BGP邻居建立

拓扑分析1.配置IP给每个设备配置两个环回地址一个用来BGP邻居的建立掩码32一个用来模拟用户网段掩码24并修改接口类 型为broadcast。路由器之间的互联网段自行设定。2.IGP协议在每个AS内部执行IGP协议此处使用OSPFAS200中需要建立OSPFAS500中r9和r10需要建立OSPF。配置完后看OSPF邻居是否建立好。3.BGP邻居建立所有设备都执行BGP进行全连接打破IBGP水平分割的问题。配置完查看BGP邻居是否建立好。4.路由传递只传递模拟用户网段的路由信息。使用network或者重发布路由策略进行路由传递。5.同时拥有EBGP和IBGP邻居的设备需要将下一跳改为自己的环回。配置1.配置IPr1[r1]int l0[r1-LoopBack0]ip ad 1.1.1.1 32[r1-LoopBack0]int l1[r1-LoopBack1]ip ad 192.168.1.1 24[r1-LoopBack1]ospf n b[r1]int g0/0/0[r1-GigabitEthernet0/0/0]ip ad 12.0.0.1 30[r1-GigabitEthernet0/0/0]int g0/0/1[r1-GigabitEthernet0/0/1]ip ad 13.0.0.1 30r2[r2]int l0[r2-LoopBack0]ip ad 2.2.2.2 32[r2-LoopBack0]int l1[r2-LoopBack1]ip ad 192.168.2.1 24[r2-LoopBack1]ospf n b[r2]int g0/0/0[r2-GigabitEthernet0/0/0]ip ad 12.0.0.2 30[r2-GigabitEthernet0/0/0]int g0/0/1[r2-GigabitEthernet0/0/1]ip ad 24.0.0.1 30r3[r3]int l0[r3-LoopBack0]ip ad 3.3.3.3 32[r3-LoopBack0]int l1[r3-LoopBack1]ip ad 192.168.3.1 24[r3-LoopBack1]ospf n b[r3]int g0/0/0[r3-GigabitEthernet0/0/0]ip ad 13.0.0.2 30[r3-GigabitEthernet0/0/0]int g0/0/1[r3-GigabitEthernet0/0/1]ip ad 34.0.0.1 30[r3-GigabitEthernet0/0/1]int g0/0/2[r3-GigabitEthernet0/0/2]ip ad 35.0.0.1 30r4[r4]int l0[r4-LoopBack0]ip ad 4.4.4.4 32[r4-LoopBack0]int l1[r4-LoopBack1]ip ad 192.168.4.1 24[r4-LoopBack1]ospf n b[r4]int g0/0/0[r4-GigabitEthernet0/0/0]ip ad 24.0.0.2 30[r4-GigabitEthernet0/0/0]int g0/0/01[r4-GigabitEthernet0/0/1]ip ad 34.0.0.2 30[r4-GigabitEthernet0/0/1]int g0/0/2[r4-GigabitEthernet0/0/2]ip ad 45.0.0.1 30[r4-GigabitEthernet0/0/2]int g1/0/0[r4-GigabitEthernet1/0/0]ip ad 47.0.0.1 30r5[r5]int l0[r5-LoopBack0]ip ad 5.5.5.5 32[r5-LoopBack0]int l1[r5-LoopBack1]ip ad 192.168.5.1 24[r5-LoopBack1]ospf n b[r5]int g0/0/0[r5-GigabitEthernet0/0/0]ip ad 45.0.0.2 30r6[r6]int l0[r6-LoopBack0]ip ad 6.6.6.6 32[r6-LoopBack0]int l1[r6-LoopBack1]ip ad 192.168.6.1 24[r6-LoopBack1]ospf n b[r6]int g0/0/0[r6-GigabitEthernet0/0/0]ip ad 35.0.0.2 30[r6-GigabitEthernet0/0/0]int g0/0/1[r6-GigabitEthernet0/0/1]ip ad 67.0.0.1 30[r6-GigabitEthernet0/0/1]int g0/0/2[r6-GigabitEthernet0/0/2]ip ad 69.0.0.1 30r7[r7]int l0[r7-LoopBack0]ip ad 7.7.7.7 32[r7-LoopBack0]int l1[r7-LoopBack1]ip ad 192.168.7.1 24[r7-LoopBack1]ospf n b[r7]int g0/00/0[r7-GigabitEthernet0/0/0]ip ad 47.0.0.2 30[r7-GigabitEthernet0/0/0]int g0/00/1[r7-GigabitEthernet0/0/1]ip ad 67.0.0.2 30[r7-GigabitEthernet0/0/1]int g1/0/0[r7-GigabitEthernet1/0/0]ip ad 107.0.0.1 30[r7-GigabitEthernet1/0/0]int g0/0/2[r7-GigabitEthernet0/0/2]ip ad 78.0.0.1 30r8[r8]int l0[r8-LoopBack0]ip ad 8.8.8.8 32[r8-LoopBack0]int l1[r8-LoopBack1]ip ad 192.168.8.1 24[r8-LoopBack1]ospf n b[r8]int g0/0/0[r8-GigabitEthernet0/0/0]ip ad 78.0.0.2 30r9[r9]int l0[r9-LoopBack0]ip ad 9.9.9.9 32[r9-LoopBack0]int l1[r9-LoopBack1]ip ad 192.168.9.1 24[r9-LoopBack1]ospf n b[r9]int g0/0/0[r9-GigabitEthernet0/0/0]ip ad 69.0.0.2 30[r9-GigabitEthernet0/0/0]int g0/0/1[r9-GigabitEthernet0/0/1]ip ad 109.0.0.1 30r10[r10]int l0[r10-LoopBack0]ip ad 10.10.10.10 32[r10-LoopBack0]int l1[r10-LoopBack1]ip ad 192.168.10.1 24[r10-LoopBack1]ospf n b[r10]int g0/0/0[r10-GigabitEthernet0/0/0]ip ad 107.0.0.2 30[r10-GigabitEthernet0/0/0]int g0/0/1[r10-GigabitEthernet0/0/1]ip ad 109.0.0.2 302.IGP配置r2[r2]ospf 1 r 2.2.2.2[r2-ospf-1]area 0[r2-ospf-1-area-0.0.0.0]net 2.2.2.2 0.0.0.0[r2-ospf-1-area-0.0.0.0]net 192.168.2.1 0.0.0.0[r2-ospf-1-area-0.0.0.0]net 24.0.0.1 0.0.0.0r3[r3]ospf 1 r 3.3.3.3[r3-ospf-1]area 0[r3-ospf-1-area-0.0.0.0]net 3.3.3.3 0.0.0.0[r3-ospf-1-area-0.0.0.0]net 192.168.3.1 0.0.0.0[r3-ospf-1-area-0.0.0.0]net 34.0.0.1 0.0.0.0r4[r4]ospf 1 r 4.4.4.4[r4-ospf-1]area 0[r4-ospf-1-area-0.0.0.0]net 4.4.4.4 0.0.0.0[r4-ospf-1-area-0.0.0.0]net 192.168.4.1 0.0.0.0[r4-ospf-1-area-0.0.0.0]net 24.0.0.2 0.0.0.0[r4-ospf-1-area-0.0.0.0]net 34.0.0.2 0.0.0.0r9[r9]ospf 1 r 9.9.9.9[r9-ospf-1]area 0[r9-ospf-1-area-0.0.0.0]net 9.9.9.9 0.0.0.0[r9-ospf-1-area-0.0.0.0]net 192.168.9.1 0.00.0.0[r9-ospf-1-area-0.0.0.0]net 109.0.0.1 0.0.0.0r10[r10]ospf 1 r 10.10.10.10[r10-ospf-1]area 0[r10-ospf-1-area-0.0.0.0]net 10.10.10.10 0.0.0.0[r10-ospf-1-area-0.0.0.0]net 192.168.10.1 0.0.0.0[r10-ospf-1-area-0.0.0.0]net 109.0.0.2 0.0.0.0检查邻居建立关系3.BGP邻居建立r1[r1]bgp 100[r1-bgp]r 1.1.1.1[r1-bgp]peer 12.0.0.2 as-number 200[r1-bgp]peer 13.0.0.2 as-number 200r2[r2]bgp 200[r2-bgp]r 2.2.2.2[r2-bgp]peer 12.0.0.1 as-number 100[r2-bgp]peer 4.4.4.4 as-number 200[r2-bgp]peer 3.3.3.3 as-number 200[r2-bgp]peer 4.4.4.4 connect-interface l0[r2-bgp]peer 3.3.3.3 connect-interface l0r3[r3]bgp 200[r3-bgp]r 3.3.3.3[r3-bgp]peer 13.0.0.1 as-number 100[r3-bgp]peer 2.2.2.2 as-number 200[r3-bgp]peer 4.4.4.4 as-number 200[r3-bgp]peer 2.2.2.2 connect-interface l0[r3-bgp]peer 4.4.4.4 connect-interface l0[r3-bgp]peer 35.0.0.2 as-number 300r4[r4]bgp 200[r4-bgp]r 4.4.4.4[r4-bgp]peer 2.2.2.2 as-number 200[r4-bgp]peer 3.3.3.3 as-number 200[r4-bgp]peer 2.2.2.2 connect-interface l0[r4-bgp]peer 3.3.3.3 connect-interface l0[r4-bgp]peer 47.0.0.2 as-number 400[r4-bgp]peer 45.0.0.2 as-number 300r5[r5]bgp 300[r5-bgp]r 5.5.5.5[r5-bgp]peer 45.0.0.1 as-number 200r6[r6]bgp 300[r6-bgp]r 6.6.6.6[r6-bgp]peer 35.0.0.1 as-number 200[r6-bgp]peer 67.0.0.2 as-number 400[r6-bgp]peer 69.0.0.2 as-number 500r7[r7]bgp 400[r7-bgp]r 7.7.7.7[r7-bgp]peer 47.0.0.1 as-number 200[r7-bgp]peer 67.0.0.1 as-number 300[r7-bgp]peer 107.0.0.2 as-number 500[r7-bgp]peer 78.0.0.2 as-number 500r8[r8]bgp 500[r8-bgp]r 8.8.8.8[r8-bgp]peer 78.0.0.1 as-number 400r9[r9]bgp 500[r9-bgp]r 9.9.9.9[r9-bgp]peer 69.0.0.1 as-number 300[r9-bgp]peer 10.10.10.10 as-number 500[r9-bgp]peer 10.10.10.10 connect-interface l0r10[r10]bgp 500[r10-bgp]r 10.10.10.10[r10-bgp]peer 107.0.0.1 as-number 400[r10-bgp]peer 9.9.9.9 as-number 500[r10-bgp]peer 9.9.9.9 connect-interface l0查看邻居是否建立好4.路由发布r1[r1-bgp]net 192.168.1.1 24r2[r2]ip ip-prefix aa permit 192.168.0.0 21 greater-equal 24 less-equal 24[r2]route-policy aa permit node 10[r2-route-policy]if-match ip-prefix aa[r2-bgp]import-route direct route-policy aa[r2-bgp]import-route ospf 1 route-policy aar3[r3]route-policy aa permit node 10[r3-route-policy]if-match ip-prefix aa[r3-route-policy]ip ip-prefix aa index 10 permit 192.168.0.0 21 greater-equal 24less-equal 24[r3]bgp 200[r3-bgp]import-route direct route-policy aa[r3-bgp]import-route ospf 1 route-policy aar4[r4]route-policy aa permit node 10[r4-route-policy]if-match ip-prefix aa[r4-route-policy]ip ip-prefix aa index 10 permit 192.168.0.0 21 greater-equal 24less-equal 24[r4]bgp 200[r4-bgp]import-route direct route-policy aa[r4-bgp]import-route ospf 1 route-policy aar5[r5-bgp]net 192.168.5.1 24r6[r6-bgp]net 192.168.6.1 24r7[r7-bgp]net 192.168.7.1 24r8[r8-bgp]net 192.168.8.1 24r9[r9-bgp]net 192.168.9.1 24[r9-bgp]net 192.168.10.1 24r10[r10-bgp]net 192.168.10.1 24[r10-bgp]net 192.168.9.1 245.同时有IBGP和EBGP邻居的发送路由时要将下一跳改为自己r2[r2-bgp]peer 3.3.3.3 next-hop-local[r2-bgp]peer 4.4.4.4 next-hop-localr3[r3-bgp]peer 2.2.2.2 next-hop-local[r3-bgp]peer 4.4.4.4 next-hop-localr4[r4-bgp]peer 2.2.2.2 next-hop-local[r4-bgp]peer 3.3.3.3 next-hop-localr9[r9-bgp]peer 10.10.10.10 next-hop-localr10[r10-bgp]peer 9.9.9.9 next-hop-localr10[r10-bgp]peer 107.0.0.1 allow-as-loop 2r9[r9-bgp]peer 69.0.0.1 allow-as-loop 2r8[r8-bgp]peer 78.0.0.1 allow-as-loop 2r6[r6-bgp]peer 35.0.0.1 allow-as-loop 2r5[r5-bgp]peer 45.0.0.1 allow-as-loop 2