一.实验拓扑与要求二.实验思路1.划分IP地址并正确配置IP地址2.在AS2内部正确配置动态路由协议3.配置BGP1正确建立BGP邻居配置BGP联邦和路由反射器2发布路由进行路由汇总4.配置GRE隧道实现业务网段能互通三.实验配置1.划分IP地址并正确配置IP地址[AR1]int gi 0/0/0[AR1-GigabitEthernet0/0/0]ip ad 12.1.1.1 24[AR1-GigabitEthernet0/0/0]int l0[AR1-LoopBack0]ip ad 1.1.1.1 32[AR1-LoopBack0]int l1[AR1-LoopBack1]ip ad 192.168.1.1 24[AR2]int gi 0/0/0[AR2-GigabitEthernet0/0/0]ip ad 12.1.1.2 24[AR2-GigabitEthernet0/0/1]ip ad 172.16.0.1 30[AR2-GigabitEthernet0/0/1]int gi 0/0/2[AR2-GigabitEthernet0/0/2]ip ad 172.16.0.21 30[AR2-GigabitEthernet0/0/2]int l0[AR2-LoopBack0]ip ad 2.2.2.2 32[AR3]int gi 0/0/0[AR3-GigabitEthernet0/0/0]ip ad 172.16.0.2 30[AR3-GigabitEthernet0/0/0]int gi 0/0/1[AR3-GigabitEthernet0/0/1]ip ad 172.16.0.5 30[AR3-LoopBack0]ip ad 3.3.3.3 32[AR3-LoopBack0]int l1[AR3-LoopBack1]ip ad 172.16.3.3 24[AR3-LoopBack1]ospf network-type broadcast //模拟业务网段[AR4]int gi 0/0/0[AR4-GigabitEthernet0/0/0]ip ad 172.16.0.6 30[AR4-GigabitEthernet0/0/0]int gi 0/0/1[AR4-GigabitEthernet0/0/1]ip ad 172.16.0.9 30[AR4-GigabitEthernet0/0/1]int l0[AR4-LoopBack0]ip ad 4.4.4.4 32[AR4-LoopBack0]int l1[AR4-LoopBack1]ip ad 172.16.4.4 24[AR4-LoopBack1]ospf net broadcast[AR5]int gi 0/0/0[AR5-GigabitEthernet0/0/0]ip ad 172.16.0.22 30[AR5-GigabitEthernet0/0/0]int gi 0/0/1[AR5-GigabitEthernet0/0/1]ip ad 172.16.0.17 30[AR5-GigabitEthernet0/0/1]int l0[AR5-LoopBack0]ip ad 5.5.5.5 32[AR5-LoopBack0]int l1[AR5-LoopBack1]ip ad 172.16.5.5 24[AR5-LoopBack1]ospf net b[AR5-LoopBack1]ospf net broadcast[AR6]int gi 0/0/0[AR6-GigabitEthernet0/0/0]ip ad 172.16.0.18 30[AR6-GigabitEthernet0/0/0]int gi 0/0/1[AR6-GigabitEthernet0/0/1]ip ad 172.16.0.13 30[AR6-GigabitEthernet0/0/1]int l0[AR6-LoopBack0]ip ad 6.6.6.6 32[AR6-LoopBack0]int l1[AR6-LoopBack1]ip ad 172.16.6.6 24[AR6-LoopBack1]ospf net b[AR7-GigabitEthernet0/0/0]ip ad 172.16.0.14 30[AR7-GigabitEthernet0/0/0]int gi 0/0/1[AR7-GigabitEthernet0/0/1]ip ad 172.16.0.10 30[AR7-GigabitEthernet0/0/1]int l0[AR7-LoopBack0]ip ad 7.7.7.7 32[AR7-LoopBack0]int l1[AR7-LoopBack1]ip ad 172.16.7.7 24[AR7-LoopBack1]ospf net b[AR7-LoopBack1]int gi 0/0/2[AR7-GigabitEthernet0/0/2]ip ad 34.1.1.7 24[AR8]int gi 0/0/0[AR8-GigabitEthernet0/0/0]ip ad 34.1.1.8 24[AR8-GigabitEthernet0/0/0]int l0[AR8-LoopBack0]ip ad 8.8.8.8 32[AR8-LoopBack0]int l1[AR8-LoopBack1]ip ad 192.168.2.8 24[AR8-LoopBack1]ospf ne b2.在AS2内部正确配置动态路由协议[AR2]ospf 1 rou[AR2]ospf 1 router-id 2.2.2.2[AR2-ospf-1]area 0[AR2-ospf-1-area-0.0.0.0]net 172.16.0.0 0.0.255.255[AR2-ospf-1-area-0.0.0.0]net 2.2.2.2 0.0.0.0[AR3]ospf 1 rou[AR3]ospf 1 router-id 3.3.3.3[AR3-ospf-1]area 0[AR3-ospf-1-area-0.0.0.0]net 3.3.3.3 0.0.0.0[AR3-ospf-1-area-0.0.0.0]net 172.16.0.0 0.0.255.255[AR4]ospf 1 rou[AR4]ospf 1 router-id 4.4.4.4[AR4-ospf-1]area 0[AR4-ospf-1-area-0.0.0.0]net 4.4.4.4 0.0.0.0[AR4-ospf-1-area-0.0.0.0]net 172.16.0.0 0.0.255.255[AR5]ospf 1 router-id 5.5.5.5[AR5-ospf-1]area 0[AR5-ospf-1-area-0.0.0.0]net 5.5.5.5 0.0.0.0[AR5-ospf-1-area-0.0.0.0]net 172.16.0.0 0.0.255.255[AR6]ospf 1 rou 6.6.6.6[AR6-ospf-1]area 0[AR6-ospf-1-area-0.0.0.0]net 6.6.6.6 0.0.0.0[AR6-ospf-1-area-0.0.0.0]net 172.16.0.0 0.0.255.255[AR7]ospf 1 rou 7.7.7.7[AR7-ospf-1]area 0[AR7-ospf-1-area-0.0.0.0]net 7.7.7.7 0.0.0.0[AR7-ospf-1-area-0.0.0.0]net 172.16.0.0 0.0.255.2553.配置BGP1正确建立BGP邻居配置BGP联邦和路由反射器[AR1]bgp 1[AR1-bgp]peer 12.1.1.2 as 2[AR2]bgp 64512[AR2-bgp]confe[AR2-bgp]confederation id 2[AR2-bgp]confed[AR2-bgp]confederation peer[AR2-bgp]confederation peer-as 64513[AR2-bgp]peer 12.1.1.1 as 1[AR2-bgp]peer 3.3.3.3 as 64512[AR2-bgp]peer 5.5.5.5 as 64513[AR2-bgp]peer 3.3.3.3 next-hop-local[AR2-bgp]peer 5.5.5.5 next-hop-local[AR2-bgp]peer 3.3.3.3 connect-interface l0[AR2-bgp]peer 5.5.5.5 connect-interface l0[AR2-bgp]peer 5.5.5.5 ebgp-max-hop[AR3]bgp 64512[AR3-bgp]confederation id 2[AR3-bgp]peer 2.2.2.2 as 64512[AR3-bgp]peer 2.2.2.2 re[AR3-bgp]peer 2.2.2.2 reflect-client[AR3-bgp]peer 4.4.4.4 as 64512[AR3-bgp]peer 4.4.4.4 re[AR3-bgp]peer 4.4.4.4 reflect-client[AR3-bgp]peer 2.2.2.2 connect-interface l0[AR3-bgp]peer 4.4.4.4 connect-interface l0[AR4]bgp 64512[AR4-bgp]con[AR4-bgp]confederation id 2[AR4-bgp]con[AR4-bgp]confederation p[AR4-bgp]confederation peer-as 64513[AR4-bgp]peer 3.3.3.3 as 64512[AR4-bgp]peer 7.7.7.7 as 64513[AR4-bgp]peer 3.3.3.3 connect-interface l0[AR4-bgp]peer 7.7.7.7 connect-interface l0[AR4-bgp]peer 7.7.7.7 ebgp-max-hop[AR5]bgp 64513[AR5-bgp]con[AR5-bgp]confederation id 2[AR5-bgp]con[AR5-bgp]confederation pe[AR5-bgp]confederation peer-as 64512[AR5-bgp]peer 2.2.2.2 as 64512[AR5-bgp]peer 6.6.6.6 as 64513[AR5-bgp]peer 2.2.2.2 connect-interface l0[AR5-bgp]peer 6.6.6.6 connect-interface l0[AR5-bgp]peer 2.2.2.2 ebgp-max-hop[AR6]bgp 64513[AR6-bgp]con id 2[AR6-bgp]peer 5.5.5.5 as 64513[AR6-bgp]peer 5.5.5.5 con[AR6-bgp]peer 5.5.5.5 connect-interface l0[AR6-bgp]peer 7.7.7.7 as 64513[AR6-bgp]peer 7.7.7.7 con[AR6-bgp]peer 7.7.7.7 connect-interface l0[AR6-bgp]peer 5.5.5.5 reflect-client[AR6-bgp]peer 7.7.7.7 reflect-client[AR7]bgp 64513[AR7-bgp] confederation id 2[AR7-bgp] confederation peer-as 64512[AR7-bgp] peer 4.4.4.4 as-number 64512[AR7-bgp] peer 4.4.4.4 ebgp-max-hop 255[AR7-bgp] peer 4.4.4.4 connect-interface LoopBack0[AR7-bgp] peer 6.6.6.6 as-number 64513[AR7-bgp] peer 6.6.6.6 connect-interface LoopBack0[AR7-bgp]peer 4.4.4.4 next-hop-local[AR7-bgp]peer 6.6.6.6.next-hop-local[AR7-bgp]peer 34.1.1.8 as 3[AR8]bgp 3[AR8-bgp]peer 34.1.1.7 as 22发布路由进行路由汇总[AR2]ip route-static 172.16.0.0 21 null 0[AR2-bgp]network 172.16.0.0 21 //更极致的精简了BGP表还无需担心明细抑制和环路问题[AR7]ip route-static 172.16.0.0 21 null 0[AR7]bgp 64513[AR7-bgp]net 172.16.0.0 214.配置GRE隧道实现业务网段能互通[AR8-bgp]net 8.8.8.8 32[AR1-bgp]net 1.1.1.1 32[AR1]int Tunnel 0/0/0[AR1-Tunnel0/0/0]ip ad 10.1.1.1 24[AR1-Tunnel0/0/0]tu[AR1-Tunnel0/0/0]tunnel-protocol g[AR1-Tunnel0/0/0]tunnel-protocol gre[AR1-Tunnel0/0/0]source 1.1.1.1[AR1-Tunnel0/0/0]de[AR1-Tunnel0/0/0]description[AR1-Tunnel0/0/0]destination 8.8.8.8[AR8-Tunnel0/0/0]ip ad 10.1.1.8 24[AR8-Tunnel0/0/0]tu[AR8-Tunnel0/0/0]tunnel-protocol gre[AR8-Tunnel0/0/0]sou[AR8-Tunnel0/0/0]source 8.8.8.8[AR8-Tunnel0/0/0]destination 1.1.1.1[AR1]ip route-static 192.168.2.0 24 Tunnel 0/0/0AR8]ip route-static 192.168.1.0 24 Tunnel 0/0/0