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系统/网络安全

OSPF多区域的配置

2023-03-28 星期二 / 0 评论 / 0 点赞 / 91 阅读 / 10781 字

OSPF多区域的配置OSPF划分区域的好处是什么？-增加网络的扩展性-降低路由器负载-快速收敛案例4：OSPF多区域的配置4.1 问题如图配置IP地址，设置OSPF区域确保R1和R2之间不选举DR，R

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OSPF多区域的配置

OSPF划分区域的好处是什么？
-增加网络的扩展性
-降低路由器负载
-快速收敛

案例4：OSPF多区域的配置
4.1 问题
如图配置IP地址，设置OSPF区域
确保R1和R2之间不选举DR，R5为区域56的DR，为区域0的BDR
验证R2和R5的角色为 ABR
确保PC-1和 PC-2可以互通

配置思路：
1.配置终端设备
2.配置网络设备
@R1 设置ip 设置ospf router-id 1.1.1.1 区域12 宣称网段12.0
@R2 设置ip 设置ospf router-id 2.2.2.2 区域12 宣称网段12.0 区域0宣称网段23.0
@R3 设置ip 设置ospf router-id 3.3.3.3 区域0 宣称网段23.0 34.0
@R4 设置ip 设置ospf router-id 4.4.4.4 区域0 宣称网段34.0 45.0
@R5 设置ip 设置ospf router-id 5.5.5.5 区域0 宣称网段45.0 区域56 56.0
@R6 设置ip 设置ospf router-id 6.6.6.6 区域56 宣称网段56.0 2.0
3.按照实验要求配置
-R1和R2之间不选择DR
-就是修改他们之间的网络类型 需要进2个连接的接口修改 命令ospf network-type p2p
-R5为区域56的DR 需要修改R6 0/0/1接口优先级为0 并且重启ospf dr-priority 0
-配置R5为区域0的BDR 需要修改R40/0/0接口优先级为10 ospf dr-priority 0
-并且要重启<R4>reset ospf process
4.验证与测试
-验证r2个r5的角色为ABR 命令 display ospf brief

实现此案例需要按照如下步骤进行。

1）配置IP地址，设置OSPF区域

<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R1
[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]ip add 192.168.12.1 24
[R1-GigabitEthernet0/0/0]quit
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 12
[R1-ospf-1-area-0.0.0.12]network 192.168.12.0 0.0.0.255
[R1-ospf-1-area-0.0.0.12]quit
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R2
[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]ip add 192.168.12.2 24
[R2-GigabitEthernet0/0/1]quit
[R2]interface GigabitEthernet 0/0/0
[R2-GigabitEthernet0/0/0]ip add 192.168.23.2 24
[R2-GigabitEthernet0/0/0]quit
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 12
[R2-ospf-1-area-0.0.0.12]network 192.168.12.0 0.0.0.255
[R2-ospf-1-area-0.0.0.12]quit
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 192.168.23.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]quit
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R3
[R3]interface GigabitEthernet 0/0/1
[R3-GigabitEthernet0/0/1]ip add 192.168.23.3 24
[R3-GigabitEthernet0/0/1]quit
[R3]interface GigabitEthernet 0/0/0
[R3-GigabitEthernet0/0/0]ip add 192.168.34.3 24
[R3-GigabitEthernet0/0/0]quit
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 192.168.23.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 192.168.34.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]quit
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R4
[R4]interface GigabitEthernet 0/0/1
[R4-GigabitEthernet0/0/1]ip add 192.168.34.4 24
[R4-GigabitEthernet0/0/1]quit
[R4]interface GigabitEthernet 0/0/0
[R4-GigabitEthernet0/0/0]ip add 192.168.45.4 24
[R4-GigabitEthernet0/0/0]quit
[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 192.168.45.0 0.0.0.255
[R4-ospf-1-area-0.0.0.0]network 192.168.34.0 0.0.0.255
[R4-ospf-1-area-0.0.0.0]quit
2）设置R1和R2之间不选举DR配置

[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]ospf network-type p2p
[R1-GigabitEthernet0/0/0]quit
[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]ospf network-type p2p
[R2-GigabitEthernet0/0/1]quit
3）配置R5 为 区域 56 的 DR

[R6]interface GigabitEthernet 0/0/1
[R6-GigabitEthernet0/0/1] ospf dr-priority 0
[R6-GigabitEthernet0/0/1]quit
4）配置 R5 为 区域 0 的 BDR

[R4]interface GigabitEthernet 0/0/0
[R4-GigabitEthernet0/0/0]ospf dr-priority 10
[R4-GigabitEthernet0/0/0]quit
5）验证R2和R5是 ABR 的 角色

[R2]display ospf brief
OSPF Process 1 with Router ID 2.2.2.2
OSPF Protocol Information
RouterID: 2.2.2.2 Border Router: AREA // R2 为 ABR
Multi--Instance is not enabled
Global DS-TE Mode: Non-Standard IETF Mode
（……）
[R5]display ospf brief
OSPF Process 1 with Router ID 5.5.5.5
OSPF Protocol Information
RouterID: 5.5.5.5 Border Router: AREA // R2 为 ABR
Multi--Instance is not enabled
Global DS-TE Mode: Non-Standard IETF Mode

重点命令

4 案例4：OSPF多区域的配置
4.1 问题
如图配置IP地址，设置OSPF区域
确保R1和R2之间不选举DR，R5为区域56的DR，为区域0的BDR
验证R2和R5的角色为 ABR
确保PC-1和 PC-2可以互通
4.2 方案
搭建实验环境，如图-6所示。

图-6

4.3 步骤
实现此案例需要按照如下步骤进行。

1）配置IP地址，设置OSPF区域

<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R1
[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]ip add 192.168.12.1 24
[R1-GigabitEthernet0/0/0]quit
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 12
[R1-ospf-1-area-0.0.0.12]network 192.168.12.0 0.0.0.255
[R1-ospf-1-area-0.0.0.12]quit
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R2
[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]ip add 192.168.12.2 24
[R2-GigabitEthernet0/0/1]quit
[R2]interface GigabitEthernet 0/0/0
[R2-GigabitEthernet0/0/0]ip add 192.168.23.2 24
[R2-GigabitEthernet0/0/0]quit
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 12
[R2-ospf-1-area-0.0.0.12]network 192.168.12.0 0.0.0.255
[R2-ospf-1-area-0.0.0.12]quit
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 192.168.23.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]quit
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R3
[R3]interface GigabitEthernet 0/0/1
[R3-GigabitEthernet0/0/1]ip add 192.168.23.3 24
[R3-GigabitEthernet0/0/1]quit
[R3]interface GigabitEthernet 0/0/0
[R3-GigabitEthernet0/0/0]ip add 192.168.34.3 24
[R3-GigabitEthernet0/0/0]quit
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 192.168.23.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 192.168.34.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]quit
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R4
[R4]interface GigabitEthernet 0/0/1
[R4-GigabitEthernet0/0/1]ip add 192.168.34.4 24
[R4-GigabitEthernet0/0/1]quit
[R4]interface GigabitEthernet 0/0/0
[R4-GigabitEthernet0/0/0]ip add 192.168.45.4 24
[R4-GigabitEthernet0/0/0]quit
[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 192.168.45.0 0.0.0.255
[R4-ospf-1-area-0.0.0.0]network 192.168.34.0 0.0.0.255
[R4-ospf-1-area-0.0.0.0]quit
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R5
[R5]interface GigabitEthernet 0/0/1
[R5-GigabitEthernet0/0/1]ip add 192.168.45.5 24
[R5-GigabitEthernet0/0/1]quit
[R5]interface GigabitEthernet 0/0/0
[R5-GigabitEthernet0/0/0]ip add 192.168.56.5 24
[R5-GigabitEthernet0/0/0]quit
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 56
[R5-ospf-1-area-0.0.0.56]network 192.168.56.0 0.0.0.255
[R5-ospf-1-area-0.0.0.56]quit
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]network 192.168.45.0 0.0.0.255
[R5-ospf-1-area-0.0.0.0]quit
<Huawei>undo terminal monitor
<Huawei>system-view
[Huawei]sysname R6
[R6]interface GigabitEthernet 0/0/1
[R6-GigabitEthernet0/0/1]ip add 192.168.56.6 24
[R6-GigabitEthernet0/0/1]quit
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 56
[R6-ospf-1-area-0.0.0.56]network 192.168.56.0 0.0.0.255
[R6-ospf-1-area-0.0.0.56]quit
2）设置R1和R2之间不选举DR配置

[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]ospf network-type p2p
[R1-GigabitEthernet0/0/0]quit
[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]ospf network-type p2p
[R2-GigabitEthernet0/0/1]quit
3）配置R5 为 区域 56 的 DR

[R6]interface GigabitEthernet 0/0/1
[R6-GigabitEthernet0/0/1] ospf dr-priority 0
[R6-GigabitEthernet0/0/1]quit
4）配置 R5 为 区域 0 的 BDR

[R4]interface GigabitEthernet 0/0/0
[R4-GigabitEthernet0/0/0]ospf dr-priority 10
[R4-GigabitEthernet0/0/0]quit
5）验证R2和R5是 ABR 的 角色

[R2]display ospf brief
OSPF Process 1 with Router ID 2.2.2.2
OSPF Protocol Information
RouterID: 2.2.2.2 Border Router: AREA // R2 为 ABR
Multi-***-Instance is not enabled
Global DS-TE Mode: Non-Standard IETF Mode
（……）
[R5]display ospf brief
OSPF Process 1 with Router ID 5.5.5.5
OSPF Protocol Information
RouterID: 5.5.5.5 Border Router: AREA // R2 为 ABR
Multi-***-Instance is not enabled
Global DS-TE Mode: Non-Standard IETF Mode
（……）
6）确保PC-1和 PC-2互通

PC-1>ping 192.168.2.1
Ping 192.168.2.1: 32 data bytes, Press Ctrl_C to break
From 192.168.2.1: bytes=32 seq=1 ttl=125 time=31 ms
From 192.168.2.1: bytes=32 seq=2 ttl=125 time=31 ms
From 192.168.2.1: bytes=32 seq=3 ttl=125 time=16 ms
From 192.168.2.1: bytes=32 seq=4 ttl=125 time=16 ms
From 192.168.2.1: bytes=32 seq=5 ttl=125 time=31 ms
--- 192.168.2.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 16/25/31 ms
PC-2>ping 192.168.1.1
Ping 192.168.1.1: 32 data bytes, Press Ctrl_C to break
From 192.168.1.1: bytes=32 seq=1 ttl=125 time=16 ms
From 192.168.1.1: bytes=32 seq=2 ttl=125 time=31 ms
From 192.168.1.1: bytes=32 seq=3 ttl=125 time=31 ms
From 192.168.1.1: bytes=32 seq=4 ttl=125 time=32 ms
From 192.168.1.1: bytes=32 seq=5 ttl=125 time=31 ms
--- 192.168.1.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 16/28/32 ms

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