BGP第一天实验

1、配置ip

[r1]interface g0/0/0

[r1-GigabitEthernet0/0/0]ip address 192.16.12.1 24

[r1]interface LoopBack 0

[r1-LoopBack0]ip address 1.1.1.1 24

其余路由器均类似于r1

2、配置OSPF

仅R2,R3,R4配置OSPF

[r4]ospf 1 router-id 4.4.4.4

[r4-ospf-1]area 0

[r4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0

修改接口类型为广播型

[r4]interface LoopBack 0

[r4-LoopBack0]ospf network-type broadcast

3、建立邻居关系
建立BGP邻居关系

[r1]bgp

[r1-bgp] router-id 1.1.1.1

[r1-bgp]peer 192.16.12.2 as-number 2

建立IBGP邻居关系
[r2]bgp 2

[r2-bgp]peer 3.3.3.3 as-number 2

多链路的EBGP邻居关系

[r4]ip route-static 5.5.5.0 24 192.16.45.2

[r4]ip route-static 5.5.5.0 24 192.16.54.2

[r5]ip route-static 4.4.4.0 24 192.16.45.1

[r5]ip route-static 4.4.4.0 24 192.16.54.1

4、宣告路由
R1到R5都宣告

[r1]bgp 1

[r1-bgp]network 192.16.1.0 24

[r1-bgp]q

5、修改下一跳

[r2]bgp 2

[r2-bgp]peer 3.3.3.3 next-hop-local