路由器配置——廣播多路訪問鏈路上的OSPF

1、實驗目的：做廣播形式的OSPF，瞭解DR與BDR之間的鏈路關係

2、拓撲圖：

 

3、具體步驟配置

（1）R1路由器配置

enable
configure terminal
hostname R1
interface l0
ip address 1.1.1.1 255.255.255.0
exit
interface g0/0
ip address 192.168.1.1 255.255.255.0
no shutdown
exit
router ospf 1
router-id 1.1.1.1
network 1.1.1.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.255 area 0
end

（2）R2路由器配置

enable
configure terminal
hostname R2
interface l0
ip address 2.2.2.2 255.255.255.0
no shutdown
exit
interface g0/0
ip address 192.168.1.2 255.255.255.0
no shutdown
exit
router ospf 1
router-id 2.2.2.2
network 2.2.2.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.255 area 0
end

（3）R3路由器配置

enable
configure terminal
hostname R3
interface l0
ip address 3.3.3.3 255.255.255.0
no shutdown
exit
interface g0/0
ip address 192.168.1.3 255.255.255.0
no shutdown
exit
router ospf 1
router-id 3.3.3.3
network 3.3.3.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.255 area 0
end

（4）R4路由器配置

enable
configure terminal
hostname R4
interface l0
ip address 4.4.4.4 255.255.255.0
no shutdown
exit
interface g0/0
ip address 192.168.1.4 255.255.255.0
no shutdown
exit
router ospf 1
router-id 4.4.4.4
network 4.4.4.0 0.0.0.255 area 0
network 192.168.1.0 0.0.0.255 area 0
end

 

4、驗證測試

（1）查看R1的OSPF鄰居信息

此時R1是DR，R2是DBR

（2）端口R1，查看R2的OSPF鄰居信息

此時R2是DR，R4因爲開機時間比R3快因此R4是BDR