{"id":1580,"date":"2011-09-01T01:55:29","date_gmt":"2011-08-31T17:55:29","guid":{"rendered":"http:\/\/www.slyar.com\/blog\/?p=1580"},"modified":"2022-07-03T15:51:39","modified_gmt":"2022-07-03T22:51:39","slug":"ccnp-labs-bgp-router-reflector","status":"publish","type":"post","link":"http:\/\/www.slyar.com\/blog\/ccnp-labs-bgp-router-reflector.html","title":{"rendered":"CCNP\u5b9e\u9a8c:BGP\u8def\u7531\u9ed1\u6d1e\u4e4b\u8def\u7531\u53cd\u5c04\u5668(Router Reflector)\u89e3\u51b3"},"content":{"rendered":"<p>\u6587\u7ae0\u4f5c\u8005\uff1a<span style=\"color: #0000ff;\">\u59dc\u5357(Slyar) <\/span>\u6587\u7ae0\u6765\u6e90\uff1aSlyar Home (<a title=\"Slyar\" href=\"http:\/\/www.slyar.com\" target=\"_blank\" rel=\"noopener\">www.slyar.com<\/a>) \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff0c\u8c22\u8c22\u5408\u4f5c\u3002<\/p>\n<p><span style=\"color: #0000ff;\">\u3010\u5b9e\u9a8c\u73af\u5883\u3011<\/span><\/p>\n<p>C3640-IK9O3S-M Version 12.4(10)<\/p>\n<p><span style=\"color: #0000ff;\">\u3010\u5b9e\u9a8c\u76ee\u7684\u3011<\/span><\/p>\n<p>\u91c7\u7528\u8def\u7531\u53cd\u5c04\u5668(Router Reflector)\u89e3\u51b3\u7531IBGP\u6c34\u5e73\u5206\u5272\u5bfc\u81f4\u7684BGP\u8def\u7531\u9ed1\u6d1e\u95ee\u9898<\/p>\n<p><span style=\"color: #0000ff;\">\u3010\u5b9e\u9a8c\u62d3\u6251\u3011<\/span><\/p>\n<p><a href=\"http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2011\/09\/2011-09-01_010730.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1581\" title=\"\u8def\u7531\u53cd\u5c04\u5668\" src=\"http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2011\/09\/2011-09-01_010730.png\" alt=\"\" width=\"657\" height=\"330\" srcset=\"http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2011\/09\/2011-09-01_010730.png 657w, http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2011\/09\/2011-09-01_010730-150x75.png 150w, http:\/\/www.slyar.com\/blog\/wp-content\/uploads\/2011\/09\/2011-09-01_010730-300x151.png 300w\" sizes=\"auto, (max-width: 657px) 100vw, 657px\" \/><\/a><\/p>\n<p><span style=\"color: #0000ff;\">\u3010\u5b9e\u9a8c\u63cf\u8ff0\u3011<\/span><\/p>\n<p>R1\u3001R2\u3001R4\u3001R5\u8dd1BGP\u534f\u8bae\uff0cR2\u3001R3\u3001R4\u8dd1OSPF\u534f\u8bae\u3002\u76ee\u6807\u662f\u4f7f1.1.1.1&lt;-&gt;5.5.5.5\u53ef\u4ee5\u4e92\u76f8\u8bbf\u95ee<\/p>\n<p>IBGP\u90bb\u5c45\u5173\u7cfb\u91c7\u7528\u56de\u73af\u53e3\u8fdb\u884c\u5efa\u7acb<\/p>\n<p>R1&lt;-&gt;R2\u3001R4&lt;-&gt;R5\u4e4b\u95f4\u4f7f\u7528\u76f4\u8fde\u63a5\u53e3\u5efa\u7acbEBGP\u5173\u7cfb<\/p>\n<p>\u6570\u636e\u5c42\u9762\u7684BGP\u8def\u7531\u9ed1\u6d1e\u95ee\u9898\uff1a\u7531\u4e8eR3\u6ca1\u6709\u8dd1BGP\uff0c\u56e0\u6b64R2\u548cR4\u5747\u4e0d\u4f1a\u5c06\u8def\u7531\u6761\u76ee\u4f20\u7ed9R3\uff0c\u56e0\u6b64R3\u6ca1\u67091.1.1.1\u548c5.5.5.5\u7684\u8def\u7531\uff0c\u5bfc\u81f4\u8def\u7531\u9ed1\u6d1e\u3002\u5982\u679c\u5728R3\u4e0a\u8dd1BGP\uff0c\u4e0eR2\u548cR4\u5efa\u7acbIBGP\u5173\u7cfb\uff0c\u53c8\u4f1a\u56e0\u4e3aIBGP\u6c34\u5e73\u5206\u5272\u5bfc\u81f4R2\u3001R4\u8def\u7531\u5b66\u4e60\u4e0d\u5b8c\u6574\u3002<\/p>\n<p>\u89e3\u51b3\u65b9\u6cd5\uff1a\u5229\u7528\u8def\u7531\u53cd\u5c04\u5668\uff0c\u5c06R3\u4f5c\u4e3a\u53cd\u5c04\u5668(RR)\uff0c\u5176\u4f59IBGP\u8def\u7531\u5668\u4f5c\u4e3a\u5ba2\u6237\u7aef(C)\uff0c\u8def\u7531\u53cd\u5c04\u5668\u548c\u5176\u5ba2\u6237\u7aef\u5171\u540c\u7ec4\u6210\u8def\u7531\u53cd\u5c04\u7c07\uff0c\u5ba2\u6237\u7aef\u53ea\u9700\u8981\u4e0e\u8def\u7531\u53cd\u5c04\u5668\u5efa\u7acb\u90bb\u5c45\u5373\u53ef\uff0c\u4e0d\u9700\u8981\u4e0e\u6bcf\u53f0IBGP\u8def\u7531\u5668\u5efa\u7acb\u90bb\u5c45\u3002<\/p>\n<p>\u8def\u7531\u53cd\u5c04\u5668\u7684\u89c4\u5219\uff1a<\/p>\n<p>1\u3001RR\u4eceEBGP\u6536\u5230\u7684\u8def\u7531\uff0c\u4f1a\u53cd\u5c04\u7ed9\u5ba2\u6237\u7aef\u548c\u975e\u5ba2\u6237\u7aef\uff1b<\/p>\n<p>2\u3001\u4ece\u5ba2\u6237\u7aef\u6536\u5230\u7684\u8def\u7531\uff0c\u4f1a\u53cd\u5c04\u7ed9\u5ba2\u6237\u7aef\u3001\u975e\u5ba2\u6237\u7aef\u53caEBGP\u90bb\u5c45\uff1b<\/p>\n<p>3\u3001\u4ece\u975e\u5ba2\u6237\u7aef\u6536\u5230\u7684\u8def\u7531\uff0c\u53ea\u4f1a\u53cd\u5c04\u7ed9\u5ba2\u6237\u7aef\u548cEBGP\u90bb\u5c45\uff0c\u4e0d\u4f1a\u53cd\u5c04\u7ed9\u5176\u4ed6\u975e\u5ba2\u6237\u7aef\u3002<\/p>\n<p><!--more--><span style=\"color: #0000ff;\">\u3010\u5b9e\u9a8c\u6b65\u9aa4\u3011<\/span><\/p>\n<p><span style=\"color: #0000ff;\">1\u3001R1\u57fa\u672c\u914d\u7f6e\uff0c\u7aef\u53e3:<\/span><\/p>\n<p>!<br \/>\ninterface Loopback0<br \/>\nip address 1.1.1.1 255.255.255.0<br \/>\n!<br \/>\ninterface Serial0\/0<br \/>\nip address 12.0.0.1 255.255.255.0<br \/>\nclock rate 64000<br \/>\n!<\/p>\n<p><span style=\"color: #0000ff;\">2\u3001R2\u57fa\u672c\u914d\u7f6e\uff0c\u7aef\u53e3\uff0cOSPF:<\/span><\/p>\n<p>!<br \/>\ninterface Loopback0<br \/>\nip address 2.2.2.2 255.255.255.0<br \/>\n!<br \/>\ninterface Serial0\/0<br \/>\nip address 12.0.0.2 255.255.255.0<br \/>\n!<br \/>\ninterface Serial0\/1<br \/>\nip address 23.0.0.1 255.255.255.0<br \/>\nclock rate 64000<br \/>\n!<br \/>\nrouter ospf 110<br \/>\nrouter-id 2.2.2.2<br \/>\nnetwork 2.2.2.0 0.0.0.255 area 0<br \/>\nnetwork 23.0.0.1 0.0.0.0 area 0<br \/>\n!<\/p>\n<p><span style=\"color: #0000ff;\">3\u3001R3\u57fa\u672c\u914d\u7f6e\uff0c\u7aef\u53e3\uff0cOSPF:<\/span><\/p>\n<p>!<br \/>\ninterface Loopback0<br \/>\nip address 3.3.3.3 255.255.255.0<br \/>\n!<br \/>\ninterface Serial0\/0<br \/>\nip address 34.0.0.1 255.255.255.0<br \/>\nclock rate 64000<br \/>\n!<br \/>\ninterface Serial0\/1<br \/>\nip address 23.0.0.2 255.255.255.0<br \/>\n!<br \/>\nrouter ospf 110<br \/>\nrouter-id 3.3.3.3<br \/>\nnetwork 3.3.3.0 0.0.0.255 area 0<br \/>\nnetwork 23.0.0.2 0.0.0.0 area 0<br \/>\nnetwork 34.0.0.1 0.0.0.0 area 0<br \/>\n!<\/p>\n<p><span style=\"color: #0000ff;\">4\u3001R4\u57fa\u672c\u914d\u7f6e\uff0c\u7aef\u53e3\uff0cOSPF:<\/span><\/p>\n<p>!<br \/>\ninterface Loopback0<br \/>\nip address 4.4.4.4 255.255.255.0<br \/>\n!<br \/>\ninterface Serial0\/0<br \/>\nip address 34.0.0.2 255.255.255.0<br \/>\n!<br \/>\ninterface Serial0\/1<br \/>\nip address 45.0.0.1 255.255.255.0<br \/>\nclock rate 64000<br \/>\n!<br \/>\nrouter ospf 110<br \/>\nrouter-id 4.4.4.4<br \/>\nnetwork 4.4.4.0 0.0.0.255 area 0<br \/>\nnetwork 34.0.0.2 0.0.0.0 area 0<br \/>\n!<\/p>\n<p><span style=\"color: #0000ff;\">5\u3001R5\u57fa\u672c\u914d\u7f6e\uff0c\u7aef\u53e3:<\/span><\/p>\n<p>!<br \/>\ninterface Loopback0<br \/>\nip address 5.5.5.5 255.255.255.0<br \/>\n!<br \/>\ninterface Serial0\/1<br \/>\nip address 45.0.0.2 255.255.255.0<br \/>\n!<\/p>\n<p><span style=\"color: #0000ff;\">6\u3001\u914d\u7f6eR1\u4e0eR2\u4e4b\u95f4\u7684EBGP<\/span><\/p>\n<p>\/\/R1\u914d\u7f6eAS 1<br \/>\nrouter bgp 1<br \/>\nno synchronization<br \/>\nbgp router-id 1.1.1.1<br \/>\nnetwork 1.1.1.0 mask 255.255.255.0<br \/>\nneighbor 12.0.0.2 remote-as 3<br \/>\nno auto-summary<\/p>\n<p>\/\/R2\u914d\u7f6eAS 3<br \/>\nrouter bgp 3<br \/>\nno synchronization<br \/>\nbgp router-id 2.2.2.2<br \/>\nneighbor 12.0.0.1 remote-as 1<br \/>\nno auto-summary<\/p>\n<p><span style=\"color: #0000ff;\">7\u3001\u914d\u7f6eR4\u4e0eR5\u4e4b\u95f4\u7684EBGP<\/span><\/p>\n<p>\/\/R4\u914d\u7f6eAS 3<br \/>\nrouter bgp 3<br \/>\nno synchronization<br \/>\nbgp router-id 4.4.4.4<br \/>\nneighbor 45.0.0.2 remote-as 5<br \/>\nno auto-summary<\/p>\n<p>\/\/R5\u914d\u7f6eAS 5<br \/>\nrouter bgp 5<br \/>\nno synchronization<br \/>\nbgp router-id 5.5.5.5<br \/>\nnetwork 5.5.5.0 mask 255.255.255.0<br \/>\nneighbor 45.0.0.1 remote-as 3<br \/>\nno auto-summary<\/p>\n<p><span style=\"color: #0000ff;\">8\u3001\u4f7f\u7528\u56de\u73af\u63a5\u53e3\u914d\u7f6eR2\u3001R3\u3001R4\u4e4b\u95f4\u7684IBGP\u5173\u7cfb<\/span><\/p>\n<p>\/\/R3\u914d\u7f6e<br \/>\nrouter bgp 3<br \/>\nno synchronization<br \/>\nbgp router-id 3.3.3.3<br \/>\nneighbor 2.2.2.2 remote-as 3<br \/>\nneighbor 2.2.2.2 update-source Loopback0<br \/>\nneighbor 4.4.4.4 remote-as 3<br \/>\nneighbor 4.4.4.4 update-source Loopback0<br \/>\nno auto-summary<\/p>\n<p>\/\/R2\u914d\u7f6e<br \/>\nrouter bgp 3<br \/>\nneighbor 3.3.3.3 remote-as 3<br \/>\nneighbor 3.3.3.3 update-source Loopback0<br \/>\nnei 3.3.3.3 next-hop-self<\/p>\n<p>\/\/R4\u914d\u7f6e<br \/>\nrouter bgp 3<br \/>\nneighbor 3.3.3.3 remote-as 3<br \/>\nneighbor 3.3.3.3 update-source Loopback0<br \/>\nnei 3.3.3.3 next-hop-self<\/p>\n<p><span style=\"color: #0000ff;\">9\u3001\u5728R3\u4e0a\u5f00\u542f\u8def\u7531\u53cd\u5c04\u5668\uff0c\u6307\u5b9a\u5ba2\u6237\u7aef<\/span><\/p>\n<p>router bgp 3<br \/>\n<span style=\"color: #ff0000;\">neighbor 2.2.2.2 route-reflector-client<\/span><br \/>\n<span style=\"color: #ff0000;\"> neighbor 4.4.4.4 route-reflector-client<\/span><\/p>\n<p><span style=\"color: #0000ff;\">10\u3001\u67e5\u770bR3\u7684\u8def\u7531\u8868<\/span><\/p>\n<p>R3#sh ip bgp<br \/>\nBGP table version is 3, local router ID is 3.3.3.3<br \/>\nNetwork\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Next Hop\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Metric LocPrf Weight Path<br \/>\n*&gt;i1.1.1.0\/24\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2.2.2.2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0 100\u00a0\u00a0\u00a0\u00a0\u00a0 0 1 i<br \/>\n*&gt;i5.5.5.0\/24\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 4.4.4.4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0 100\u00a0\u00a0\u00a0\u00a0\u00a0 0 5 i<\/p>\n<p><span style=\"color: #0000ff;\">11\u3001\u9a8c\u8bc1R1\u4e0eR5\u56de\u73af\u53e3\u8fde\u901a\u6027<\/span><\/p>\n<p><span style=\"color: #ff0000;\">R1#ping 5.5.5.5 so 1.1.1.1<\/span><br \/>\nSending 5, 100-byte ICMP Echos to 5.5.5.5, timeout is 2 seconds:<br \/>\nPacket sent with a source address of 1.1.1.1<br \/>\n!!!!!<br \/>\nSuccess rate is 100 percent (5\/5), round-trip min\/avg\/max = 188\/325\/496 ms<\/p>\n<p><span style=\"color: #0000ff;\">12\u3001\u5728R2\u4e0a\u67e5\u770b\u53cd\u5c04\u8def\u7531\u6761\u76ee5.5.5.0\/24<\/span><\/p>\n<p>R2#sh ip bgp 5.5.5.0\/24<br \/>\nBGP routing table entry for 5.5.5.0\/24, version 3<br \/>\nPaths: (1 available, best #1, table Default-IP-Routing-Table)<\/p>\n<p><span style=\"color: #ff0000;\">4.4.4.4 (metric 129) from 3.3.3.3 (3.3.3.3)<\/span><br \/>\nOrigin IGP, metric 0, localpref 100, valid, internal, best<br \/>\n<span style=\"color: #ff0000;\">Originator: 4.4.4.4, Cluster list: 3.3.3.3<\/span><\/p>\n<p><span style=\"color: #0000ff;\">13\u3001\u5728R4\u4e0a\u67e5\u770b\u53cd\u5c04\u8def\u7531\u6761\u76ee1.1.1.0\/24<\/span><\/p>\n<p>R4#sh ip bgp 1.1.1.0\/24<br \/>\nBGP routing table entry for 1.1.1.0\/24, version 3<br \/>\nPaths: (1 available, best #1, table Default-IP-Routing-Table)<\/p>\n<p><span style=\"color: #ff0000;\">2.2.2.2 (metric 129) from 3.3.3.3 (3.3.3.3)<\/span><br \/>\nOrigin IGP, metric 0, localpref 100, valid, internal, best<br \/>\n<span style=\"color: #ff0000;\">Originator: 2.2.2.2, Cluster list: 3.3.3.3<\/span><\/p>\n<p><span style=\"color: #0000ff;\">14\u3001\u8bc4\u4ef7<\/span><\/p>\n<p><span style=\"color: #ff0000;\">\u8def\u7531\u53cd\u5c04\u5668\u76f8\u5bf9\u4e8e\u90bb\u5c45\u5168\u4e92\u8054\u6765\u8bf4\uff0c\u7b80\u5316\u4e86\u914d\u7f6e\u548c\u6570\u91cf\uff0c\u56e0\u4e3aIBGP\u90bb\u5c45\u5173\u7cfb\u53ea\u9700\u8981\u5728\u5ba2\u6237\u7aef\u4e0eRR\u4e4b\u95f4\u5efa\u7acb\u5373\u53ef\u3002<\/span><\/p>\n<p>\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1a<a href=\"http:\/\/www.slyar.com\/blog\">Slyar Home<\/a> &raquo; <a href=\"http:\/\/www.slyar.com\/blog\/ccnp-labs-bgp-router-reflector.html\">CCNP\u5b9e\u9a8c:BGP\u8def\u7531\u9ed1\u6d1e\u4e4b\u8def\u7531\u53cd\u5c04\u5668(Router Reflector)\u89e3\u51b3<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u4f5c\u8005\uff1a\u59dc\u5357(Slyar) \u6587\u7ae0\u6765\u6e90\uff1aSlyar Home (www.slyar.com) \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff0c\u8c22\u8c22\u5408\u4f5c\u3002 \u3010\u5b9e\u9a8c\u73af\u5883\u3011 C3640-IK9O3S-M Version 12.4(10) \u3010\u5b9e\u9a8c\u76ee\u7684\u3011 \u91c7\u7528\u8def\u7531\u53cd\u5c04\u5668(Router Refle 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