37、BGP配置之基础配置实验

一、实验拓扑

二、实验规则

1、R1、R2、R3上分别添加静态路由。保证互相的还回接口可达。

2、配置基本BGP，注入直连，保证全网互通。

三、实验过程

1、R1的配置

sysname R1
#
undo info-center enable
#
interface GigabitEthernet0/0/0
 ip address 192.168.12.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 ip address 192.168.1.1 255.255.255.0
#
interface GigabitEthernet0/0/2
 ip address 192.168.21.1 255.255.255.0
#
interface LoopBack0
 ip address 1.1.1.1 255.255.255.0
#
bgp 100
 router-id 1.1.1.1
 peer 2.2.2.2 as-number 100
 peer 2.2.2.2 connect-interface LoopBack0
 #
 ipv4-family unicast
  undo synchronization
  import-route direct
  peer 2.2.2.2 enable
#
ip route-static 2.2.2.0 255.255.255.0 192.168.12.2
ip route-static 2.2.2.0 255.255.255.0 192.168.21.2

2、R2的配置

sysname R2
#
undo info-center enable
#
interface GigabitEthernet0/0/0
 ip address 192.168.12.2 255.255.255.0
#
interface GigabitEthernet0/0/1
 ip address 192.168.23.2 255.255.255.0
#
interface GigabitEthernet0/0/2
 ip address 192.168.21.2 255.255.255.0
#
interface GigabitEthernet0/0/3
 ip address 192.168.32.2 255.255.255.0
#
interface LoopBack0
 ip address 2.2.2.2 255.255.255.0
#
bgp 100
 router-id 2.2.2.2
 peer 1.1.1.1 as-number 100
 peer 1.1.1.1 connect-interface LoopBack0
 peer 192.168.23.3 as-number 200
 peer 192.168.32.3 as-number 200
 #
 ipv4-family unicast
  undo synchronization
  import-route direct
  peer 1.1.1.1 enable
  peer 192.168.23.3 enable
  peer 192.168.32.3 enable
#
ip route-static 1.1.1.0 255.255.255.0 192.168.12.1
ip route-static 1.1.1.0 255.255.255.0 192.168.21.1
ip route-static 3.3.3.0 255.255.255.0 192.168.23.3
ip route-static 3.3.3.0 255.255.255.0 192.168.32.3

3、R3的配置

sysname R3
#
undo info-center enable
#
interface GigabitEthernet0/0/0
 ip address 192.168.2.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 ip address 192.168.23.3 255.255.255.0
#
interface GigabitEthernet0/0/2
#
interface GigabitEthernet0/0/3
 ip address 192.168.32.3 255.255.255.0
#
interface LoopBack0
 ip address 3.3.3.3 255.255.255.0
#
bgp 200
 router-id 3.3.3.3
 peer 192.168.23.2 as-number 100
 peer 192.168.32.2 as-number 100
 #
 ipv4-family unicast
  undo synchronization
  import-route direct
  peer 192.168.23.2 enable
  peer 192.168.32.2 enable
#
ip route-static 2.2.2.0 255.255.255.0 192.168.23.2
ip route-static 2.2.2.0 255.255.255.0 192.168.32.2

四、实验结果

1、使用PC1测试与PC2的连通性

2、在R1上查看路由表信息

3、在R2上查看BGP邻居关系