <\/div><\/section>\n<\/section>\n
     <\/p>\n

    DeviceA\u5e7f\u64ad\u53d1\u9001Level-2 LAN IIH\uff0c\u6b64\u62a5\u6587\u4e2d\u65e0\u90bb\u5c45\u6807\u8bc6\u3002<\/p>\n

     <\/p>\n

    DeviceB\u6536\u5230\u6b64\u62a5\u6587\u540e\uff0c\u5c06\u81ea\u5df1\u548cDeviceA\u7684\u90bb\u5c45\u72b6\u6001\u6807\u8bc6\u4e3aInitial\u3002\u7136\u540e\uff0cDeviceB\u518d\u5411DeviceA\u56de\u590dLevel-2 LAN IIH\uff0c\u6b64\u62a5\u6587\u4e2d\u6807\u8bc6DeviceA\u4e3aDeviceB\u7684\u90bb\u5c45\u3002<\/p>\n

     <\/p>\n

    DeviceA\u6536\u5230\u6b64\u62a5\u6587\u540e\uff0c\u5c06\u81ea\u5df1\u4e0eDeviceB\u7684\u90bb\u5c45\u72b6\u6001\u6807\u8bc6\u4e3aUp\u3002\u7136\u540eDeviceA\u518d\u5411DeviceB\u53d1\u9001\u4e00\u4e2a\u6807\u8bc6DeviceB\u4e3aDeviceA\u90bb\u5c45\u7684Level-2 LAN IIH\u3002<\/p>\n

     <\/p>\n

    DeviceB\u6536\u5230\u6b64\u62a5\u6587\u540e\uff0c\u5c06\u81ea\u5df1\u4e0eDeviceA\u7684\u90bb\u5c45\u72b6\u6001\u6807\u8bc6\u4e3aUp\u3002\u8fd9\u6837\uff0c\u4e24\u4e2a\u8def\u7531\u8bbe\u5907\u6210\u529f\u5efa\u7acb\u4e86\u90bb\u5c45\u5173\u7cfb\u3002<\/p>\n

    <\/section>\n

    \u56e0\u4e3a\u662f\u5e7f\u64ad\u7f51\u7edc\uff0c\u9700\u8981\u9009\u4e3eDIS\uff0c\u6240\u4ee5\u5728\u90bb\u5c45\u5173\u7cfb\u5efa\u7acb\u540e\uff0c\u8def\u7531\u8bbe\u5907\u4f1a\u7b49\u5f85\u4e24\u4e2aHello\u62a5\u6587\u95f4\u9694\uff0c\u518d\u8fdb\u884cDIS\u7684\u9009\u4e3e\u3002Hello\u62a5\u6587\u4e2d\u5305\u542bPriority\u5b57\u6bb5\uff0cPriority\u503c\u6700\u5927\u7684\u5c06\u88ab\u9009\u4e3e\u4e3a\u8be5\u5e7f\u64ad\u7f51\u7684DIS\u3002\u82e5\u4f18\u5148\u7ea7\u76f8\u540c\uff0c\u63a5\u53e3MAC\u5730\u5740\u8f83\u5927\u7684\u88ab\u9009\u4e3e\u4e3aDIS\u3002<\/p>\n

     <\/p>\n

    P2P\u94fe\u8def\u90bb\u5c45\u5173\u7cfb\u7684\u5efa\u7acb<\/strong><\/span><\/p>\n

     <\/p>\n

    \u5728P2P\u94fe\u8def\u4e0a\uff0c\u90bb\u5c45\u5173\u7cfb\u7684\u5efa\u7acb\u4e0d\u540c\u4e8e\u5e7f\u64ad\u94fe\u8def\u3002\u5206\u4e3a\u4e24\u6b21\u63e1\u624b\u673a\u5236\u548c\u4e09\u6b21\u63e1\u624b\u673a\u5236\u3002<\/p>\n

     <\/p>\n

    \u4e24\u6b21\u63e1\u624b\u673a\u5236\uff1a<\/strong>\u53ea\u8981\u8def\u7531\u8bbe\u5907\u6536\u5230\u5bf9\u7aef\u53d1\u6765\u7684Hello\u62a5\u6587\uff0c\u5c31\u5355\u65b9\u9762\u5ba3\u5e03\u90bb\u5c45\u4e3aUp\u72b6\u6001\uff0c\u5efa\u7acb\u90bb\u5c45\u5173\u7cfb\u3002<\/p>\n

     <\/p>\n

    \u4e09\u6b21\u63e1\u624b\u673a\u5236\uff1a<\/strong>\u6b64\u65b9\u5f0f\u901a\u8fc7\u4e09\u6b21\u53d1\u9001P2P\u7684IS-IS Hello PDU\u6700\u7ec8\u5efa\u7acb\u8d77\u90bb\u5c45\u5173\u7cfb\uff0c\u7c7b\u4f3c\u5e7f\u64ad\u90bb\u5c45\u5173\u7cfb\u7684\u5efa\u7acb\u3002<\/p>\n

     <\/p>\n

    \u4e24\u6b21\u63e1\u624b\u673a\u5236\u5b58\u5728\u660e\u663e\u7684\u7f3a\u9677\u3002\u5f53\u8def\u7531\u8bbe\u5907\u95f4\u5b58\u5728\u4e24\u6761\u53ca\u4ee5\u4e0a\u7684\u94fe\u8def\u65f6\uff0c\u5982\u679c\u67d0\u6761\u94fe\u8def\u4e0a\u5230\u8fbe\u5bf9\u7aef\u7684\u5355\u5411\u72b6\u6001\u4e3aDown\uff0c\u800c\u53e6\u4e00\u6761\u94fe\u8def\u540c\u65b9\u5411\u7684\u72b6\u6001\u4e3aUp\uff0c\u8def\u7531\u8bbe\u5907\u4e4b\u95f4\u8fd8\u662f\u80fd\u5efa\u7acb\u8d77\u90bb\u5c45\u5173\u7cfb\u3002SPF\u5728\u8ba1\u7b97\u65f6\u4f1a\u4f7f\u7528\u72b6\u6001\u4e3aUP\u7684\u94fe\u8def\u4e0a\u7684\u53c2\u6570\uff0c\u8fd9\u5c31\u5bfc\u81f4\u6ca1\u6709\u68c0\u6d4b\u5230\u6545\u969c\u7684\u8def\u7531\u8bbe\u5907\u5728\u8f6c\u53d1\u62a5\u6587\u65f6\u4ecd\u7136\u8bd5\u56fe\u901a\u8fc7\u72b6\u6001\u4e3aDown\u7684\u94fe\u8def\u3002\u4e09\u6b21\u63e1\u624b\u673a\u5236\u89e3\u51b3\u4e86\u4e0a\u8ff0\u4e0d\u53ef\u9760\u70b9\u5230\u70b9\u94fe\u8def\u4e2d\u5b58\u5728\u7684\u95ee\u9898\u3002\u8fd9\u79cd\u65b9\u5f0f\u4e0b\uff0c\u8def\u7531\u8bbe\u5907\u53ea\u6709\u5728\u77e5\u9053\u90bb\u5c45\u8def\u7531\u8bbe\u5907\u4e5f\u63a5\u6536\u5230\u5b83\u7684\u62a5\u6587\u65f6\uff0c\u624d\u5ba3\u5e03\u90bb\u5c45\u8def\u7531\u8bbe\u5907\u5904\u4e8eUp\u72b6\u6001\uff0c\u4ece\u800c\u5efa\u7acb\u90bb\u5c45\u5173\u7cfb\u3002<\/p>\n

     <\/p>\n<\/section>\n

    \n
    \n
    \n
    04<\/strong><\/p>\n<\/section>\n<\/section>\n
    \n
    <\/section>\n<\/section>\n<\/section>\n
    \n
    LSDB\u662f\u5982\u4f55\u540c\u6b65\u7684\uff1f<\/strong><\/p>\n<\/section>\n
    \n
    <\/section>\n<\/section>\n<\/section>\n<\/section>\n
     <\/p>\n

    4.1\u00a0 LSP\u4ea7\u751f\u7684\u539f\u56e0<\/strong><\/span><\/p>\n

     <\/p>\n

    IS-IS\u8def\u7531\u57df\u5185\u7684\u6240\u6709\u8def\u7531\u8bbe\u5907\u90fd\u4f1a\u4ea7\u751fLSP\uff0c\u4ee5\u4e0b\u4e8b\u4ef6\u4f1a\u89e6\u53d1\u4e00\u4e2a\u65b0\u7684LSP\uff1a<\/p>\n

     <\/p>\n

      \n
    • \u90bb\u5c45Up\u6216Down<\/li>\n
    • IS-IS\u76f8\u5173\u63a5\u53e3Up\u6216Down<\/li>\n
    • \u5f15\u5165\u7684IP\u8def\u7531\u53d1\u751f\u53d8\u5316<\/li>\n
    • \u533a\u57df\u95f4\u7684IP\u8def\u7531\u53d1\u751f\u53d8\u5316<\/li>\n
    • \u63a5\u53e3\u88ab\u8d4b\u4e86\u65b0\u7684Cost\u503c<\/li>\n
    • \u5468\u671f\u6027\u66f4\u65b0<\/li>\n<\/ul>\n

       <\/p>\n

      4.2\u00a0 \u6536\u5230\u90bb\u5c45\u65b0\u7684LSP\u7684\u5904\u7406\u8fc7\u7a0b<\/strong><\/span><\/p>\n

       <\/p>\n

        \n
      • \u5c06\u63a5\u6536\u7684\u65b0\u7684LSP\u5408\u5165\u5230\u81ea\u5df1\u7684LSDB\u6570\u636e\u5e93\u4e2d\uff0c\u5e76\u6807\u8bb0\u6cdb\u6d2a\u6807\u8bb0\u3002<\/li>\n
      • \u672c\u7aef\u8bbe\u5907\u6cdb\u6d2a\u65b0\u7684LSP\u5230\u9664\u4e86\u6536\u5230\u8be5LSP\u7684\u63a5\u53e3\u4e4b\u5916\u7684\u63a5\u53e3\u3002<\/li>\n
      • \u90bb\u5c45\u518d\u6269\u6563\u5230\u5176\u4ed6\u90bb\u5c45\u3002<\/li>\n<\/ul>\n

         <\/p>\n

        4.3\u00a0 LSP\u7684\u6cdb\u6d2a<\/strong><\/span><\/p>\n

         <\/p>\n

        LSP\u62a5\u6587\u7684\u6cdb\u6d2a\uff08flooding\uff09\u662f\u6307\u5f53\u4e00\u4e2a\u8def\u7531\u8bbe\u5907\u5411\u76f8\u90bb\u8def\u7531\u8bbe\u5907\u901a\u544a\u81ea\u5df1\u7684LSP\u540e\uff0c\u76f8\u90bb\u8def\u7531\u8bbe\u5907\u518d\u5c06\u540c\u6837\u7684LSP\u62a5\u6587\u4f20\u9001\u5230\u9664\u53d1\u9001\u8be5LSP\u7684\u8def\u7531\u8bbe\u5907\u5916\u7684\u5176\u4ed6\u90bb\u5c45\uff0c\u5e76\u8fd9\u6837\u9010\u7ea7\u5c06LSP\u4f20\u9001\u5230\u6574\u4e2a\u5c42\u6b21\u5185\u6240\u6709\u8def\u7531\u8bbe\u5907\u7684\u4e00\u79cd\u65b9\u5f0f\u3002\u901a\u8fc7\u8fd9\u79cd\u201c\u6cdb\u6d2a\u201d\uff0c\u6574\u4e2a\u5c42\u6b21\u5185\u7684\u6bcf\u4e00\u4e2a\u8def\u7531\u8bbe\u5907\u5c31\u90fd\u53ef\u4ee5\u62e5\u6709\u76f8\u540c\u7684LSP\u4fe1\u606f\uff0c\u5e76\u4fdd\u6301LSDB\u7684\u540c\u6b65\u3002<\/p>\n

         <\/p>\n

        \u6bcf\u4e00\u4e2aLSP\u90fd\u62e5\u6709\u4e00\u4e2a\u6807\u8bc6\u81ea\u5df1\u76844\u5b57\u8282\u7684\u5e8f\u5217\u53f7\u3002\u5728\u8def\u7531\u8bbe\u5907\u542f\u52a8\u65f6\u6240\u53d1\u9001\u7684\u7b2c\u4e00\u4e2aLSP\u62a5\u6587\u4e2d\u7684\u5e8f\u5217\u53f7\u4e3a1\uff0c\u4ee5\u540e\u5f53\u9700\u8981\u751f\u6210\u65b0\u7684LSP\u65f6\uff0c\u65b0LSP\u7684\u5e8f\u5217\u53f7\u5728\u524d\u4e00\u4e2aLSP\u5e8f\u5217\u53f7\u7684\u57fa\u7840\u4e0a\u52a01\u3002\u66f4\u9ad8\u7684\u5e8f\u5217\u53f7\u610f\u5473\u7740\u66f4\u65b0\u7684LSP\u3002<\/p>\n

         <\/p>\n

        4.4\u00a0 \u5e7f\u64ad\u94fe\u8def\u4e0aLSDB\u540c\u6b65<\/strong><\/span><\/p>\n

         <\/p>\n

        DIS\u548c\u4f2a\u8282\u70b9<\/strong><\/span><\/p>\n

         <\/p>\n

        \u5728\u5e7f\u64ad\u7f51\u7edc\u4e2d\uff0cIS-IS\u9700\u8981\u5728\u6240\u6709\u7684\u8def\u7531\u8bbe\u5907\u4e2d\u9009\u4e3e\u4e00\u4e2a\u8def\u7531\u8bbe\u5907\u4f5c\u4e3aDIS\uff08Designated Intermediate System\uff09\u3002DIS\u7528\u6765\u521b\u5efa\u548c\u66f4\u65b0\u4f2a\u8282\u70b9\uff08Pseudo node\uff09\uff0c\u5e76\u8d1f\u8d23\u751f\u6210\u4f2a\u8282\u70b9\u7684\u94fe\u8def\u72b6\u6001\u534f\u8bae\u6570\u636e\u5355\u5143LSP\uff08Link state Protocol Data Unit\uff09\uff0c\u7528\u6765\u63cf\u8ff0\u8fd9\u4e2a\u7f51\u7edc\u4e0a\u6709\u54ea\u4e9b\u7f51\u7edc\u8bbe\u5907\u3002<\/p>\n

        <\/section>\n

        \u4f2a\u8282\u70b9\u662f\u7528\u6765\u6a21\u62df\u5e7f\u64ad\u7f51\u7edc\u7684\u4e00\u4e2a\u865a\u62df\u8282\u70b9\uff0c\u5e76\u975e\u771f\u5b9e\u7684\u8def\u7531\u8bbe\u5907\u3002\u5728IS-IS\u4e2d\uff0c\u4f2a\u8282\u70b9\u7528DIS\u7684System ID\u548c\u4e00\u4e2a\u5b57\u8282\u7684Circuit ID\uff08\u975e0\u503c\uff09\u6807\u8bc6\u3002<\/p>\n

         <\/p>\n

        \u5982\u4e0b\u56fe\u6240\u793a\uff0c\u4f7f\u7528\u4f2a\u8282\u70b9\u53ef\u4ee5\u7b80\u5316\u7f51\u7edc\u62d3\u6251\uff0c\u4f7f\u8def\u7531\u8bbe\u5907\u4ea7\u751f\u7684LSP\u957f\u5ea6\u8f83\u5c0f\u3002\u53e6\u5916\uff0c\u5f53\u7f51\u7edc\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u9700\u8981\u4ea7\u751f\u7684LSP\u6570\u91cf\u4e5f\u4f1a\u8f83\u5c11\uff0c\u51cf\u5c11SPF\u7684\u8d44\u6e90\u6d88\u8017\u3002<\/p>\n<\/section>\n

        \n
        <\/div><\/section>\n<\/section>\n
        \u00a0<\/strong><\/span><\/p>\n

        \u5e7f\u64ad\u94fe\u8def\u4e2d\u65b0\u52a0\u5165\u8def\u7531\u8bbe\u5907\u4e0eDIS\u540c\u6b65LSDB\u6570\u636e\u5e93\u7684\u8fc7\u7a0b<\/strong><\/span><\/p>\n

         <\/p>\n

        \u5982\u4e0b\u56fe\u6240\u793a\uff0c\u65b0\u52a0\u5165\u7684\u8def\u7531\u8bbe\u5907DeviceC\u9996\u5148\u53d1\u9001Hello\u62a5\u6587\uff0c\u4e0e\u8be5\u5e7f\u64ad\u57df\u4e2d\u7684\u8def\u7531\u8bbe\u5907DeviceA\u548cDeviceB\u5efa\u7acb\u90bb\u5c45\u5173\u7cfb\uff0c\u90bb\u5c45\u5173\u7cfb\u5efa\u7acb\u4e4b\u540e\uff0cDeviceC\u7b49\u5f85LSP\u5237\u65b0\u5b9a\u65f6\u5668\u8d85\u65f6\uff0c\u7136\u540e\u5c06\u81ea\u5df1\u7684LSP\u53d1\u5f80\u90bb\u5c45\u8bbe\u5907\uff0c\u8fd9\u6837\u7f51\u7edc\u4e0a\u6240\u6709\u7684\u90bb\u5c45\u90fd\u5c06\u6536\u5230\u8be5LSP\u3002<\/p>\n

         <\/p>\n

        \u8be5\u7f51\u6bb5\u4e2d\u7684DIS\u4f1a\u628a\u6536\u5230DeviceC\u7684LSP\u52a0\u5165\u5230LSDB\u4e2d\uff0c\u7b49\u5f85CSNP\u62a5\u6587\u5b9a\u65f6\u5668\u8d85\u65f6\uff0c\u7136\u540e\u53d1\u9001CSNP\u62a5\u6587\uff0c\u8fdb\u884c\u8be5\u7f51\u7edc\u5185\u7684LSDB\u540c\u6b65\u3002<\/p>\n

         <\/p>\n

        DeviceC\u6536\u5230DIS\u53d1\u6765\u7684CSNP\u62a5\u6587\uff0c\u5bf9\u6bd4\u81ea\u5df1\u7684LSDB\u6570\u636e\u5e93\uff0c\u7136\u540e\u5411DIS\u53d1\u9001PSNP\u62a5\u6587\u8bf7\u6c42\u81ea\u5df1\u6ca1\u6709\u7684LSP\u3002<\/p>\n

         <\/p>\n

        DIS\u6536\u5230\u8be5PSNP\u62a5\u6587\u8bf7\u6c42\u540e\u5411DeviceC\u53d1\u9001\u5bf9\u5e94\u7684LSP\u8fdb\u884cLSDB\u7684\u540c\u6b65\u3002<\/p>\n<\/section>\n

        \n
        <\/div><\/section>\n<\/section>\n
         <\/p>\n

        \u5728\u4e0a\u8ff0\u8fc7\u7a0b\u4e2dDIS\u7684LSDB\u66f4\u65b0\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n

         <\/p>\n

        DIS\u63a5\u6536\u5230LSP\uff0c\u5728\u6570\u636e\u5e93\u4e2d\u641c\u7d22\u5bf9\u5e94\u7684\u8bb0\u5f55\u3002\u82e5\u6ca1\u6709\u8be5LSP\uff0c\u5219\u5c06\u5176\u52a0\u5165\u6570\u636e\u5e93\uff0c\u5e76\u5e7f\u64ad\u65b0\u6570\u636e\u5e93\u5185\u5bb9\u3002<\/p>\n

         <\/p>\n

        \u82e5\u6536\u5230\u7684LSP\u5e8f\u5217\u53f7\u5927\u4e8e\u672c\u5730LSP\u7684\u5e8f\u5217\u53f7\uff0c\u5c31\u66ff\u6362\u4e3a\u65b0\u62a5\u6587\uff0c\u5e76\u5e7f\u64ad\u65b0\u6570\u636e\u5e93\u5185\u5bb9\uff1b\u82e5\u6536\u5230\u7684LSP\u5e8f\u5217\u53f7\u5c0f\u672c\u5730LSP\u7684\u5e8f\u5217\u53f7\uff0c\u5c31\u5411\u5165\u7aef\u63a5\u53e3\u53d1\u9001\u672c\u5730LSP\u62a5\u6587\u3002<\/p>\n

         <\/p>\n

        \u82e5\u4e24\u4e2a\u5e8f\u5217\u53f7\u76f8\u7b49\uff0c\u5219\u6bd4\u8f83Remaining Lifetime\u3002\u82e5\u6536\u5230\u7684LSP\u7684Remaining Lifetime\u5c0f\u4e8e\u672c\u5730LSP\u7684Remaining Lifetime\uff0c\u5c31\u66ff\u6362\u4e3a\u65b0\u62a5\u6587\uff0c\u5e76\u5e7f\u64ad\u65b0\u6570\u636e\u5e93\u5185\u5bb9\uff1b\u82e5\u6536\u5230\u7684LSP\u7684Remaining Lifetime\u5927\u4e8e\u672c\u5730LSP\u7684Remaining Lifetime\uff0c\u5c31\u5411\u5165\u7aef\u63a5\u53e3\u53d1\u9001\u672c\u5730LSP\u62a5\u6587\u3002<\/p>\n

         <\/p>\n

        \u82e5\u4e24\u4e2a\u5e8f\u5217\u53f7\u548cRemaining Lifetime\u90fd\u76f8\u7b49\uff0c\u5219\u6bd4\u8f83Checksum\u3002\u82e5\u6536\u5230\u7684LSP\u7684Checksum\u5927\u4e8e\u672c\u5730LSP\u7684Checksum\uff0c\u5c31\u66ff\u6362\u4e3a\u65b0\u62a5\u6587\uff0c\u5e76\u5e7f\u64ad\u65b0\u6570\u636e\u5e93\u5185\u5bb9\uff1b\u82e5\u6536\u5230\u7684LSP\u7684Checksum\u5c0f\u4e8e\u672c\u5730LSP\u7684Checksum\uff0c\u5c31\u5411\u5165\u7aef\u63a5\u53e3\u53d1\u9001\u672c\u5730LSP\u62a5\u6587\u3002<\/p>\n

         <\/p>\n

        \u82e5\u4e24\u4e2a\u5e8f\u5217\u53f7\u3001Remaining Lifetime\u548cChecksum\u90fd\u76f8\u7b49\uff0c\u5219\u4e0d\u8f6c\u53d1\u8be5\u62a5\u6587\u3002<\/p>\n

         <\/p>\n

        \u9009\u4e3eDIS<\/strong><\/span><\/p>\n

         <\/p>\n

        \u5728\u5e7f\u64ad\u7f51\u4e2d\uff0c\u4efb\u610f\u4e24\u53f0\u8def\u7531\u5668\u4e4b\u95f4\u90fd\u8981\u4f20\u9012\u4fe1\u606f\u3002\u5982\u679c\u7f51\u7edc\u4e2d\u6709n\u53f0\u8def\u7531\u5668\uff0c\u5219\u9700\u8981\u5efa\u7acbn*(n-1)\/2\u4e2a\u90bb\u63a5\u5173\u7cfb\u3002\u8fd9\u4f7f\u5f97\u4efb\u4f55\u4e00\u53f0\u8def\u7531\u5668\u7684\u72b6\u6001\u53d8\u5316\u90fd\u4f1a\u5bfc\u81f4\u591a\u6b21\u4f20\u9012\uff0c\u6d6a\u8d39\u4e86\u5e26\u5bbd\u8d44\u6e90\u3002\u4e3a\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\uff0cIS-IS\u534f\u8bae\u5b9a\u4e49\u4e86DIS\uff0c\u6240\u6709\u8def\u7531\u5668\u90fd\u53ea\u5c06\u4fe1\u606f\u53d1\u9001\u7ed9DIS\uff0c\u7531DIS\u5c06\u7f51\u7edc\u94fe\u8def\u72b6\u6001\u5e7f\u64ad\u51fa\u53bb\u3002\u4f7f\u7528DIS\u548c\u4f2a\u8282\u70b9\u53ef\u4ee5\u7b80\u5316\u7f51\u7edc\u62d3\u6251\uff0c\u4f7f\u8def\u7531\u5668\u4ea7\u751f\u7684LSP\u62a5\u6587\u957f\u5ea6\u8f83\u5c0f\u3002\u53e6\u5916\uff0c\u5f53\u7f51\u7edc\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u9700\u8981\u4ea7\u751f\u7684LSP\u6570\u91cf\u4e5f\u4f1a\u8f83\u5c11\uff0c\u51cf\u5c11SPF\u7684\u8d44\u6e90\u6d88\u8017\u3002<\/p>\n

         <\/p>\n

        DIS\u9009\u4e3e\u53d1\u751f\u5728\u90bb\u5c45\u5173\u7cfb\u5efa\u7acb\u540e\uff0cLevel-1\u548cLevel-2\u533a\u57df\u7684DIS\u662f\u5206\u522b\u9009\u4e3e\u7684\uff0c\u7528\u6237\u53ef\u4ee5\u4e3a\u4e0d\u540c\u7ea7\u522b\u7684DIS\u9009\u4e3e\u8bbe\u7f6e\u4e0d\u540c\u7684\u4f18\u5148\u7ea7\u3002IS-IS\u534f\u8bae\u9009\u4e3eDIS\u7684\u8fc7\u7a0b\u662f\u6bcf\u4e00\u53f0\u8def\u7531\u5668\u63a5\u53e3\u90fd\u88ab\u6307\u5b9a\u4e00\u4e2aL1\u7c7b\u578b\u7684\u4f18\u5148\u7ea7\u548cL2\u7c7b\u578b\u7684\u4f18\u5148\u7ea7\uff0c\u8def\u7531\u5668\u901a\u8fc7\u5176\u6bcf\u4e00\u4e2a\u63a5\u53e3\u53d1\u9001Hello\u6570\u636e\u5305\uff0c\u5e76\u5728Hello\u6570\u636e\u5305\u4e2d\u901a\u544a\u5b83\u7684\u4f18\u5148\u7ea7\u3002DIS\u4f18\u5148\u7ea7\u6570\u503c\u6700\u5927\u7684\u88ab\u9009\u4e3aDIS\u3002\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\u4f1a\u88ab\u9009\u4e2d\u3002\u4e0d\u540c\u7ea7\u522b\u7684DIS\u53ef\u4ee5\u662f\u540c\u4e00\u53f0\u8def\u7531\u5668\uff0c\u4e5f\u53ef\u4ee5\u662f\u4e0d\u540c\u7684\u8def\u7531\u5668\u3002<\/p>\n

         <\/p>\n

        \u5728\u9009\u4e3eDIS\u8fc7\u7a0b\u4e2d\uff0cIS-IS\u534f\u8bae\u4e0eOSPF\u534f\u8bae\u7684\u4e0d\u540c\u70b9\u662f\uff1a<\/p>\n

         <\/p>\n

          \n
        • \u4f18\u5148\u7ea7\u4e3a0\u7684\u8def\u7531\u5668\u4e5f\u53c2\u4e0eDIS\u7684\u9009\u4e3e\uff1b<\/li>\n
        • \u5f53\u6709\u65b0\u7684\u8def\u7531\u5668\u52a0\u5165\uff0c\u5e76\u7b26\u5408\u6210\u4e3aDIS\u7684\u6761\u4ef6\u65f6\uff0c\u8fd9\u4e2a\u8def\u7531\u5668\u4f1a\u88ab\u9009\u4e2d\u6210\u4e3a\u65b0\u7684DIS\uff0c\u6b64\u66f4\u6539\u4f1a\u5f15\u8d77\u4e00\u7ec4\u65b0\u7684LSP\u6cdb\u6d2a\u3002<\/li>\n<\/ul>\n
          <\/section>\n

          P2P\u94fe\u8def\u4e0aLSDB\u540c\u6b65<\/strong><\/span><\/p>\n

           <\/p>\n

          \u4e24\u53f0\u8bbe\u5907\u5efa\u7acbP2P\u90bb\u5c45\u5173\u7cfb\u4e4b\u540e\uff0c\u5148\u4e92\u76f8\u53d1\u9001CSNP\u62a5\u6587\u3002\u5982\u679c\u5bf9\u7aef\u7684LSDB\u4e0eCSNP\u6ca1\u6709\u540c\u6b65\uff0c\u5219\u53d1\u9001PSNP\u8bf7\u6c42\u7d22\u53d6\u76f8\u5e94\u7684LSP\u3002<\/p>\n

           <\/p>\n

          \u5982\u4e0b\u56fe\u6240\u793a\u5047\u5b9aDeviceB\u5411DeviceA\u7d22\u53d6\u76f8\u5e94\u7684LSP\u3002DeviceA\u53d1\u9001DeviceB\u8bf7\u6c42\u7684LSP\u7684\u540c\u65f6\u542f\u52a8LSP\u91cd\u4f20\u5b9a\u65f6\u5668\uff0c\u5e76\u7b49\u5f85DeviceB\u53d1\u9001\u7684PSNP\u4f5c\u4e3a\u6536\u5230LSP\u7684\u786e\u8ba4\u3002<\/p>\n

           <\/p>\n

          \u5982\u679c\u5728\u63a5\u53e3LSP\u91cd\u4f20\u5b9a\u65f6\u5668\u8d85\u65f6\u540e\uff0cDeviceA\u8fd8\u6ca1\u6709\u6536\u5230DeviceB\u53d1\u9001\u7684PSNP\u62a5\u6587\u4f5c\u4e3a\u5e94\u7b54\uff0c\u5219\u91cd\u65b0\u53d1\u9001\u8be5LSP\u76f4\u81f3\u6536\u5230PSNP\u62a5\u6587\u3002<\/p>\n

           <\/p>\n<\/section>\n

          \u5728P2P\u94fe\u8def\u4e0aPSNP\u6709\u4e24\u79cd\u4f5c\u7528\uff0c\u4f5c\u4e3aAck\u5e94\u7b54\u4ee5\u786e\u8ba4\u6536\u5230\u7684LSP\u548c\u7528\u6765\u8bf7\u6c42\u6240\u9700\u7684LSP\u3002<\/p>\n<\/section>\n
          \n
          <\/div><\/section>\n<\/section>\n
           <\/p>\n

           <\/p>\n<\/section>\n

          \n
          \n
          \n
          05<\/strong><\/p>\n<\/section>\n<\/section>\n
          \n
          <\/section>\n<\/section>\n<\/section>\n
          \n
          \u00a0\u8def\u7531\u8ba1\u7b97\u662f\u5982\u4f55\u8fdb\u884c\u7684\uff1f<\/strong><\/p>\n<\/section>\n
          \n
          <\/section>\n<\/section>\n<\/section>\n<\/section>\n
           <\/p>\n

          IS-IS\u91c7\u7528SPF\uff08Shortest Path First\uff09\u7b97\u6cd5\u8ba1\u7b97\u8def\u7531\uff0c\u53ef\u4ee5\u8fbe\u5230\u8def\u7531\u5feb\u901f\u6536\u655b\u7684\u76ee\u7684\u3002<\/p>\n

           <\/p>\n

          IS-IS\u534f\u8bae\u4f7f\u7528\u94fe\u8def\u72b6\u6001\u901a\u544aLSA\u63cf\u8ff0\u7f51\u8def\u62d3\u6251\uff0c\u5373\u6709\u5411\u56fe\u3002Router LSA\u63cf\u8ff0\u8bbe\u5907\u4e4b\u95f4\u7684\u94fe\u63a5\u548c\u94fe\u8def\u7684\u5c5e\u6027\u3002\u8bbe\u5907\u5c06LSDB\u8f6c\u6362\u6210\u4e00\u5f20\u5e26\u6743\u7684\u6709\u5411\u56fe\uff0c\u8fd9\u5f20\u56fe\u4fbf\u662f\u5bf9\u6574\u4e2a\u7f51\u7edc\u62d3\u6251\u7ed3\u6784\u7684\u771f\u5b9e\u53cd\u6620\u3002\u5404\u4e2a\u8bbe\u5907\u5f97\u5230\u7684\u6709\u5411\u56fe\u662f\u5b8c\u5168\u76f8\u540c\u7684\u3002\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<\/section>\n

          \n
          <\/div><\/section>\n<\/section>\n
           <\/p>\n

          \u6bcf\u53f0\u8bbe\u5907\u6839\u636e\u6709\u5411\u56fe\uff0c\u4f7f\u7528SPF\u7b97\u6cd5\u8ba1\u7b97\u51fa\u4e00\u68f5\u4ee5\u81ea\u5df1\u4e3a\u6839\u7684\u6700\u77ed\u8def\u5f84\u6811\uff0c\u8fd9\u68f5\u6811\u7ed9\u51fa\u4e86\u5230\u81ea\u6cbb\u7cfb\u7edf\u4e2d\u5404\u8282\u70b9\u7684\u8def\u7531\u3002\u5982\u4e0b\u56fe\u6700\u5c0f\u751f\u6210\u6811\u6240\u793a\u3002<\/p>\n<\/section>\n

          \n
          <\/div><\/section>\n<\/section>\n
           <\/p>\n

          \u5f53OSPF\u7684\u94fe\u8def\u72b6\u6001\u6570\u636e\u5e93LSDB\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u9700\u8981\u91cd\u65b0\u8ba1\u7b97\u6700\u77ed\u8def\u5f84\uff0c\u5982\u679c\u6bcf\u6b21\u6539\u53d8\u90fd\u7acb\u5373\u8ba1\u7b97\u6700\u77ed\u8def\u5f84\uff0c\u5c06\u5360\u7528\u5927\u91cf\u8d44\u6e90\uff0c\u5e76\u4f1a\u5f71\u54cd\u8bbe\u5907\u7684\u6548\u7387\uff0c\u901a\u8fc7\u8c03\u8282SPF\u7684\u8ba1\u7b97\u95f4\u9694\u65f6\u95f4\uff0c\u53ef\u4ee5\u6291\u5236\u7531\u4e8e\u7f51\u7edc\u9891\u7e41\u53d8\u5316\u5e26\u6765\u7684\u5360\u7528\u8fc7\u591a\u8d44\u6e90\u3002\u7f3a\u7701\u60c5\u51b5\u4e0b\uff0cSPF\u65f6\u95f4\u95f4\u9694\u4e3a5\u79d2\u949f\u3002<\/p>\n

           <\/p>\n

          \u5177\u4f53\u7684\u8ba1\u7b97\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n

           <\/p>\n

          \u30101\u3011\u8ba1\u7b97\u533a\u57df\u5185\u8def\u7531\u3002<\/strong><\/p>\n

           <\/p>\n

          Router LSA\u548cNetwork LSA\u53ef\u4ee5\u7cbe\u786e\u7684\u63cf\u8ff0\u51fa\u6574\u4e2a\u533a\u57df\u5185\u90e8\u7684\u7f51\u7edc\u62d3\u6251\uff0c\u6839\u636eSPF\u7b97\u6cd5\uff0c\u53ef\u4ee5\u8ba1\u7b97\u51fa\u5230\u5404\u4e2a\u8bbe\u5907\u7684\u6700\u77ed\u8def\u5f84\u3002\u6839\u636eRouter LSA\u63cf\u8ff0\u7684\u4e0e\u8bbe\u5907\u7684\u7f51\u6bb5\u60c5\u51b5\uff0c\u5f97\u5230\u4e86\u5230\u8fbe\u5404\u4e2a\u7f51\u6bb5\u7684\u5177\u4f53\u8def\u5f84\u3002<\/p>\n

           <\/p>\n<\/section>\n

          \u5728\u8ba1\u7b97\u8fc7\u7a0b\u4e2d\uff0c\u5982\u679c\u6709\u591a\u6761\u7b49\u4ef7\u8def\u7531\uff0cSPF\u7b97\u6cd5\u4f1a\u5c06\u6240\u6709\u7b49\u4ef7\u8def\u5f84\u90fd\u4fdd\u7559\u5728LSDB\u4e2d\u3002<\/p>\n

           <\/p>\n

          \u30102\u3011\u8ba1\u7b97\u533a\u57df\u5916\u8def\u7531\u3002<\/strong><\/p>\n

           <\/p>\n

          \u4ece\u4e00\u4e2a\u533a\u57df\u5185\u90e8\u770b\uff0c\u76f8\u90bb\u533a\u57df\u7684\u8def\u7531\u5bf9\u5e94\u7684\u7f51\u6bb5\u597d\u50cf\u662f\u76f4\u63a5\u8fde\u63a5\u5728ABR\u4e0a\uff0c\u800c\u5230ABR\u7684\u6700\u77ed\u8def\u5f84\u5df2\u7ecf\u5728\u4e0a\u4e00\u8fc7\u7a0b\u4e2d\u8ba1\u7b97\u5b8c\u6bd5\uff0c\u6240\u4ee5\u76f4\u63a5\u68c0\u67e5Network Summary LSA\uff0c\u5c31\u53ef\u4ee5\u5f88\u5bb9\u6613\u5f97\u5230\u8fd9\u4e9b\u7f51\u6bb5\u7684\u6700\u77ed\u8def\u5f84\u3002\u53e6\u5916\uff0cASBR\u4e5f\u53ef\u4ee5\u770b\u6210\u662f\u8fde\u63a5\u5728ABR\u4e0a\uff0c\u6240\u4ee5ASBR\u7684\u6700\u77ed\u8def\u5f84\u4e5f\u53ef\u4ee5\u5728\u8fd9\u4e2a\u9636\u6bb5\u8ba1\u7b97\u51fa\u6765\u3002<\/p>\n

           <\/p>\n<\/section>\n

          \u5982\u679c\u8fdb\u884cSPF\u8ba1\u7b97\u7684\u8bbe\u5907\u662fABR\uff0c\u90a3\u4e48\u53ea\u9700\u8981\u68c0\u67e5\u9aa8\u5e72\u533a\u57df\u7684Network Summary LSA\u3002<\/p>\n

           <\/p>\n

          \u30103\u3011\u8ba1\u7b97\u81ea\u6cbb\u7cfb\u7edf\u5916\u8def\u7531\u3002<\/strong><\/p>\n

           <\/p>\n

          \u7531\u4e8e\u81ea\u6cbb\u7cfb\u7edf\u5916\u90e8\u7684\u8def\u7531\u53ef\u4ee5\u770b\u6210\u662f\u76f4\u63a5\u8fde\u63a5\u5728ASBR\u4e0a\uff0c\u800c\u5230ASBR\u7684\u6700\u77ed\u8def\u5f84\u5728\u4e0a\u4e00\u8fc7\u7a0b\u4e2d\u5df2\u7ecf\u8ba1\u7b97\u5b8c\u6bd5\uff0c\u6240\u4ee5\u9010\u6761\u68c0\u67e5AS External LSA\u5c31\u53ef\u4ee5\u5f97\u5230\u5230\u8fbe\u5404\u4e2a\u5916\u90e8\u7f51\u7edc\u7684\u6700\u77ed\u8def\u5f84\u3002<\/p>\n

           <\/p>\n<\/section>\n

          \n
          \n
          \n
          06<\/strong><\/p>\n<\/section>\n<\/section>\n
          \n
          <\/section>\n<\/section>\n<\/section>\n
          \n
          IS-IS\u6269\u5c55<\/strong><\/p>\n<\/section>\n
          \n
          <\/section>\n<\/section>\n<\/section>\n<\/section>\n
           <\/p>\n

          6.1\u00a0 IS-IS for IPv6<\/strong><\/span><\/p>\n

           <\/p>\n

          IETF\u7684\u6807\u51c6\u534f\u8bae\u4e2d\u89c4\u5b9a\u4e86IS-IS\u4e3a\u652f\u6301IPv6\u6240\u65b0\u589e\u7684\u5185\u5bb9\uff0c\u901a\u8fc7\u65b0\u589e\u652f\u6301IPv6\u8def\u7531\u4fe1\u606f\u7684\u4e24\u4e2aTLV\uff08Type-Length-Values\uff09\u548c\u4e00\u4e2a\u65b0\u7684NLPID\uff08Network Layer Protocol Identifier\uff09\uff0c\u4f7fIS-IS\u652f\u6301IPv6\u8def\u7531\u7684\u5904\u7406\u548c\u8ba1\u7b97\u3002<\/p>\n

           <\/p>\n

          \u65b0\u589e\u7684\u4e24\u4e2aTLV\u5206\u522b\u662f\uff1a<\/p>\n

           <\/p>\n

          IPv6 Reachability<\/strong><\/span><\/p>\n

           <\/p>\n

          \u7c7b\u578b\u503c\u4e3a236\uff080xEC\uff09\uff0c\u901a\u8fc7\u5b9a\u4e49\u8def\u7531\u4fe1\u606f\u524d\u7f00\u3001\u5ea6\u91cf\u503c\u7b49\u4fe1\u606f\u6765\u8bf4\u660e\u7f51\u7edc\u7684\u53ef\u8fbe\u6027\u3002<\/p>\n

           <\/p>\n

          IPv6 Interface Address<\/strong><\/span><\/p>\n

           <\/p>\n

          \u7c7b\u578b\u503c\u4e3a232\uff080xE8\uff09\uff0c\u5b83\u76f8\u5f53\u4e8eIPv4\u4e2d\u7684\u201cIP Interface Address\u201dTLV\uff0c\u53ea\u4e0d\u8fc7\u628a\u539f\u6765\u768432\u6bd4\u7279\u7684IPv4\u5730\u5740\u6539\u4e3a128\u6bd4\u7279\u7684IPv6\u5730\u5740\u3002<\/p>\n

          <\/section>\n

          NLPID\u662f\u6807\u8bc6\u7f51\u7edc\u5c42\u534f\u8bae\u62a5\u6587\u7684\u4e00\u4e2a8\u6bd4\u7279\u5b57\u6bb5\uff0cIPv6\u7684NLPID\u503c\u4e3a142\uff080x8E\uff09\u3002\u5982\u679cIS-IS\u652f\u6301IPv6\uff0c\u5219\u5411\u5916\u53d1\u5e03IPv6\u8def\u7531\u65f6\u5fc5\u987b\u643a\u5e26NLPID\u503c\u3002<\/p>\n

           <\/p>\n

          6.2\u00a0 IS-IS for SR-MPLS<\/strong><\/span><\/p>\n

           <\/p>\n

          \u6bb5\u8def\u7531SR\uff08Segment Routing\uff09\u662f\u57fa\u4e8e\u6e90\u8def\u7531\u7406\u5ff5\u800c\u8bbe\u8ba1\u7684\u5728\u7f51\u7edc\u4e0a\u8f6c\u53d1\u6570\u636e\u5305\u7684\u4e00\u79cd\u534f\u8bae\u3002Segment Routing MPLS\u662f\u6307\u57fa\u4e8eMPLS\u8f6c\u53d1\u5e73\u9762\u7684Segment Routing\uff0c\u7b80\u79f0\u4e3aSegment Routing\u3002Segment Routing\u5c06\u7f51\u7edc\u8def\u5f84\u5206\u6210\u4e00\u4e2a\u4e2a\u6bb5\uff0c\u5e76\u4e14\u4e3a\u8fd9\u4e9b\u6bb5\u548c\u7f51\u7edc\u4e2d\u7684\u8f6c\u53d1\u8282\u70b9\u5206\u914d\u6bb5\u6807\u8bc6ID\u3002\u901a\u8fc7\u5bf9\u6bb5\u548c\u7f51\u7edc\u8282\u70b9\u8fdb\u884c\u6709\u5e8f\u6392\u5217\uff08Segment List\uff09\uff0c\u5c31\u53ef\u4ee5\u5f97\u5230\u4e00\u6761\u8f6c\u53d1\u8def\u5f84\u3002<\/p>\n

           <\/p>\n

          Segment Routing\u5c06\u4ee3\u8868\u8f6c\u53d1\u8def\u5f84\u7684\u6bb5\u5e8f\u5217\u7f16\u7801\u5728\u6570\u636e\u5305\u5934\u90e8\uff0c\u968f\u6570\u636e\u5305\u4f20\u8f93\u3002\u63a5\u6536\u7aef\u6536\u5230\u6570\u636e\u5305\u540e\uff0c\u5bf9\u6bb5\u5e8f\u5217\u8fdb\u884c\u89e3\u6790\uff0c\u5982\u679c\u6bb5\u5e8f\u5217\u7684\u9876\u90e8\u6bb5\u6807\u8bc6\u662f\u672c\u8282\u70b9\u65f6\uff0c\u5219\u5f39\u51fa\u8be5\u6807\u8bc6\uff0c\u7136\u540e\u8fdb\u884c\u4e0b\u4e00\u6b65\u5904\u7406\uff1b\u5982\u679c\u4e0d\u662f\u672c\u8282\u70b9\uff0c\u5219\u4f7f\u7528ECMP\uff08Equal Cost Multiple Path\uff09\u65b9\u5f0f\u5c06\u6570\u636e\u5305\u8f6c\u53d1\u5230\u4e0b\u4e00\u8282\u70b9\u3002<\/p>\n

           <\/p>\n

          SR-MPLS\u4f7f\u7528IGP\u534f\u8bae\u8fdb\u884c\u62d3\u6251\u4fe1\u606f\u3001\u524d\u7f00\u4fe1\u606f\u3001SRGB\u548c\u6807\u7b7e\u4fe1\u606f\u7684\u901a\u544a\u3002IS-IS\u534f\u8bae\u4e3a\u4e86\u5b8c\u6210\u4e0a\u8ff0\u529f\u80fd\uff0c\u5bf9\u4e8e\u534f\u8bae\u62a5\u6587\u7684TLV\u8fdb\u884c\u4e86\u4e00\u4e9b\u6269\u5c55\u3002IS-IS\u534f\u8bae\u4e3b\u8981\u9488\u5bf9SID\u548c\u7f51\u5143SR-MPLS\u80fd\u529b\u7684\u5b50TLV\uff08Sub-TLV\uff09\u8fdb\u884c\u4e86\u4e00\u4e9b\u6269\u5c55\u3002<\/p>\n

           <\/p>\n

          \u643a\u5e26SR\u4fe1\u606f\u7684IS-IS\u00a0LSP\u62a5\u6587\u683c\u5f0f\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<\/section>\n

          \n
          <\/div><\/section>\n<\/section>\n
           <\/p>\n

          Prefix-SID Sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u901a\u544aSR-MPLS\u7684Prefix SID\u3002<\/p>\n

           <\/p>\n

          Adj-SID Sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u5728P2P\u7f51\u7edc\u4e2d\u901a\u544aSR-MPLS\u7684Adjacency SID\u3002<\/p>\n

           <\/p>\n

          LAN-Adj-SID Sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u5728LAN\u7f51\u7edc\u4e2d\u901a\u544aSR-MPLS\u7684Adjacency SID\u3002<\/p>\n

           <\/p>\n

          SID\/Label Sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u901a\u544aSR-MPLS\u7684SID\u6216MPLS Label\u3002<\/p>\n

           <\/p>\n

          SID\/Label Binding TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u901a\u544a\u524d\u7f00\u5230SID\u7684\u6620\u5c04\u3002<\/p>\n

           <\/p>\n

          SR-Capabilities Sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u5bf9\u5916\u901a\u544a\u81ea\u5df1\u7684SR-MPLS\u80fd\u529b\u3002<\/p>\n

           <\/p>\n

          SR Local Block Sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u901a\u544a\u7f51\u5143\u4e3a\u672c\u5730SID\u9884\u7559\u7684\u6807\u7b7e\u8303\u56f4\u3002<\/p>\n

           <\/p>\n

          6.3\u00a0 IS-IS for SRv6<\/strong><\/span><\/p>\n

           <\/p>\n

          SRv6\uff08Segment Routing IPv6\uff0c\u57fa\u4e8eIPv6\u8f6c\u53d1\u5e73\u9762\u7684\u6bb5\u8def\u7531\uff09\u662f\u57fa\u4e8e\u6e90\u8def\u7531\u7406\u5ff5\u800c\u8bbe\u8ba1\u7684\u5728\u7f51\u7edc\u4e0a\u8f6c\u53d1IPv6\u6570\u636e\u5305\u7684\u4e00\u79cd\u534f\u8bae\u3002SRv6\u901a\u8fc7\u5728IPv6\u62a5\u6587\u4e2d\u63d2\u5165\u4e00\u4e2a\u8def\u7531\u6269\u5c55\u5934SRH\uff08Segment Routing Header\uff09\uff0c\u5728SRH\u4e2d\u538b\u5165\u4e00\u4e2a\u663e\u5f0f\u7684IPv6\u5730\u5740\u6808\uff0c\u5e76\u7531\u4e2d\u95f4\u8282\u70b9\u4e0d\u65ad\u7684\u8fdb\u884c\u66f4\u65b0\u76ee\u7684\u5730\u5740\u548c\u504f\u79fb\u5730\u5740\u6808\u7684\u64cd\u4f5c\u6765\u5b8c\u6210\u9010\u8df3\u8f6c\u53d1\u3002<\/p>\n

           <\/p>\n

          SR\u4f7f\u7528IGP\u534f\u8bae\u8fdb\u884c\u62d3\u6251\u4fe1\u606f\u3001\u524d\u7f00\u4fe1\u606f\u3001Locator\u548cSID\u4fe1\u606f\u7684\u901a\u544a\u3002IS-IS\u534f\u8bae\u4e3a\u4e86\u5b8c\u6210\u4e0a\u8ff0\u529f\u80fd\uff0c\u5bf9\u4e8e\u534f\u8bae\u62a5\u6587\u7684TLV\u8fdb\u884c\u4e86\u4e00\u4e9b\u6269\u5c55\u3002<\/p>\n

           <\/p>\n

          \u643a\u5e26SRv6\u4fe1\u606f\u7684IS-IS\u00a0LSP\u62a5\u6587\u683c\u5f0f\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<\/section>\n

          \n
          <\/div><\/section>\n<\/section>\n
           <\/p>\n

          SRv6 Locator TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u901a\u544aSRv6\u7684Locator\u4ee5\u53ca\u8be5Locator\u76f8\u5173\u7684End SID\u3002<\/p>\n

           <\/p>\n

          SRv6 Capabilities sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u901a\u544aSRv6\u80fd\u529b\u3002<\/p>\n

          <\/section>\n

          SRv6 End SID sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u901a\u544aSRv6\u7684SID\u3002<\/p>\n

           <\/p>\n

          SRv6 End.X SID sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u5728P2P\u7f51\u7edc\u4e2d\u901a\u544aSRv6\u7684SID\u3002<\/p>\n

           <\/p>\n

          SRv6 LAN End.X SID sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u5728LAN\u7f51\u7edc\u4e2d\u901a\u544aSRv6\u7684SID\u3002<\/p>\n

           <\/p>\n

          Node MSD sub-TLV\uff1a<\/strong><\/span>\u7528\u4e8e\u901a\u544a\u8bbe\u5907\u80fd\u591f\u63a5\u53d7\u7684\u6700\u5927SID\u6808\u6df1\u5ea6MSD\uff08Maximum SID Depth\uff09\u3002<\/p>\n

           <\/p>\n<\/section>\n

          \n
          \n
          \n
          07<\/strong><\/p>\n<\/section>\n<\/section>\n
          \n
          <\/section>\n<\/section>\n<\/section>\n
          \n
          IS-IS\u4e0eOSPF\u7684\u533a\u522b\uff1f<\/strong><\/p>\n<\/section>\n
          \n
          <\/section>\n<\/section>\n<\/section>\n<\/section>\n
           <\/p>\n

          IS-IS\u4e0eOSPF\u7684\u533a\u522b\u5982\u4e0b\uff1a<\/p>\n

           <\/p>\n

          \u534f\u8bae\u7c7b\u578b\uff1a<\/strong><\/span>OSPF\u4f7f\u7528IP\u5c42\u534f\u8bae\u3002IS-IS\u4f7f\u7528\u94fe\u8def\u5c42\u534f\u8bae\u3002<\/p>\n

           <\/p>\n

          \u534f\u8bae\u6269\u5c55\u6027\uff1a<\/strong><\/span>OSPF\u901a\u8fc7\u6269\u5c55LSA type\u5e94\u5bf9\u65b0\u7684\u9700\u6c42\uff0c\u6269\u5c55\u6027\u4e00\u822c\u3002\u6bd4\u5982\u5bf9IPv6\u7684\u652f\u6301\uff0c\u9700\u8981\u65b0\u7684OSPFv3\u534f\u8bae\u6765\u652f\u6301\u3002IS-IS\u7531\u4e8e\u672c\u8eabTLV\u7684\u62a5\u6587\u7ed3\u6784\uff0c\u51b3\u5b9a\u4e86\u5176\u8d85\u5f3a\u7684\u6269\u5c55\u6027\u3002\u6bd4\u5982\u5bf9IPv6\u7684\u652f\u6301\uff0c\u4ec5\u9700\u6269\u5c55TLV\u3002<\/p>\n

           <\/p>\n

          \u9002\u7528\u8303\u56f4\uff1a<\/strong><\/span>OSPF\u5e94\u7528\u4e8e\u89c4\u6a21\u9002\u4e2d\u7684\u7f51\u7edc\u4e2d\uff0c\u6700\u591a\u53ef\u652f\u6301\u51e0\u767e\u53f0\u8bbe\u5907\u3002\u4f8b\u5982\uff0c\u4e2d\u5c0f\u578b\u4f01\u4e1a\u7f51\u7edc\u3002IS-IS\u5e94\u7528\u4e8e\u89c4\u6a21\u8f83\u5927\u7684\u7f51\u7edc\u4e2d\u3002\u4f8b\u5982\uff0c\u5927\u578bISP\uff08Internet Service Provider\uff09\u4e2d\u3002<\/p>\n

           <\/p>\n

          \u8def\u7531\u7b97\u6cd5\uff1a<\/strong><\/span>OSPF\u91c7\u7528\u6700\u77ed\u8def\u5f84SPF\uff08Shortest Path First\uff09\u7b97\u6cd5\u3002\u901a\u8fc7\u94fe\u8def\u72b6\u6001\u901a\u544aLSA\uff08Link State Advertisement\uff09\u63cf\u8ff0\u7f51\u7edc\u62d3\u6251\uff0c\u4f9d\u636e\u7f51\u7edc\u62d3\u6251\u751f\u6210\u4e00\u68f5\u6700\u77ed\u8def\u5f84\u6811SPT\uff08Shortest Path Tree\uff09\uff0c\u8ba1\u7b97\u51fa\u5230\u7f51\u7edc\u4e2d\u6240\u6709\u76ee\u7684\u5730\u7684\u6700\u77ed\u8def\u5f84\u3002IS-IS\u91c7\u7528\u6700\u77ed\u8def\u5f84SPF\u7b97\u6cd5\u3002\u4f9d\u636e\u7f51\u7edc\u62d3\u6251\u751f\u6210\u4e00\u68f5\u6700\u77ed\u8def\u5f84\u6811SPT\uff0c\u8ba1\u7b97\u51fa\u5230\u7f51\u7edc\u4e2d\u6240\u6709\u76ee\u7684\u5730\u7684\u6700\u77ed\u8def\u5f84\u3002\u5728IS-IS\u4e2d\uff0cSPF\u7b97\u6cd5\u5206\u522b\u72ec\u7acb\u7684\u5728Level-1\u548cLevel-2\u6570\u636e\u5e93\u4e2d\u8fd0\u884c\u3002<\/p>\n

           <\/p>\n

          \u6536\u655b\u901f\u5ea6\uff1a<\/strong><\/span>OSPF\u4e0eIS-IS\u6536\u655b\u901f\u5ea6\u90fd\u6bd4\u8f83\u5feb\uff0c\u5c0f\u4e8e1s\u3002<\/p>\n

           <\/p>\n

          \u533a\u57df\u5212\u5206\uff1a<\/strong><\/span>OSPF\u662f\u57fa\u4e8e\u63a5\u53e3\u5212\u5206\u533a\u57df\u7684\uff0cIS-IS\u662f\u57fa\u4e8e\u8def\u7531\u5668\u5212\u5206\u533a\u57df\u7684\u3002<\/p>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

          01 \u4e3a\u4ec0\u4e48\u9700\u8981IS-IS\uff1f   \u5728IS-IS\u51fa\u73b0\u524d\uff0c\u7f51\u7edc\u4e0a\u5e7f\u6cdb\u4f7f\u7528RIP\uff08Routing Info […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,2],"tags":[],"class_list":["post-11754","post","type-post","status-publish","format-standard","hentry","category-cisco","category-network"],"_links":{"self":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/11754","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11754"}],"version-history":[{"count":1,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/11754\/revisions"}],"predecessor-version":[{"id":11783,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/11754\/revisions\/11783"}],"wp:attachment":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11754"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11754"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}