{"id":796,"date":"2025-07-03T13:55:53","date_gmt":"2025-07-03T05:55:53","guid":{"rendered":"https:\/\/asahiya.cn\/?p=796"},"modified":"2025-07-11T16:37:56","modified_gmt":"2025-07-11T08:37:56","slug":"hcia-datacom-stp-2","status":"publish","type":"post","link":"https:\/\/asahiya.cn\/index.php\/2025\/07\/03\/hcia-datacom-stp-2\/","title":{"rendered":"HCIA-Datacom\u2014\u2014\u2014\u2014\u2014\u2014RSTP"},"content":{"rendered":"\t\t
\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t

\u77e5\u8bc6\u56de\u987e\uff1a
1\u3001stp\u7684\u5207\u6362\uff1a
\u00a0 \u00a01\uff09\u63a5\u53e3\u7684up\/down\uff0c\u5230\u8f6c\u53d1\uff0c\u9700\u8981\u7b4930\u79d2
\u00a0 \u00a0 \u00a0 discard\uff08RSTP\u7684\u72b6\u6001\u5305\u542b\uff1adisable\uff0cblocking\uff0clistening\uff09
\u00a0 \u00a0 \u00a0 ||
\u00a0 \u00a0 \u00a0 Forwarding delay 15\u79d2
\u00a0 \u00a0 \u00a0 ||
\u00a0 \u00a0 \u00a0 lerning
\u00a0 \u00a0 \u00a0 ||
\u00a0 \u00a0 \u00a0 Forwarding delay 15\u79d2
\u00a0 \u00a0 \u00a0 ||
\u00a0 \u00a0 \u00a0 Forwarding\u00a0
\u00a0 \u00a02)\u76f4\u8fde\u94fe\u8def\uff0c\u5207\u6362\u5907\u4efd\uff0c\u9700\u8981\u7b4930\u79d2
\u00a0 \u00a0 \u00a0 discard\uff08RSTP\u7684\u72b6\u6001\u5305\u542b\uff1adisable\uff0cblocking\uff0clistening\uff09
\u00a0 \u00a0 \u00a0 ||
\u00a0 \u00a0 \u00a0 Forwarding delay 15\u79d2
\u00a0 \u00a0 \u00a0 ||
\u00a0 \u00a0 \u00a0 lerning
\u00a0 \u00a0 \u00a0 ||
\u00a0 \u00a0 \u00a0 Forwarding delay 15\u79d2
\u00a0 \u00a0 \u00a0 ||
\u00a0 \u00a0 \u00a0 Forwarding\u00a0
\u00a0 \u00a03)\u975e\u76f4\u8fde\u94fe\u8def\u6545\u969c\uff0c\u963b\u585e\u5230\u8f6c\u53d1\uff0c\u9700\u8981\u7b4930\/50\u79d2
\u00a0 \u00a0 \u00a0 \u6807\u51c6\uff1a50\u79d2 \uff0c30\u79d2\uff08\u534e\u4e3a\uff09
\u00a0 \u00a0 \u00a0 \u5982\u679cSW2\u548cSW3\u4e4b\u95f4\u53d1\u751f\u62e5\u585e\uff0cSW2\u6536\u4e0d\u5230SW3bpdu\uff0c\u65e0\u8bba\u534e\u4e3a\u548c\u6807\u51c6\u90fd\u898150\u79d2
RSTP\u5feb\u901f\u751f\u6210\u6811\u4e3a\u4ec0\u4e48\u5207\u6362\u8fd9\u4e48\u5feb\uff1f\u79d2\u5207\uff1f<\/span><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
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\u4e00\u3001\u7aef\u53e3\u89d2\u8272\u53d8\u5316
\u00a0 \u00a01\u3001DP\uff1adesignated port:\u6307\u5b9a\u7aef\u53e3\uff0c\u8f6c\u53d1\u6570\u636e\uff0c\u53d1bpdu
\u00a0 \u00a02\u3001RP:root port:\u6839\u7aef\u53e3\uff0c\u8f6c\u53d1\u6570\u636e\uff0c\u6536bpdu
\u00a0 \u00a03\u3001\u963b\u585e\uff1a\u65e2\u4e0d\u662f\u6839\u7aef\u53e3\u53c8\u4e0d\u662f\u6307\u5b9a\u7aef\u53e3\u5c06\u4f1a\u88ab\u963b\u585e\uff0c\u4e0d\u8f6c\u53d1\u6570\u636e\uff0c\u6536bpdu
\u00a0 \u00a0 \u00a0 4\u3001AP\uff1aalternate port:\u4ee3\u66ff\u7aef\u53e3\uff1a\u4ee3\u66ffRP<\/del>\uff0c\u6536\u5230\u5bf9\u65b9\u66f4\u4f18\u7684bpdu
\u00a0 \u00a0 \u00a0 5\u3001BP\uff1abackup port\uff1a\u5907\u4efd\u7aef\u53e3\uff1a\u5907\u4efddp<\/del>\uff0c\u6536\u5230\u672c\u65b9\u66f4\u4f18\u7684bpdu
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0=====\u4e3a\u5feb\u901f\u5207\u6362\u521b\u9020\u4e86\u6761\u4ef6\u548c\u53ef\u80fd\u6027
\u00a0 \u00a0 \u00a0 6\u3001EP\uff1aedge port\uff08port fast\uff09:\u8fb9\u7f18\u7aef\u53e3\uff0c\u662f\u4e00\u79cd\u7279\u6027\uff0c\u4e0d\u662f\u7aef\u53e3\u89d2\u8272
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u7279\u6027\uff1a
\u00a0 \u00a0 \u00a0 \u00a0 \u00a01\uff09\u8df3\u8fc7listhing\u548clearing\uff0c\u4e0d\u8fdb\u884cstp\u8ba1\u7b97\uff0c\u76f4\u63a5\u8fdb\u5165\u8f6c\u53d1\u72b6\u6001
\u00a0 \u00a0 \u00a0 \u00a0 \u00a02\uff09EP\u7aef\u53e3\u4e00\u65e6\u6536\u5230bpdu\uff0c\u5931\u53bbEP\u529f\u80fd\uff0c\u53d8\u6210\u6b63\u5e38STP\u7aef\u53e3

\"\"<\/div>
\u00a0 \u00a0 \u00a0 \u00a0 \u00a03\uff09EP\u7aef\u53e3\u4e0d\u53d7\u201csync\uff08\u540c\u6b65\uff09\u201d\u7684\u5f71\u54cd
\u00a0 \u00a0 \u00a0 \u00a0 \u00a04\uff09EP\u4e0d\u4f1a\u89e6\u53d1TC\uff08\u62d3\u6251\u53d8\u66f4\u673a\u5236\uff09
\u00a0 \u00a0 \u00a0 \u00a0 \u00a05\uff09EP\u4e0d\u8f6c\u53d1TC\uff08\u62d3\u6251\u53d8\u66f4\u673a\u5236\uff09
\u00a0 \u00a0 \u00a0 \u00a0 \u00a06\uff09EP\u4e0d\u53d7TC\u5f71\u54cd<\/p>

\u4e8c\u3001\u7aef\u53e3\u72b6\u6001\uff1a<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t
\u7aef\u53e3\u72b6\u6001<\/th>STP<\/th>RSTP<\/th><\/tr><\/thead>
\u00a0<\/td>Disable
Blocking
Listening
forwarding<\/td>		Discarding
Learning
forwarding<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u4e09\u3001BPDU\u7684\u53d1\u9001\u65b9\u5f0f
\u00a0 \u00a01\u3001STP bpdu\u7684\u53d1\u9001\u65b9\u5f0f\uff1a
\u00a0 \u00a0 \u00a0 root\u6839\u4ea4\u6362\u673a\u4ea7\u751fconfiguration\uff08\u914d\u7f6eBPDU\uff09\uff0c\u7531DP\u7aef\u53e3\u53d1\u9001\u51fa\u53bb\u5176\u4ed6\u975e\u6839\u4ea4\u6362\u673a\u7684RP\u6536\u5230\u914d\u7f6eBPDU\uff0c\u518d\u7531DP\u8fdb\u884c\u8f6c\u53d1
\u00a0 \u00a0 \u00a0 \u4ea4\u6362\u673a\u6700\u591a7\u5c42\uff0cmax-age=7*2+3*2
\u00a0 \u00a02\u3001RSTP BPDU\u7684\u53d1\u9001\u65b9\u5f0f\uff1a
\u00a0 \u00a0 \u00a0 RSTP\u7684BPDU\u5728STP bpduj\u57fa\u7840\u4e0a\u8fdb\u884c\u5347\u7ea7\u4e3aRST\/MRST BPDU
\u00a0 \u00a0 \u00a0 \u5e76\u4e0d\u662f\u53ea\u80fd\u7531\u6839\u4ea7\u751f\uff0c\u6bcf\u4e2a\u4ea4\u6362\u673a\u90fd\u53ef\u4ee5\u4ea7\u751fRST\/MST BPDU
\u00a0 \u00a0 \u00a0 Max-age ==>hold = 3*2=6\u79d2
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0hold = time-factor(\u65f6\u95f4\u56e0\u5b50\u9ed8\u8ba43)*3*2=18\u79d2 \u534e\u4e3a<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u56db\u3001link-type\u94fe\u8def\u7c7b\u578b\uff08STP\u6ca1\u6709\uff09\u662fRSTP\u5feb\u901f\u5207\u6362(\u79d2\u5207)\u524d\u63d0:P2P
\u00a0 \u00a0auto\uff08default\uff09
\u00a0 \u00a0 \u00a0 p2p—————–\u6761\u4ef6—————–\u5168\u53cc\u5de5—\u6ee1\u8db3\u6761\u4ef6\u5feb\u901f\u5207=\u79d2\u5207
\u00a0 \u00a0 \u00a0 non p2p————\u6761\u4ef6—————–\u534a\u53cc\u5de5—\u6b63\u5e38\u5207\u6362=30\u79d2
\u00a0 \u00a0\u624b\u5de5\u914d\u7f6e
\u00a0 \u00a0 \u00a0 intface g0\/0\/1
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0stp point-topoint force-true —-\u5f3a\u5236\u4e3ap2p
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0stp point-to-point force-false—\u5f3a\u5236\u4e3anon p2p<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u4e94\u3001RSTP BPDU Flag\u5b57\u6bb5\u8fdb\u884c\u6269\u5c55—————\u4e3a\u540e\u9762PA\u673a\u5236\u505a\u51c6\u5907

\"\"<\/div><\/p>

\u7aef\u53e3\u72b6\u6001\u00a0 \u00a0 \u00a0\u7aef\u53e3\u89d2\u8272
Bit5\u00a0 Bit4\u00a0 \u00a0 Bit3\u00a0 Bit2
\u00a0 \u00a00\u00a0 \u00a0 \u00a0 0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0=DP discarding
\u00a0 \u00a00\u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0=DP learning
\u00a0 \u00a01\u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0=DP forwarding
\u00a0 \u00a01\u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1\u00a0 \u00a0 \u00a0 \u00a0 0\u00a0 \u00a0 \u00a0=RP forwarding<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u516d\u3001\u5feb\u901f\u5207\u6362\uff1a
\u00a0 \u00a01\u3001\u8fde\u63a5\u7ec8\u7aef\u7684\u63a5\u53e3\u9ed8\u8ba4\u7b4930\u79d2
\u00a0 \u00a0 \u00a0 EP\u53ef\u4ee5\u79d2\u5207
\u00a0 \u00a02\u3001\u76f4\u8054\u94fe\u8def\u5207\u6362\uff0cstp\u8981\u7b4930\u79d2
\u00a0 \u00a0 \u00a0 RSTP\uff0cAP\u5207RP\uff0c\u79d2\u5207
\u00a0 \u00a03\u3001\u975e\u76f4\u8054\u94fe\u8def\u6545\u969c\uff0c\u5bfc\u81f4\u672c\u4ea4\u6362\u673a\u5207\u6362\uff0c\u6807\u51c6\u7b4950\u79d2\uff0c\u534e\u4e3a30\u79d2
\u00a0 \u00a0 \u00a0 RSTP\u672c\u8eab\u65e0\u6cd5\u5224\u65ad\uff0c\u501f\u52a9P\/A\u673a\u5236\u8fdb\u884c\u5207\u6362<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u4e03\u3001P\/A\u673a\u5236\uff08\u4e3b\u52a8\u534f\u5546\uff09\uff0c\u5bf9\u6bd4STP\u88ab\u52a8\u7b49\u5f85
\u00a0 \u00a0 \u5f53\u94fe\u8def\u53d1\u751f\u53d8\u52a8\u65f6\uff0c\u4f1a\u53d1\u751f\u540c\u6b65
\u00a0 \u00a0 1\u3001\u4e3a\u4ec0\u4e48\u8981\u540c\u6b65\uff1f
\u00a0 \u00a0 \u00a0 \u00a0 \u9632\u73af
\u00a0 \u00a0 2\u3001\u4ec0\u4e48\u65f6\u5019\u89e6\u53d1\u540c\u6b65\uff1f
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u5f53P\/A\u7ed3\u675f\uff0c\u53d1\u751f\u540c\u6b65
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u9664\u975e\u662f\u76f8\u540c\u7684\u4ea4\u6362\u673a\u94fe\u8def\u4fee\u6539
\u00a0 \u00a0 3\u3001\u540c\u6b65\u7684\u5f71\u54cd\uff1f
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u672a\u8bbe\u7f6e\u7684EP\u7684\u6839\u7aef\u53e3\u4f1a\u8fdb\u884c30\u79d2\u53c2\u4e0e\u540c\u6b65\uff0c\u5982\u679c\u7ec8\u7aef\u672a\u8bbe\u7f6eEP\uff0c\u4f1a\u5f71\u54cd\u4e1a\u52a1\u3002<\/p>

PA\u7684\u573a\u666f\uff1a
\u00a0 \u00a01\u3001\u975e\u76f4\u8fde\u7684\u5207\u6362
\u00a0 \u00a02\u3001\u521d\u59cb\u5316<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

\u77e5\u8bc6\u56de\u987e\uff1a1\u3001stp\u7684\u5207\u6362\uff1a\u00a0 \u00a01\uff09\u63a5\u53e3\u7684up\/down\uff0c\u5230\u8f6c\u53d1\uff0c\u9700\u8981\u7b4930\u79d2\u00a0 \u00a0 \u00a0 discard\uff08R […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-796","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/posts\/796","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/comments?post=796"}],"version-history":[{"count":32,"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/posts\/796\/revisions"}],"predecessor-version":[{"id":899,"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/posts\/796\/revisions\/899"}],"wp:attachment":[{"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/media?parent=796"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/categories?post=796"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/asahiya.cn\/index.php\/wp-json\/wp\/v2\/tags?post=796"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}