{"id":353,"date":"2025-08-08T21:27:18","date_gmt":"2025-08-08T13:27:18","guid":{"rendered":"https:\/\/0x0.pub\/?p=353"},"modified":"2025-08-09T16:14:47","modified_gmt":"2025-08-09T08:14:47","slug":"bgp-mpls-vpn-%e8%b7%a8%e5%9f%9f%e6%96%b9%e6%a1%88c-rr%e5%8f%8d%e5%b0%84%e5%99%a8","status":"publish","type":"post","link":"https:\/\/0x0.pub\/?p=353","title":{"rendered":"BGP MPLS VPN \u8de8\u57df\u65b9\u6848C &RR\u53cd\u5c04\u5668"},"content":{"rendered":"\n

<\/p>\n\n\n\n

\u62d3\u6251\u56fe<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u9700\u6c42\uff1a\u5b9e\u73b0CE1 AR9\u7684\u79c1\u7f51\u8de8\u8d8aAS100 AS200\u5230\u8fbeAS10 R10\u79c1\u7f51\u5e26\u53cd\u5c04\u5668\u7684BGP MPLS \u96a7\u9053\u3002<\/p>\n\n\n\n

\u914d\u7f6e\u601d\u8def<\/p>\n\n\n\n

1. \u8de8\u57df\u9aa8\u5e72\u7f51AS100-R1-R2-R3-R4  AS200-R5-R6-R7-R8  IP\/ISIS\/MPLS\/\u53cd\u5c04\u5668,IBGP\u548c\u8de8\u57dfR3-R5 EBGP\u914d\u7f6e\uff0cASBR\u5230\u57df\u5185IBGP\u4fee\u6539\u4e0b\u4e00\u8df3local\u3002
2. \u6253\u901aR1-R2-R3-R5-R6-R7\u7684BGP-MPLS\u96a7\u9053,R4-R8\u5efa\u7acbvpnv4\u90bb\u5c45\u3002
  2.1 R3 R5\u95f4\u63a5\u53e3\u5f00\u542fMPLS\uff0c\u5efa\u7acbEBGP\u90bb\u5c45
  2.2 R3\u53d1\u5e03R4 lo0, R5\u53d1\u5e03R8 lo0, \u7528\u4e8eR4-R8\u901a\u8fc7\u516c\u7f51\u5efa\u7acbvpnv4\u90bb\u5c45
  2.3 R3\u53d1\u5e03R1 lo0, R5\u53d1\u5e03R7 lo0\uff0c\u7528\u4e8e\u6253\u901aR1-R7\u4e4b\u95f4\u7684BGP LSP
  2.4 R3 R5\u5206\u522b\u5efa\u7acb\u4e24\u6761route-policy P1\u548cP2\uff0cBGP\u5f00\u542f\u6807\u7b7e\u80fd\u529b
    P1\u6253MPLS\u6807\u7b7e\uff0cR3-R5\u4e4b\u95f4\u4f20\u9012\u8c03\u7528\uff0c\u5f62\u6210\u53cc\u5411BGP MPLS\u6807\u7b7e
    P2\u68c0\u6d4b\u5230\u6807\u7b7e\u5219\u518d\u6253\u4e00\u5c42\u6807\u7b7e\uff0cASBR\u4f20\u9012\u5230\u57df\u5185\u7684RR\u8c03\u7528
  2.5 R4-R1, \u548cR8-R7\u5f00\u542fBGP\u6807\u7b7e\u80fd\u529b\u3002\u5f62\u6210R1-R4-R3-R5-R8-R7\u7684MPLS\u96a7\u9053
  2.6 \u8003\u8651\u5230\u5b9e\u9645\u73af\u5883\u4e2d\u591aPE\u7684\u60c5\u51b5\uff0c\u5728R4-R8\u5efa\u7acbvpnv4\u90bb\u5c45\u3002\u4fee\u6539ebgp\u6700\u5927\u8df3\u6570\uff0c\u5173\u95edvpn-target\u7b56\u7565
  2.7 \u6570\u636e\u8f6c\u53d1\u7ecf\u8fc7\u4e86RR\u9700\u4fee\u6b63\u6700\u4f18\u8def\u5f84\uff0cR4-R1\/R8, R8-R4\/R7 vpnv4\u5bf9\u7aef\u4e0b\u4e00\u8df3\u8bbe\u7f6e\u4e0d\u53d8
3. PE\u63a5\u5165\u7aefR1\/R7\u5b9e\u4f8b\u914d\u7f6e
4. CE\u7aefR9\/R10\u914d\u7f6e<\/pre>\n\n\n\n
<\/p>\n\n\n\n
\u914d\u7f6e\u547d\u4ee4<\/p>\n\n\n\n
1. \u8de8\u57df\u9aa8\u5e72\u7f51AS100-R1-R2-R3-R4  AS200-R5-R6-R7-R8\uff0cIP\/ISIS\/MPLS\/\u53cd\u5c04\u5668,IBGP\u548c\u8de8\u57dfR3-R5 EBGP\u914d\u7f6e<\/p>\n\n\n\n
#R1 (PE1)<\/mark><\/strong>\nsys\nsysn R1\nint g0\/0\/1\nip addr 12.1.1.1 24\nint lo0 \nip addr 1.1.1.1 32\n\nisis 1 \nis-level level-2\nnetwork-entity 49.0001.0000.0000.0001.00\nint g0\/0\/1\nisis en 1\nint lo0\nisis en 1\n\nmpls lsr-id 1.1.1.1\nmpls\nmpls ldp\nint g0\/0\/1\nmpls\nmpls ldp\n\nbgp 100\nrouter-id 1.1.1.1\nundo default ipv4-unicast\npeer 4.4.4.4 as-number 100 \npeer 4.4.4.4 connect-interface Lo0\nipv4-family unicast\npeer 4.4.4.4 enable\n\n\n#R2 (P)<\/mark><\/strong>\nsys\nsysn R2\nint g0\/0\/0\nip addr 12.1.1.2 24\nint g0\/0\/1\nip addr 23.1.1.2 24\nint g0\/0\/2\nip addr 24.1.1.2 24\nint lo0 \nip addr 2.2.2.2 32\n\nisis 1 \nis-level level-2\nnetwork-entity 49.0002.0000.0000.0002.00\nint g0\/0\/0\nisis en 1\nint g0\/0\/1\nisis en 1\nint g0\/0\/2\nisis en 1\nint lo0\nisis en 1\n\nmpls lsr-id 2.2.2.2\nmpls\nmpls ldp\nint g0\/0\/0\nmpls\nmpls ldp\nint g0\/0\/1\nmpls\nmpls ldp\nint g0\/0\/2\nmpls\nmpls ldp\n\n\n#R3 (ASBR1)<\/mark><\/strong>\nsys\nsysn R3\nint g0\/0\/0\nip addr 23.1.1.3 24\nint g0\/0\/1\nip addr 35.1.1.3 24\nint lo0 \nip addr 3.3.3.3 32\n\nisis 1 \nis-level level-2\nnetwork-entity 49.0003.0000.0000.0003.00\nint g0\/0\/0\nisis en 1\nint lo0\nisis en 1\n\nmpls lsr-id 3.3.3.3\nmpls\nmpls ldp\nint g0\/0\/0\nmpls\nmpls ldp\n\nbgp 100\nrouter-id 3.3.3.3\nundo default ipv4-unicast\npeer 4.4.4.4 as-number 100 \npeer 4.4.4.4 connect-interface LoopBack0\nipv4-family unicast\npeer 4.4.4.4 enable\npeer 4.4.4.4 next-hop-local\n\n\n#R4 (RR1)<\/mark><\/strong>\nsys\nsysn R4\nint g0\/0\/0\nip addr 24.1.1.4 24\nint lo0\nip addr 4.4.4.4 32\n\nisis 1 \nis-level level-2\nnetwork-entity 49.0004.0000.0000.0004.00\nint g0\/0\/0\nisis en 1\nint lo0\nisis en 1\n\nmpls lsr-id 4.4.4.4\nmpls\nmpls ldp\nint g0\/0\/0\nmpls\nmpls ldp\n\nbgp 100\nrouter-id 4.4.4.4\nundo default ipv4-unicast\npeer 1.1.1.1 as-number 100 \npeer 1.1.1.1 connect-interface LoopBack0\npeer 3.3.3.3 as-number 100 \npeer 3.3.3.3 connect-interface LoopBack0\nipv4-family unicast\npeer 1.1.1.1 enable\npeer 1.1.1.1 reflect-client\npeer 3.3.3.3 enable\npeer 3.3.3.3 reflect-client\n\n\n#R5 (ASBR2)<\/mark><\/strong>\nsys\nsysn R5\nint g0\/0\/0\nip addr 56.1.1.5 24\nint g0\/0\/1\nip addr 35.1.1.5 24\nint lo0\nip addr 5.5.5.5 32\n\nisis 1 \nis-level level-2\nnetwork-entity 49.0005.0000.0000.0005.00\nint g0\/0\/0\nisis en 1\nint lo0\nisis en 1\n\nmpls lsr-id 5.5.5.5\nmpls\nmpls ldp\nint g0\/0\/0\nmpls\nmpls ldp\n\nbgp 200\nrouter-id 5.5.5.5\nundo default ipv4-unicast\npeer 8.8.8.8 as-number 200 \npeer 8.8.8.8 connect-interface LoopBack0\nipv4-family unicast\npeer 8.8.8.8 enable\npeer 8.8.8.8 next-hop-local \n\n\n#R6 (P)<\/mark><\/strong>\nsys\nsysn R6\nint g0\/0\/0\nip addr 56.1.1.6 24\nint g0\/0\/1\nip addr 67.1.1.6 24\nint g0\/0\/2\nip addr 68.1.1.6 24\nint lo0\nip addr 6.6.6.6 32\n\nisis 1 \nis-level level-2\nnetwork-entity 49.0006.0000.0000.0006.00\nint g0\/0\/0\nisis en 1\nint g0\/0\/1\nisis en 1\nint g0\/0\/2\nisis en 1\nint lo0\nisis en 1\n\nmpls lsr-id 6.6.6.6\nmpls\nmpls ldp\nint g0\/0\/0\nmpls\nmpls ldp\nint g0\/0\/1\nmpls\nmpls ldp\nint g0\/0\/2\nmpls\nmpls ldp\n\n\n#R7 (PE2)<\/mark><\/strong>\nsys\nsysn R7\nint g0\/0\/0\nip addr 67.1.1.7 24\nint lo0 \nip addr 7.7.7.7 32\n\nisis 1 \nis-level level-2\nnetwork-entity 49.0007.0000.0000.0007.00\nint g0\/0\/0\nisis en 1\nint lo0\nisis en 1\n\nmpls lsr-id 7.7.7.7\nmpls\nmpls ldp\nint g0\/0\/0\nmpls\nmpls ldp\n\nbgp 200\nrouter-id 7.7.7.7\nundo default ipv4-unicast\npeer 8.8.8.8 as-number 200 \npeer 8.8.8.8 connect-interface LoopBack0\nipv4-family unicast\npeer 8.8.8.8 enable\n\n\n#R8 (RR2)<\/mark><\/strong>\nsys\nsysn R8\nint g0\/0\/0\nip addr 68.1.1.8 24\nint lo0\nip addr 8.8.8.8 32\n\nisis 1 \nis-level level-2\nnetwork-entity 49.0008.0000.0000.0008.00\nint g0\/0\/0\nisis en 1\nint lo0\nisis en 1\n\nmpls lsr-id 8.8.8.8\nmpls\nmpls ldp\nint g0\/0\/0\nmpls\nmpls ldp\n\nbgp 200\nrouter-id 8.8.8.8\nundo default ipv4-unicast\npeer 5.5.5.5 as-number 200 \npeer 5.5.5.5 connect-interface LoopBack0\npeer 7.7.7.7 as-number 200 \npeer 7.7.7.7 connect-interface LoopBack0\nipv4-family unicast\npeer 5.5.5.5 enable\npeer 5.5.5.5 reflect-client\npeer 7.7.7.7 enable\npeer 7.7.7.7 reflect-client<\/code><\/pre>\n\n\n\n
2.\u6253\u901aR1-R2-R3-R5-R6-R7\u7684BGP-MPLS\u96a7\u9053,R4-R8\u5efa\u7acbvpnv4\u90bb\u5c45\u3002<\/p>\n\n\n\n
#R3 (ASBR1)<\/mark><\/strong>\nint g0\/0\/1\nmpls\n\nroute-policy P1 permit node 10 \napply mpls-label\nroute-policy P2 permit node 10 \nif-match mpls-label \napply mpls-label\n\nbgp 100\npeer 35.1.1.5 as-number 200\nipv4-family unicast\npeer 35.1.1.5 enable\nnetwork 1.1.1.1 32\nnetwork 4.4.4.4 32\npeer 35.1.1.5 route-policy P1 export\npeer 35.1.1.5 label-route-capability\npeer 4.4.4.4 route-policy P2 export\npeer 4.4.4.4 label-route-capability\n\n\n#R5 (ASBR2)<\/mark><\/strong>\nint g0\/0\/1\nmpls\n\nroute-policy P1 permit node 10 \napply mpls-label\nroute-policy P2 permit node 10 \nif-match mpls-label \napply mpls-label\n\nbgp 200\npeer 35.1.1.3 as-number 100 \nipv4-family unicast\npeer 35.1.1.3 enable\nnetwork 7.7.7.7 32\nnetwork 8.8.8.8 32\npeer 8.8.8.8 route-policy P2 export\npeer 8.8.8.8 label-route-capability\npeer 35.1.1.3 route-policy P1 export\npeer 35.1.1.3 label-route-capability\n\n\n#R1 (PE1)<\/mark><\/strong>\nbgp 100\nipv4-family unicast\npeer 4.4.4.4 label-route-capability\nipv4-family vpnv4\npeer 4.4.4.4 enable\n\n\n#R4 (RR1)<\/mark><\/strong>\nbgp 100\nipv4-family unicast\npeer 8.8.8.8 as-number 200\npeer 8.8.8.8 ebgp-max-hop 255\npeer 8.8.8.8 connect-interface LoopBack0\npeer 1.1.1.1 label-route-capability\npeer 3.3.3.3 label-route-capability\nipv4-family vpnv4\nundo policy vpn-target\npeer 1.1.1.1 enable\npeer 1.1.1.1 next-hop-invariable\npeer 8.8.8.8 enable\npeer 8.8.8.8 next-hop-invariable\n\n\n#R7 (PE2)<\/mark><\/strong>\nbgp 200\nipv4-family unicast\npeer 8.8.8.8 label-route-capability\nipv4-family vpnv4\npeer 8.8.8.8 enable\n\n\n#R8 (RR2)<\/mark><\/strong>\nbgp 200\nipv4-family unicast\npeer 4.4.4.4 as-number 100 \npeer 4.4.4.4 ebgp-max-hop 255 \npeer 4.4.4.4 connect-interface LoopBack0\npeer 5.5.5.5 label-route-capability\npeer 7.7.7.7 label-route-capability\nipv4-family vpnv4\nundo policy vpn-target\npeer 4.4.4.4 enable\npeer 4.4.4.4 next-hop-invariable \npeer 7.7.7.7 enable\npeer 7.7.7.7 next-hop-invariable<\/code><\/pre>\n\n\n\n
3. PE\u7aef\u63a5\u5165\u5b9e\u4f8b\u914d\u7f6e<\/p>\n\n\n\n
#R1 (PE1)<\/mark><\/strong>\nip vpn-instance 9\nroute-distinguisher 9:9\nvpn-target 9:10 export-extcommunity\nvpn-target 10:9 import-extcommunity\ninterface GigabitEthernet0\/0\/0\nip binding vpn-instance 9\nip address 19.1.1.1 255.255.255.0\n\nbgp 100\nipv4-family vpn-instance 9 \npeer 19.1.1.9 as-number 9 \n\n\n#R7 (PE2)<\/mark><\/strong>\nip vpn-instance 10\nroute-distinguisher 10:10\nvpn-target 10:9 export-extcommunity\nvpn-target 9:10 import-extcommunity\ninterface GigabitEthernet0\/0\/1\nip binding vpn-instance 10\nip address 70.1.1.7 255.255.255.0\n\nbgp 200\n ipv4-family vpn-instance 10 \n peer 70.1.1.10 as-number 10<\/code><\/pre>\n\n\n\n
4.CE\u63a5\u5165\u7aef\u914d\u7f6e<\/p>\n\n\n\n
#R9 (CE1)<\/mark><\/strong>\nsys\nsysn R9\nint g0\/0\/0\nip addr 19.1.1.9 24\nint lo0\nip addr 9.9.9.9 32\n\nbgp 9\nrouter-id 9.9.9.9\npeer 19.1.1.1 as-number 100 \nipv4-family unicast\nnetwork 9.9.9.9 255.255.255.255 \npeer 19.1.1.1 enable\n\n\n#R10 (CE2)<\/mark><\/strong>\nsys\nsysn R10\nint g0\/0\/0\nip addr 70.1.1.10 24\nint lo0\nip addr 10.10.10.10 32\n\nbgp 10\nrouter-id 10.10.10.10\npeer 70.1.1.7 as-number 200\nipv4-family unicast\nnetwork 10.10.10.10 255.255.255.255 \npeer 70.1.1.7 enable<\/code><\/pre>\n\n\n\n
\u7ed3\u679c\u9a8c\u8bc1<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"
\u62d3\u6251\u56fe \u9700\u6c42\uff1a\u5b9e\u73b0CE1 AR9\u7684\u79c1\u7f51\u8de8\u8d8aAS100 AS200\u5230\u8fbeAS10 R10\u79c1\u7f51\u5e26\u53cd\u5c04\u5668\u7684BGP MP […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[56],"class_list":["post-353","post","type-post","status-publish","format-standard","hentry","category-ensp","tag-mplsc"],"_links":{"self":[{"href":"https:\/\/0x0.pub\/index.php?rest_route=\/wp\/v2\/posts\/353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/0x0.pub\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/0x0.pub\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/0x0.pub\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/0x0.pub\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=353"}],"version-history":[{"count":5,"href":"https:\/\/0x0.pub\/index.php?rest_route=\/wp\/v2\/posts\/353\/revisions"}],"predecessor-version":[{"id":362,"href":"https:\/\/0x0.pub\/index.php?rest_route=\/wp\/v2\/posts\/353\/revisions\/362"}],"wp:attachment":[{"href":"https:\/\/0x0.pub\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/0x0.pub\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/0x0.pub\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}