{"id":165,"date":"2007-07-25T08:51:29","date_gmt":"2007-07-25T00:51:29","guid":{"rendered":"http:\/\/www.liangliang.org.cn\/blog\/?p=165"},"modified":"2007-07-25T08:51:29","modified_gmt":"2007-07-25T00:51:29","slug":"pppoe%e5%8d%8f%e8%ae%ae%e7%ae%80%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/www.liangliang.org.cn\/?p=165","title":{"rendered":"PPPOE\u534f\u8bae\u7b80\u4ecb"},"content":{"rendered":"

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0modem\u63a5\u5165\u6280\u672f\u9762\u4e34\u4e00\u4e9b\u76f8\u4e92\u77db\u76fe\u7684\u76ee\u6807\uff0c\u65e2\u8981\u901a\u8fc7\u540c\u4e00\u4e2a\u7528\u6237\u524d\u7f6e\u63a5\u5165\u8bbe\u5907\u8fde\u63a5\u8fdc\u7a0b\u7684\u591a\u4e2a\u7528\u6237\u4e3b\u673a\uff0c\u53c8\u8981\u63d0\u4f9b\u7c7b\u4f3c\u62e8\u53f7\u4e00\u6837\u7684\u63a5\u5165\u63a7\u5236\uff0c\u8ba1\u8d39\u7b49\u529f\u80fd\uff0c\u800c\u4e14\u8981\u5c3d\u53ef\u80fd\u5730\u51cf\u5c11\u7528\u6237\u7684\u914d\u7f6e\u64cd\u4f5c\u3002
\nPPPOE\u7684\u76ee\u6807\u5c31\u662f\u89e3\u51b3\u4e0a\u8ff0\u95ee\u9898\uff0c1998\u5e74\u540e\u671f\u95ee\u4e16\u7684\u4ee5\u592a\u7f51\u4e0a\u70b9\u5bf9\u70b9\u534f\u8bae\uff08PPPoverEthernet\uff09\u6280\u672f\u662f\u7531Redback\u7f51\u7edc\u516c\u53f8\u3001\u5ba2\u6237\u7aef\u8f6f\u4ef6\u5f00\u53d1\u5546RouterWare\u516c\u53f8\u4ee5\u53caWorldcom\u5b50\u516c\u53f8UUNET\u3000\u3000\u3000\u3000\u3000\u3000Technologies\u516c\u53f8\u5728IETFRFC\u7684\u57fa\u7840\u4e0a\u8054\u5408\u5f00\u53d1\u7684\u3002\u901a\u8fc7\u628a\u6700\u7ecf\u6d4e\u7684\u5c40\u57df\u7f51\u6280\u672f\uff0d\u4ee5\u592a\u7f51\u548c\u70b9\u5bf9\u70b9\u534f\u8bae\u7684\u53ef\u6269\u5c55\u6027\u53ca\u7ba1\u7406\u63a7\u5236\u529f\u80fd\u7ed3\u5408\u5728\u4e00\u8d77\uff0c\u7f51\u7edc\u670d\u52a1\u63d0\u4f9b\u5546\u548c\u7535\u4fe1\u8fd0\u8425\u5546\u4fbf\u53ef\u5229\u7528\u53ef\u9760\u548c\u719f\u6089\u7684\u6280\u672f\u6765\u52a0\u901f\u90e8\u7f72\u9ad8\u901f\u4e92\u8054\u7f51\u4e1a\u52a1\u3002\u5b83\u4f7f\u670d\u52a1\u63d0\u4f9b\u5546\u5728\u901a\u8fc7\u6570\u5b57\u7528\u6237\u7ebf\u3001\u7535\u7f06\u8c03\u5236\u89e3\u8c03\u5668\u6216\u65e0\u7ebf\u8fde\u63a5\u7b49\u65b9\u5f0f\uff0c\u63d0\u4f9b\u652f\u6301\u591a\u7528\u6237\u7684\u5bbd\u5e26\u63a5\u5165\u670d\u52a1\u65f6\u66f4\u52a0\u7b80\u4fbf\u6613\u884c\u3002\u540c\u65f6\u8be5\u6280\u672f\u4ea6\u7b80\u5316\u4e86\u6700\u7ec8\u7528\u6237\u5728\u9009\u62e9\u8fd9\u4e9b\u670d\u52a1\u65f6\u7684\u914d\u7f6e\u64cd\u4f5c\u3002<\/p>\n


\nPPPOE\u7279\u70b9
\nPPPOE\u5728\u6807\u51c6PPP\u62a5\u6587\u7684\u524d\u9762\u52a0\u4e0a\u4ee5\u592a\u7f51\u7684\u62a5\u5934\uff0c\u4f7f\u5f97PPPOE\u63d0\u4f9b\u901a\u8fc7\u7b80\u5355\u6865\u63a5\u63a5\u5165\u8bbe\u5907\u8fde\u63a5\u8fdc\u7aef\u63a5\u5165\u8bbe\u5907\uff0c\u5e76\u53ef\u4ee5\u5229\u7528\u4ee5\u592a\u7f51\u7684\u5171\u4eab\u6027\u8fde\u63a5\u591a\u4e2a\u7528\u6237\u4e3b\u673a\uff0c\u5728\u8fd9\u4e2a\u6a21\u578b\u4e0b\uff0c\u6bcf\u4e2a\u7528\u6237\u4e3b\u673a\u5229\u7528\u81ea\u8eab\u7684ppp\u5806\u6808\uff0c\u7528\u6237\u4f7f\u7528\u719f\u6089\u7684\u754c\u9762\u3002\u63a5\u5165\u63a7\u5236\uff0c\u8ba1\u8d39\u7b49\u90fd\u53ef\u4ee5\u9488\u5bf9\u6bcf\u4e2a\u7528\u6237\u6765\u8fdb\u884c\u3002
\nPPPOE\u7684\u4f18\u70b9\uff1a
\n.\ufffd\u5b89\u88dd\u4e0e\u64cd\u4f5c\u65b9\u5f0f\u7c7b\u4f3c\u4e8e\u4ee5\u5f80\u7684\u62e8\u53f7\u7f51\u7edc\u6a21\u5f0f\uff0c\u65b9\u4fbf\u7528\u6236\u4f7f\u7528\u3002
\n.\ufffd\u7528\u6237\u5904\u7684XDSL\u8c03\u5236\u89e3\u8c03\u5668\u65e0\u987b\u4efb\u4f55\u914d\u7f6e\u3002
\n.\ufffd\u5141\u8bb8\u591a\u4e2a\u7528\u6237\u5171\u4eab\u4e00\u4e2a\u9ad8\u901f\u6570\u636e\u63a5\u5165\u94fe\u8def\u3002
\n.\ufffd\u9002\u5e94\u5c0f\u578b\u4f01\u4e1a\u548c\u8fdc\u7a0b\u529e\u516c\u7684\u8981\u6c42\u3002
\n.\ufffd\u7ec8\u7aef\u7528\u6237\u53ef\u540c\u65f6\u63a5\u5165\u591a\u4e2aISP\uff0c\u8fd9\u79cd\u52a8\u6001\u670d\u52a1\u9009\u62e9\u7684\u529f\u80fd\u53ef\u4ee5\u4f7f\u3000ISP\u5bb9\u6613\u521b\u5efa\u548c\u63d0\u4f9b\u65b0\u7684\u4e1a\u52a1\u3002
\n.\ufffd\u517c\u5bb9\u73b0\u6709\u6240\u6709\u7684XDSLModem\u548cDSLAM\u3002
\n.\ufffd\u53ef\u4e0eISP\u6709\u63a5\u5165\u7ed3\u6784\u76f8\u878d\u5408\u3002<\/p>\n

PPPOE\u7684\u5e27\u683c\u5f0f<\/p>\n

\u53c2\u6570\u53d6\u503cETHER_TYPE\uff1a 0x8863 Discovery Stage
\n0x8864 PPP Session Stage
\nCODE\uff1a
\n0x00 PPP Session Stage
\n0x09 PPPOE Active Discovery Initiation (PADI) packet
\n0x07 PPPOE Active Discovery Offer (PADO) packet
\n0x19 PPPOE Active Discovery Request (PADR) packet
\n0x65 PPPOE Active Discovery Session-confirmation
\n(PADS) packet
\n0xa7 PPPOE Active Discovery Terminate (PADT) packet
\nTAG_TYPES\uff1a
\n0x0000 End-Of-List
\n0x0101 Service-Name
\n0x0102 AC-Name
\n0x0103 Host-Uniq
\n0x0104 AC-Cookie
\n0x0105 Vendor-Specific
\n0x0110 Relay-Session-Id
\n0x0201 Service-Name-Error
\n0x0202 AC-System-Error
\n0x0203 Generic-Error
\nPPPOE\u7684\u5b9e\u73b0\u8fc7\u7a0b
\n\u5efa\u7acb\u4e00\u4e2a\u4ee5\u592a\u7f51\u4e0a\u70b9\u5bf9\u70b9\u534f\u8bae\u4f1a\u8bdd\u5305\u62ec\u4e24\u4e2a\u9636\u6bb5\uff1a1. \u53d1\u73b0\uff08Discovery\uff09\u9636\u6bb5<\/p>\n

\u5728Discovery\u8fc7\u7a0b\u4e2d\u7528\u6237\u4e3b\u673a\u4ee5\u5e7f\u64ad\u65b9\u5f0f\u5bfb\u627e\u53ef\u4ee5\u8fde\u63a5\u7684\u6240\u6709\u63a5\u5165\u8bbe\u5907\uff0c\u83b7\u5f97\u5176\u4ee5\u592a\u7f51MAC\u5730\u5740\u3002\u7136\u540e\u9009\u62e9\u9700\u8981\u8fde\u63a5\u7684\u7528\u6237\u4e3b\u673a\u5e76\u6700\u540e\u83b7\u5f97\u6240\u8981\u5efa\u7acb\u7684PPP\u4f1a\u8bdd\u7684SESSION_ID\u3002\u5728Discovery\u8fc7\u7a0b\u4e2d\u8282\u70b9\u95f4\u662f\u5ba2\u6237\u7aef\uff0d\u670d\u52a1\u5668\u5173\u7cfb\uff0c \u4e00\u4e2a\u7528\u6237\u4e3b\u673a\uff08\u5ba2\u6237\u7aef\uff09\u6700\u7ec8\u8981\u53d1\u73b0\u4e00\u4e2a\u63a5\u5165\u8bbe\u5907\uff08\u670d\u52a1\u5668\uff09\u3002\u5728\u7f51\u7edc\u62d3\u6734\u4e2d\uff0c\u4e00\u822c\u6709\u4e0d\u6b62\u4e00\u4e2a\u7684\u63a5\u5165\u8bbe\u5907\u53ef\u4ee5\u901a\u4fe1\uff0cDiscovery\u9636\u6bb5\u5141\u8bb8\u7528\u6237\u4e3b\u673a\u53d1\u73b0\u6240\u6709\u7684\u63a5\u5165\u8bbe\u5907\uff0c\u5e76\u4ece\u4e2d\u9009\u62e9\u4e00\u4e2a\u3002\u5f53Discovery\u9636\u6bb5\u7ed3\u675f\u65f6\uff0c \u7528\u6237\u4e3b\u673a\u548c\u63a5\u5165\u8bbe\u5907\u4e4b\u95f4\u90fd\u83b7\u5f97\u4e86\u53ef\u4f9b\u4ee5\u592a\u7f51\u4e0a\u5efa\u7acbPPP\u8fde\u63a5\u7684\u5168\u90e8\u4fe1\u606f\u3002Discovery\u9636\u6bb5\u4fdd\u6301\u65e0\u8fde\u63a5\u72b6\u6001\u76f4\u5230\u4e00\u4e2aPPP\u4f1a\u8bdd\u7684\u5efa\u7acb\u3002\u4e00\u65e6PPP\u8fde\u63a5\u5efa\u7acb\uff0c\u5219\u7528\u6237\u4e3b\u673a\u548c\u63a5\u5165\u8bbe\u5907\u90fd\u5fc5\u987b\u4e3aPPP\u865a\u62df\u7aef\u53e3\u5206\u914d\u8d44\u6e90\u3002
\nPPP \u4f1a\u8bdd\u9636\u6bb5
\n\u7528\u6237\u4e3b\u673a\u4e0e\u5728\u53d1\u73b0\u9636\u6bb5\u786e\u5b9a\u7684\u63a5\u5165\u8bbe\u5907\u8fdb\u884cPPP\u534f\u5546\u3002\u8fd9\u4e2a\u534f\u5546\u8fc7\u7a0b\u4e0e\u6807\u51c6\u7684PPP\u534f\u5546\u5e76\u6ca1\u6709\u4efb\u4f55\u533a\u522b\u3002\u5728PPP\u4f1a\u8bdd\u9636\u6bb5\u8282\u70b9\u95f4\u662f\u5bf9\u7b49\u5173\u7cfb\u3002
\n\u53d1\u73b0\uff08Discovery\uff09\u9636\u6bb5\u8be6\u8ff0
\n\u5178\u578b\u7684\u53d1\u73b0\uff08Discovery\uff09\u9636\u6bb5\u5171\u5305\u62ec4\u4e2a\u6b65\u9aa4\uff1a
\n1. \u7528\u6237\u4e3b\u673a\u53d1\u51faPPPOE\u6709\u6548\u53d1\u73b0\u521d\u59cb\uff08PADI\uff09\u5305\u3002\u4ee5\u592a\u7f51\u76ee\u7684\u5730\u5740\u4e3a\u5e7f\u64ad\u5730\u57400xffffffff\uff0c CODE \u5b57\u6bb5\u4e3a0x09\uff0c SESSION_ID\u4e3a0x0000\u3002PADI\u5305\u5fc5\u987b\u81f3\u5c11\u5305\u542b\u4e00\u4e2a\u670d\u52a1\u540d\u79f0\u7c7b\u578b\uff08Service-Name\uff09\u7684\u6807\u7b7e\uff08\u6807\u7b7e\u7c7b\u578b\u5b57\u6bb5\u4e3a0x0101\uff09\uff0c \u5411\u63a5\u5165\u8bbe\u5907\u63d0\u51fa\u6240\u8981\u6c42\u63d0\u4f9b\u7684\u670d\u52a1\u3002\u4e00\u4e2a\u5b8c\u6574\u7684PADI\uff08\u5305\u62ecPPPOE\u5934\uff09\u4e0d\u80fd\u8d85\u8fc71484\u5b57\u8282\uff0c\u4ee5\u7559\u4e0b\u5145\u8db3\u7684\u9884\u7559\u7ed9agent\u8bbe\u5907\u589e\u52a0Relay-Session-Id\u6807\u8bc6\u3002
\n2. \u63a5\u5165\u8bbe\u5907\u6536\u5230\u5728\u670d\u52a1\u8303\u56f4\u5185\u7684PADI\u5305\u540e\uff0c\u53d1\u9001PPPOE\u6709\u6548\u53d1\u73b0\u63d0\u4f9b\uff08PADO\uff09 \u5305\u4ee5\u54cd\u5e94\u8bf7\u6c42\u3002\u5176CODE\u5b57\u6bb5\u4e3a0x07 \uff0cSESSION_ID\u4ecd\u4e3a0x0000\u3002PADO\u5305\u5fc5\u987b\u5305\u542b\u4e00\u4e2a\u63a5\u5165\u8bbe\u5907\u540d\u79f0\u7c7b\u578b\uff08AC-Name\uff09\u7684\u6807\u7b7e\uff08\u6807\u7b7e\u7c7b\u578b\u5b57\u6bb5\u4e3a0x0102\uff09\u4ee5\u53ca\u4e00\u4e2a\u6216\u591a\u4e2a\u670d\u52a1\u540d\u79f0\u7c7b\u578b\u6807\u7b7e\uff0c\u8868\u660e\u53ef\u5411\u7528\u6237\u4e3b\u673a\u63d0\u4f9b\u7684\u670d\u52a1\u79cd\u7c7b\u3002
\n3.\u7528\u6237\u4e3b\u673a\u5728\u53ef\u80fd\u6536\u5230\u7684\u591a\u4e2aPADO\u5305\u4e2d\u9009\u62e9\u4e00\u4e2a\u5408\u9002\u7684\u63a5\u5165\u8bbe\u5907\uff0c\u9009\u62e9\u7684\u539f\u5219\u662f\u6839\u636ePADO\u4e2d\u63a5\u5165\u8bbe\u5907\u540d\u79f0\u7c7b\u578b\u6807\u7b7e\u548c\u670d\u52a1\u540d\u79f0\u7c7b\u578b\u6807\u7b7e\u7684\u5185\u5bb9\u3002\u7136\u540e\u5411\u6240\u9009\u62e9\u7684\u63a5\u5165\u8bbe\u5907\u53d1\u9001PPPOE\u6709\u6548\u53d1\u73b0\u8bf7\u6c42\uff08PADR\uff09\u5305\u3002\u5176CODE \u5b57\u6bb5\u4e3a0x19\uff0cSESSION_ID\u4ecd\u4e3a0x0000\u3002PADR\u5305\u5fc5\u987b\u5305\u4e00\u4e2a\u670d\u52a1\u540d\u79f0\u7c7b\u578b\u6807\u7b7e\uff0c\u786e\u5b9a\u5411\u63a5\u5165\u8bbe\u5907\u8bf7\u6c42\u7684\u670d\u52a1\u79cd\u7c7b\u3002\u5f53\u4e00\u4e2a\u7528\u6237\u4e3b\u673a\u5728\u786e\u5b9a\u65f6\u95f4\u6ca1\u6709\u6536\u5230PADO\uff0c\u4ed6\u4f1a\u91cd\u53d1\u4e00\u4e2aPADI\uff0c\u540c\u65f6\u7b49\u5f85\u4e24\u500d\u7684\u65f6\u95f4\u3002\u8fd9\u79cd\u8fc7\u7a0b\u53ef\u4ee5\u6839\u636e\u9700\u8981\u91cd\u590d\u591a\u6b21\u3002
\n4.\u63a5\u5165\u8bbe\u5907\u6536\u5230PADR\u5305\u540e\u51c6\u5907\u5f00\u59cbPPP\u4f1a\u8bdd\uff0c\u5b83\u53d1\u9001\u4e00\u4e2aPPPOE \u6709\u6548\u53d1\u73b0\u4f1a\u8bdd\u786e\u8ba4\uff08 PADS\uff09\u5305\u3002\u5176CODE \u5b57\u6bb5\u4e3a0x65 \uff0c SESSION_ID\u4e3a\u63a5\u5165\u8bbe\u5907\u6240\u4ea7\u751f\u7684\u4e00\u4e2a\u552f\u4e00\u7684PPPOE\u4f1a\u8bdd\u6807\u8bc6\u53f7\u7801\u30020xffff\u4f5c\u4e3a\u9884\u7559\u8d44\u6e90\uff0c\u76ee\u524d\u4e0d\u80fd\u88ab\u4f7f\u7528\u4f5cSESSION_ID\u3002PADS\u5305\u4e5f\u5fc5\u987b\u5305\u542b\u4e00\u4e2a\u670d\u52a1\u540d\u79f0\u7c7b\u578b\u7684\u6807\u7b7e\u786e\u8ba4\u5411\u7528\u6237\u4e3b\u673a\u63d0\u4f9b\u7684\u670d\u52a1\u3002\u5f53\u7528\u6237\u4e3b\u673a\u6536\u5230PADS\u5305\u786e\u8ba4\u540e\uff0c\u53cc\u65b9\u5c31\u8fdb\u5165PPP\u4f1a\u8bdd\u9636\u6bb5\u3002\u5982\u679c\u63a5\u5165\u8bbe\u5907\u4e0d\u80fd\u8bc6\u522bPADR\u4e2d\u7684\u670d\u52a1\u540d\u79f0\u7c7b\u578b\u7684\u6807\u7b7e\uff0c\u5219\u4f1a\u56de\u4e00\u4e2a\u5305\u542b\u670d\u52a1\u540d\u79f0\u9519\u8bef\uff08 Service-Name-Error \uff09 \u6807\u7b7e\u7684PADS \uff0c\u5176SESSION_ID\u4ecd\u7136\u662f0x0000\u3002\u5982\u679c\u7528\u6237\u4e3b\u673a\u5728\u786e\u5b9a\u65f6\u95f4\u6ca1\u6536\u5230PADS\u5305\uff0c\u4e0e\u6ca1\u6536\u5230PADO\u4f5c\u540c\u6837\u5904\u7406\u3002
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