0x8 HCNP-R&S IS-IS作业（华为eNSP）

要求:

如图所示，客户网络所有路由器路由协议要求启用IS-IS，使全网路由可达。

全部IS-IS进程号统一为100

R1引入直连链路，要求R5访问Area 49.0001走最优路径。

根据上述描述，进行正确配置，使网络路由达到客户需求。

拓扑结构

路由器配置

1、各路由器端口、回环口IP配置

AR1

sys
[Huawei]sysname AR1
[AR1]interface g0/0/0
[AR1-GigabitEthernet0/0/0]ip address 4.4.4.2 24
[AR1-LoopBack0]inte l 1
[AR1-LoopBack1]ip add 192.168.1.1 24
[AR1-LoopBack1]inte l 2
[AR1-LoopBack2]ip add 192.168.2.1 24
[AR1-LoopBack2]inte l 3
[AR1-LoopBack3]ip add 192.168.3.1 24

AR2

sys
[Huawei]sysname AR2
[AR2]interface g0/0/0
[AR2-GigabitEthernet0/0/0]ip add 2.2.2.2 24
[AR2-GigabitEthernet0/0/0]qu
[AR2]interface Serial 4/0/0
[AR2-Serial4/0/0]ip add 3.3.3.2 24
[AR2-Serial4/0/0]qu
[AR2]interface g0/0/1
[AR2-GigabitEthernet0/0/1]ip address 4.4.4.1 24

AR3

sys
[Huaweisys AR3	
[AR3]interface g0/0/0
[AR3-GigabitEthernet0/0/0]ip add 1.1.1.2 24
[AR3-GigabitEthernet0/0/0]interface g0/0/1
[AR3-GigabitEthernet0/0/1]ip add 2.2.2.1 24

AR4

sys
[huawei]sys AR4
[AR4]interface g0/0/0
[AR4-GigabitEthernet0/0/0]ip add 1.1.1.3 24
[AR4-GigabitEthernet0/0/0]qu
[AR4]interface ser4/0/0
[AR4-Serial4/0/0]ip add 3.3.3.1 24

AR5

sys
[Huawei]sys AR5
[AR5]interface g0/0/0
[AR5-GigabitEthernet0/0/0]ip address 1.1.1.1 24

2、配置ISIS

AR1

[AR1]isis 100    //启用isis进程
[AR1-isis-100]network-entity 49.0001.0000.0000.0001.00 //
[AR1-isis-100]is-level level-2 //指定路由器isis角色为骨干路由器

AR2

[AR2]isis 100
[AR2-isis-100]network-entity 49.0001.0000.0000.0002.00
[AR2-isis-100]is-level level-2

AR3

[AR3]isis 100
[Huawei-isis-100]network-entity 49.0002.0000.0000.0003.00

 AR4

[AR4]isis 100
[AR4-isis-100]network-entity 49.0002.0000.0000.0004.00

AR5

[AR5]isis 100
[AR5-isis-100]network-entity 49.0002.0000.0000.0005.00
[AR5-isis-100]is-level level-1

3、接口启用ISIS    isis enable 100

AR1 

[AR1]inte g0/0/0
[AR1-GigabitEthernet0/0/0]isis enable 100

AR2

[AR2]inte g0/0/0
[AR2-GigabitEthernet0/0/0]isis 100
[AR2-GigabitEthernet0/0/0]interface g0/0/1
[AR2-GigabitEthernet0/0/1]isis enable 100
[AR2-GigabitEthernet0/0/1]inte s4/0/0
[AR2-Serial4/0/0]isis 100

AR3

[AR3]interface g0/0/0	
[AR3-GigabitEthernet0/0/0]isis enable 100
[AR3-GigabitEthernet0/0/0]interface g0/0/1
[AR3-GigabitEthernet0/0/1]isis enable 100

AR4

[AR4]inter g0/0/0
[AR4-GigabitEthernet0/0/0]isis enable 100
[AR4-GigabitEthernet0/0/0]inter s4/0/0
[AR4-Serial4/0/0]isis enable 100

AR5

[AR5]interface g0/0/0
[AR5-GigabitEthernet0/0/0]isis enable 100

4、AR1 ISIS引入直连回环口

[AR1]isis 100
[AR1-isis-100]import-route direct 

5、AR3/AR4 把 level-2 路由引入 level-1 （路由渗透）

AR3 

[AR3]isis 100
[AR3-isis-100]import-route isis level-2 into level-1 

AR4

[AR4]isis 100
[AR4-isis-100]import-route isis level-2 into level-1 

测试

AR1 ping AR5

AR5 ping AR1 Lookback 1