OSPF综合实验

一、实验拓扑二、实验步骤

1,R5为ISP，其上只能配置IP地址；R4作为企业边界路由器，出口公网地址需要通过PPP协议获取，并进行chap认证

2，整个OSPF环境IP基于172.16.0.0/16划分；

3，所有设备均可访问R5的环回；

4，减少LSA的更新量，加快收敛，保障更新安全；

5，全网可达

三、实验配置

1、IP地址划分

将172.16.0.0/16进行子网划分172.16.0.0/19 ---A0
172.16.0.0/24-﹣骨干
172.16.0.0/30--R3-R4
172.16.0.4/30--R4-R6
172.16.0.8/30--R4-R7
45.0.0.0/30---R4-R5
100.1.1.0/24---R5环回172.16.32.0/19 ---A1
172.16.32.0/24--R1
172.16.33.0/24--R2
172.16.34.0/24--R3
172.16.35.0/24--骨干
172.16.35.0/29 --骨干172.16.64.0/19---A2
172.16.96.0/19 ---Α3
172.16.128.0/19---A4

 2、配置IP地址和环回地址

R1:
[r1-GigabitEthernet0/0/0]ip address 172.16.35.1 29
[r1-LoopBack0]ip address 172.16.32.1 24
[r1-LoopBack0]ospf network-type broadcast R2:
[r2-GigabitEthernet0/0/0]ip address 172.16.35.2 29
[r2-LoopBack0]ip address 172.16.33.1 24
[r2-LoopBack0]ospf network-type broadcastR3:
[r3-GigabitEthernet0/0/0]ip address 172.16.35.3 29
[r3-GigabitEthernet0/0/1]ip address 172.16.0.1 30
[r3-LoopBack0]ip address 172.16.34.1 24
[r3-LoopBack0]ospf network-type broadcast R4:
[r4-GigabitEthernet0/0/0]ip address 172.16.0.9 30
[r4-GigabitEthernet0/0/1]ip address 172.16.0.2 30
[r4-GigabitEthernet0/0/2]ip address 172.16.0.5 30
[r4-Serial4/0/1]ip address 45.0.0.1 30R5:
[Huawei]sys isp
[isp-Serial4/0/0]ip address 45.0.0.2 30
[isp-LoopBack0]ip address 100.1.1.1 24R6:
[r6-GigabitEthernet0/0/0]ip address 172.16.66.1 30
[r6-GigabitEthernet0/0/1]ip address 172.16.0.6 30
[r6-LoopBack0]ip address 172.16.64.1 24
[r6-LoopBack0]ospf network-type broadcastR7:
[r7-GigabitEthernet0/0/0]ip address 172.16.0.10 30
[r7-GigabitEthernet0/0/1]ip address 172.16.98.1 30
[r7-LoopBack0]ip address 172.16.96.1 24
[r7-LoopBack0]ospf network-type broadcastR8:
[r8-GigabitEthernet0/0/0]ip address 172.16.98.2 30
[r8-GigabitEthernet0/0/1]ip address 172.16.98.5 30
[r8-LoopBack0]ip address 172.16.97.1 24
[r8-LoopBack0]ospf network-type broadcastR9:
[r9-GigabitEthernet0/0/0]ip address 172.16.98.6 30
[r9-GigabitEthernet0/0/1]ip address 172.16.130.1 24
[r9-LoopBack0]ip address 172.16.128.1 24
[r9-LoopBack0]ospf network-type broadcastR10:
[r10-GigabitEthernet0/0/0]ip address 172.16.130.2 30
[r10-GigabitEthernet0/0/1]ip address 172.16.129.1 24
[r10-LoopBack0]ip address 172.16.129.1 24
[r10-LoopBack0]ospf network-type broadcastR11:
[r11-GigabitEthernet0/0/0]ip address 172.16.66.2 30
[r11-GigabitEthernet0/0/1]ip address 172.16.66.5 30
[r11-LoopBack0]ip address 172.16.65.1 24
[r11-LoopBack0]ospf network-type broadcastR12:
[r12-GigabitEthernet0/0/0]ip address 172.16.66.6 30
[r12-LoopBack0]ip address 10.1.1.1 24
[r12-LoopBack1]ip address 10.1.2.1 24

3、依次配置ospf

AR1：
[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]a 1
[r1-ospf-1-area-0.0.0.1]network 172.16.32.1 0.0.0.0
[r1-ospf-1-area-0.0.0.1]network 172.16.35.1 0.0.0.0AR2：
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1-area-0.0.0.1]network 172.16.33.1 0.0.0.0
[r2-ospf-1-area-0.0.0.1]network 172.16.35.2 0.0.0.0AR3：
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1-area-0.0.0.1]network 172.16.35.3 0.0.0.0
[r3-ospf-1-area-0.0.0.1]network 172.16.34.1 0.0.0.0
[r3-ospf-1-area-0.0.0.0]network 172.16.0.1 0.0.0.0AR4：
[r4]ospf 1 router-id 4.4.4.4
[r4-ospf-1-area-0.0.0.0]network 172.16.0.2 0.0.0.0
[r4-ospf-1-area-0.0.0.0]network 172.16.0.5 0.0.0.0
[r4-ospf-1-area-0.0.0.0]network 172.16.0.9 0.0.0.0AR6：
[r6]ospf 1 router-id 6.6.6.6
[r6-ospf-1-area-0.0.0.0]network 172.16.0.6 0.0.0.0
[r6-ospf-1-area-0.0.0.2]network 172.16.66.1 0.0.0.0
[r6-ospf-1-area-0.0.0.2]network 172.16.64.1 0.0.0.0AR7：
[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1-area-0.0.0.0]network 172.16.0.10 0.0.0.0
[r7-ospf-1-area-0.0.0.3]network 172.16.96.1 0.0.0.0
[r7-ospf-1-area-0.0.0.3]network 172.16.98.1 0.0.0.0AR8：
[r8]ospf 1 router-id 8.8.8.8
[r8-ospf-1-area-0.0.0.3]network 172.16.98.2 0.0.0.0
[r8-ospf-1-area-0.0.0.3]network 172.16.97.1 0.0.0.0
[r8-ospf-1-area-0.0.0.3]network 172.16.98.5 0.0.0.0AR9： 
（宣告在ospf2，成为ASBR设备进行双向重发布）
[r9]ospf 2 router-id 9.9.9.9
[r9-ospf-2-area-0.0.0.4]network 172.16.128.1 0.0.0.0
[r9-ospf-2-area-0.0.0.4]network 172.16.130.1 0.0.0.0AR10：
[r10]ospf 1 router-id 10.10.10.10
[r10-ospf-1-area-0.0.0.4]network 172.16.129.1 0.0.0.0
[r10-ospf-1-area-0.0.0.4]network 172.16.130.2 0.0.0.0AR11：
[r11]ospf 1 router-id 11.11.11.11
[r11-ospf-1-area-0.0.0.2]network 172.16.66.2 0.0.0.0
[r11-ospf-1-area-0.0.0.2]network 172.16.65.1 0.0.0.0
[r11-ospf-1-area-0.0.0.2]network 172.16.66.5 0.0.0.0AR12：
[r12]ospf 1 router-id 12.12.12.12
[r12-ospf-1-area-0.0.0.2]network 172.16.66.6 0.0.0.0

4、配置RIP

[r12]rip 1
[r12-rip-1]ver 2
[r12-rip-1]network 10.0.0.0

5、配置双向重发布

[r9]ospf 1
[r9-ospf-1]import-route ospf 2[r12]ospf 1
[r12-ospf-1]import-route rip 1

6、路由汇总

[r4]ip route-static 0.0.0.0 0 45.0.0.2
[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]abr-summary 172.16.32.0 255.255.224.0
[r6-ospf-1-area-0.0.0.2]abr-summary 172.16.64.0 255.255.224.0
[r7-ospf-1-area-0.0.0.3]abr-summary 172.16.96.0 255.255.224.0
[r9-ospf-1]asbr-summary 172.16.128.0 255.255.224.0
[r12-ospf-1]asbr-summary 10.1.0.0 255.255.252.0

7、划分特殊区域，下放缺省

[r1-ospf-1-area-0.0.0.1]stub 
[r2-ospf-1-area-0.0.0.1]stub 
[r3-ospf-1-area-0.0.0.1]stub no-summary 
[r6-ospf-1-area-0.0.0.2]nssa no-summary
[r11-ospf-1-area-0.0.0.2]nssa 
[r12-ospf-1-area-0.0.0.2]nssa 
[r7-ospf-1-area-0.0.0.3]nssa no-summary
[r8-ospf-1-area-0.0.0.3]nssa
[r9-ospf-1]asbr-summary 172.16.128.0 255.255.224.0
[r9-ospf-1-area-0.0.0.3]nssa
[r9-ospf-2]default-route-advertise   ---------- 下放缺省路由
[r4-ospf-1]default-route-advertise   ---------- 下放缺省路由

8、加快收敛

P2P：
AR3：
[r3-GigabitEthernet0/0/1]ospf network-type p2pAR4：
[r4-GigabitEthernet0/0/1]ospf network-type p2p
[r4-GigabitEthernet0/0/0]ospf network-type p2p
[r4-Serial4/0/1]ospf network-type p2p
[r4-GigabitEthernet0/0/2]ospf network-type p2pAR5：
[LSP-Serial4/0/0]ospf network-type p2pAR6：
[r6-GigabitEthernet0/0/0]ospf network-type p2p
[r6-GigabitEthernet0/0/1]ospf network-type p2pAR7：
[r7-GigabitEthernet0/0/0]ospf network-type p2p
[r7-GigabitEthernet0/0/1]ospf network-type p2pAR8：
[r8-GigabitEthernet0/0/0]ospf network-type p2p
[r8-GigabitEthernet0/0/1]ospf network-type p2pAR9：
[r9-GigabitEthernet0/0/0]ospf network-type p2p
[r9-GigabitEthernet0/0/1]ospf network-type p2pAR10：
[r10-GigabitEthernet0/0/0]ospf network-type p2pAR11：
[r11-GigabitEthernet0/0/0]ospf network-type p2p
[r11-GigabitEthernet0/0/1]ospf network-type p2pAR12：
[r12-GigabitEthernet0/0/0]ospf network-type p2pp2mp:
[r1-GigabitEthernet0/0/0]ospf network-type p2mp
[r2-GigabitEthernet0/0/0]ospf network-type p2mp
[r3-GigabitEthernet0/0/0]ospf network-type p2mp

9、更改hello包更新时长

[r1-GigabitEthernet0/0/0]ospf timer hello 1[r2-GigabitEthernet0/0/0]ospf timer hello 1[r3-GigabitEthernet0/0/0]ospf timer hello 1

10、（区域认证）保障网络更新安全

[r4]ospf 1[r4-ospf-1]area 0[r4-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher 123456[r3-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher 123456[r6-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher 123456[r7-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher 123456

11、联通外网

[r4]acl 2000[r4-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255[r4]int s 4/0/1[r4-Serial4/0/1]nat outbound 2000

四、实验结果