z-notes

实战指定DR和BDR

1.前期准备

AR1

<Huawei>sys
[Huawei]user-interface console 0
[Huawei-ui-console0]authentication-mode aaa    
[Huawei-ui-console0]aaa
[Huawei-aaa]local-user zhao password cipher 123456
[Huawei-aaa]local-user zhao privilege level 3
[Huawei-aaa]local-user wong password cipher 123456
[Huawei-aaa]local-user wong privilege level 3
[Huawei-aaa]local-user wong service-type ssh
[Huawei-aaa]quit
[Huawei]ssh user wong authentication-type password
[Huawei]stelnet server enable
[Huawei]user-interface vty 0 4
[Huawei-ui-vty0-4]authentication-mode aaa
[Huawei-ui-vty0-4]protocol inbound ssh
[Huawei-ui-vty0-4]return
<Huawei>save

<Huawei>sys
[Huawei]interface GigabitEthernet 0/0/0
[Huawei-GigabitEthernet0/0/0]ip address 172.16.0.1 24
[Huawei-GigabitEthernet0/0/0]quit
[Huawei]interface GigabitEthernet 0/0/1
[Huawei-GigabitEthernet0/0/1]ip address 192.168.0.1 24
[Huawei-GigabitEthernet0/0/1]return
<Huawei>save

AR2

AR3

AR5

AR4

2.配置OSPF

AR1

[Huawei]ospf 1 router-id 1.1.1.1
[Huawei-ospf-1]are    
[Huawei-ospf-1]area 0
[Huawei-ospf-1-area-0.0.0.0]network 192.168.0.0 0.0.255.255

AR2

[Huawei]ospf 1 router-id 1.1.1.2
[Huawei-ospf-1]area 0
[Huawei-ospf-1-area-0.0.0.0]network 192.168.0.0 0.0.255.255

AR3

[Huawei]ospf 1 router-id 1.1.1.3
[Huawei-ospf-1]area 0
[Huawei-ospf-1-area-0.0.0.0]network 192.168.0.0 0.0.255.255

AR4

[Huawei]ospf 1 router-id 1.1.1.4
[Huawei-ospf-1]area 0
[Huawei-ospf-1-area-0.0.0.0]network 192.168.0.0 0.0.255.255

AR5

[Huawei]ospf 1 router-id 1.1.1.5
[Huawei-ospf-1]area 0
[Huawei-ospf-1-area-0.0.0.0]network 192.168.0.0 0.0.255.255

检查

系统启动之初，DR和BDR具有一定的不确定性，所以会看到DR落在192.168.0.1，而正常的情况下应该时落在AR5，router-di 1.1.1.5（那个ID大指定那个）。

3.指定节点位DR和BDR

<Huawei>reset ospf 1 process 

DR是192.168.0.2，BDR是192.168.0.4

AR1

[Huawei-GigabitEthernet0/0/1]ospf dr-priority 10

AR2

[Huawei-GigabitEthernet0/0/1]ospf dr-priority 5

AR3，AR4，AR5全部设置0

[Huawei-GigabitEthernet0/0/0]ospf dr-priority 0

AR1，AR2重启OSPF进程

<Huawei>reset ospf 1 process