【网络实验】-BGP-EBGP的基本配置

实验拓扑实验要求使用两种方式建立不同AS号的BGP邻居不同AS号路由器之间建立的邻居称为EBGP邻居实验目的熟悉使用物理口和环回口建立邻居的方式IP地址规划路由器接口IP地址AR1G0/0/012.1.1.1/24AR1Loopback 01.1.1.1/24AR2G0/0/012.1.1.2/24AR2G0/0/123.1.1.2/24AR2Loopback 02.2.2.2/24AR3G0/0/123.1.1.3/24AR3Loopback 03.3.3.3/24实验配置物理接口方式AR1:Huaweisys Enter system view,returnuser view with CtrlZ.[Huawei]sys R1[R1]uninen Info: Information center is disabled.[R1]int g0/0/0[R1-GigabitEthernet0/0/0]ipadd12.1.1.124[R1-GigabitEthernet0/0/0]int loo0[R1-LoopBack0]ipadd1.1.1.124[R1-LoopBack0]bgp10[R1-bgp]peer12.1.1.2 as20[R1-bgp]network12.1.1.024[R1-bgp]network1.1.1.024AR2:Huaweisys Enter system view,returnuser view with CtrlZ.[Huawei]sys R2[R2]uninen Info: Information center is disabled.[R2]int g0/0/1[R2-GigabitEthernet0/0/1]ipadd12.1.1.224[R2-GigabitEthernet0/0/1]int g0/0/0[R2-GigabitEthernet0/0/0]ipadd23.1.1.224[R2-GigabitEthernet0/0/0]int loo0[R2-LoopBack0]ipadd2.2.2.224[R2-LoopBack0]bgp20[R2-bgp]peer12.1.1.1 as10[R2-bgp]peer23.1.1.3 as30[R2-bgp]net12.1.1.024[R2-bgp]net23.1.1.024[R2-bgp]net2.2.2.024AR3:Huaweisys Enter system view,returnuser view with CtrlZ.[Huawei]sys R3[R3]uninen Info: Information center is disabled.[R3]int g0/0/1[R3-GigabitEthernet0/0/1]ipadd23.1.1.324[R3-GigabitEthernet0/0/1]int loo0[R3-LoopBack0]ipadd3.3.3.324[R3-LoopBack0]bgp30[R3-bgp]peer23.1.1.2 as20[R3-bgp]net23.1.1.024[R3-bgp]net3.3.3.024环回口方式重启路由器恢复初始配置AR1:Huaweisys Enter system view,returnuser view with CtrlZ.[Huawei]sys R1[R1]uninen[R1]ip route-static2.2.2.02412.1.1.2 Info: Information center is disabled.[R1]int g0/0/0[R1-GigabitEthernet0/0/0]ipadd12.1.1.124[R1-GigabitEthernet0/0/0]int loo0[R1-LoopBack0]ipadd1.1.1.124[R1-LoopBack0]bgp10[R1-bgp]peer2.2.2.2 as-number20[R1-bgp]peer2.2.2.2 connect-interface LoopBack0[R1-bgp]peer2.2.2.2 ebgp-max-hop[R1-bgp]network12.1.1.024[R1-bgp]network1.1.1.024AR2:Huaweisys Enter system view,returnuser view with CtrlZ.[Huawei]sys R2[R2]uninen Info: Information center is disabled.[R2]ip route-static1.1.1.02412.1.1.1[R2]ip route-static3.3.3.02423.1.1.3[R2]int g0/0/1[R2-GigabitEthernet0/0/1]ipadd12.1.1.224[R2-GigabitEthernet0/0/1]int g0/0/0[R2-GigabitEthernet0/0/0]ipadd23.1.1.224[R2-GigabitEthernet0/0/0]int loo0[R2-LoopBack0]ipadd2.2.2.224[R2-LoopBack0]bgp20[R2-bgp]peer1.1.1.1 as-number10[R2-bgp]peer1.1.1.1 connect-interface LoopBack0[R2-bgp]peer1.1.1.1 ebgp-max-hop[R2-bgp]peer3.3.3.3 as-number30[R2-bgp]peer3.3.3.3 connect-interface LoopBack0[R2-bgp]peer3.3.3.3 ebgp-max-hop[R2-bgp]net2.2.2.024[R2-bgp]net23.1.1.024[R2-bgp]net12.1.1.024AR3:Huaweisys Enter system view,returnuser view with CtrlZ.[Huawei]sys R3[R3]uninen Info: Information center is disabled.[R3]ip route-static2.2.2.02423.1.1.2[R3]int g0/0/1[R3-GigabitEthernet0/0/1]ipadd23.1.1.324[R3-GigabitEthernet0/0/1]int loo0[R3-LoopBack0]ipadd3.3.3.324[R3-LoopBack0]bgp30[R3-bgp]peer2.2.2.2 as-number20[R3-bgp]peer2.2.2.2 connect-interface LoopBack0[R3-bgp]peer2.2.2.2 ebgp-max-hop[R3-bgp]net23.1.1.024[R3-bgp]net3.3.3.024验证通过display bgp peer命令查看BGP邻居关系以AR2为例可以看到状态为Established证明EBGP邻居已经建立完成。通过display bgp routing-table查看BGP路由情况可以看到已经学习到了其他区域发送过来的路由条目。注意事项无实验结论EBGP既可以通过物理口建立邻居也可以通过环回口建立邻居