一、实验拓扑

二、实验需求
1、R4为ISP,其上只配置IP地址;R4与其他所直连设备间均使用公有IP;
2、R3-R5、R6、R7为MGRE环境,R3为中心站点;
3、整个OSPF环境IP基于172.16.0.0/16划分;除了R12有两个环回,其他路由器均有一个环回IP
4、所有设备均可访问R4的环回;
5、减少LSA的更新量,加快收敛,保障更新安全;
6、全网可达;
三、实验思路
1.划分IP
私网六条线路:(划分了八个,只用了六个)
172.16.0.16/28
172.16.0.32/28
172.16.0.48/28
172.16.0.64/28
172.16.0.80/28
172.16.0.96/28
172.16.0.112/28
172.16.0.128/28
MGRE:
172.16.1.0 /24
隧道中心:
R3===172.16.1.16/28
隧道分部:
R5===172.16.1.18/28
R6===172.16.1.19/28
R7===172.16.1.20/28
环回:
R1===172.16.2.0/24
R2===172.16.3.0/24
R3===172.16.4.0/24
R4===172.16.5.0/24
R5===172.16.6.0/24
R6===172.16.7.0/24
R7===172.16.8.0/24
R8===172.16.9.0/24
R9===172.16.10.0/24
R10===172.16.11.0/24
R11===172.16.12.0/24
R12(1)===172.16.13.0/24
R12(2)===172.16.14.0/24
2.静态缺省配通公网
3.ospf配通私网
4.做MGRE环境,R3为中心站点
5.做easyip使路由可访问R4的环回
6.用特殊区域做优化
7.加快收敛
8.安全认证
9.测试
四、实验步骤
1.配置IP
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 172.16.0.17 28
[R1-GigabitEthernet0/0/0]int l0
[R1-LoopBack0]ip add 172.16.2.1 24
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 172.16.0.18 28
[R2-GigabitEthernet0/0/0]int l0
[R2-LoopBack0]ip add 172.16.3.1 24
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 172.16.0.19 28
[R3-GigabitEthernet0/0/0]int s4/0/0
[R3-Serial4/0/0]ip add 34.0.0.1 24
[R3-Serial4/0/0]int l0
[R3-LoopBack0]ip add 172.16.4.1 24
[R4]int s4/0/0
[R4-Serial4/0/0]ip add 34.0.0.2 24
[R4-Serial4/0/0]int s4/0/1
[R4-Serial4/0/1]ip add 45.0.0.2 24
[R4-Serial4/0/1]int s3/0/0
[R4-Serial3/0/0]ip add 46.0.0.2 24
[R4-Serial3/0/0]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 47.0.0.2 24
[R4-GigabitEthernet0/0/0]int l0
[R4-LoopBack0]ip add 172.16.5.1 24
[R5]int s4/0/0
[R5-Serial4/0/0]ip add 45.0.0.1 24
[R5-Serial4/0/0]int l0
[R5-LoopBack0]ip add 172.16.6.1 24
[R6]int s4/0/0
[R6-Serial4/0/0]ip add 46.0.0.1 24
[R6-Serial4/0/0]int g0/0/0
[R6-GigabitEthernet0/0/0]ip add 172.16.0.113 28
[R6-GigabitEthernet0/0/0]int l0
[R6-LoopBack0]ip add 172.16.7.1 24
[R7]int g0/0/0
[R7-GigabitEthernet0/0/0]ip add 47.0.0.1 24
[R7-GigabitEthernet0/0/0]int g0/0/1
[R7-GigabitEthernet0/0/1]ip add 172.16.0.65 28
[R7-GigabitEthernet0/0/1]int l0
[R7-LoopBack0]ip add 172.16.8.1 24
[R8]int g0/0/0
[R8-GigabitEthernet0/0/0]ip add 172.16.0.66 28
[R8-GigabitEthernet0/0/0]int g0/0/1
[R8-GigabitEthernet0/0/1]ip add 172.16.0.81 28
[R8-GigabitEthernet0/0/1]int l0
[R8-LoopBack0]ip add 172.16.9.1 24
[R9]int g0/0/0
[R9-GigabitEthernet0/0/0]ip add 172.16.0.82 28
[R9-GigabitEthernet0/0/0]int g0/0/1
[R9-GigabitEthernet0/0/1]ip add 172.16.0.97 28
[R9-GigabitEthernet0/0/1]int l0
[R9-LoopBack0]ip add 172.16.10.1 24
[R10]int g0/0/0
[R10-GigabitEthernet0/0/0]ip add 172.16.0.98 28
[R10-GigabitEthernet0/0/0]int l0
[R10-LoopBack0]ip add 172.16.11.1 24
[R11]int g0/0/0
[R11-GigabitEthernet0/0/0]ip add 172.16.0.114 28
[R11-GigabitEthernet0/0/0]int g0/0/1
[R11-GigabitEthernet0/0/1]ip add 172.16.0.129 28
[R11-GigabitEthernet0/0/1]int l0
[R11-LoopBack0]ip add 172.16.12.1 24
[R12]int g0/0/0
[R12-GigabitEthernet0/0/0]ip add 172.16.0.130 28
[R12-GigabitEthernet0/0/0]int l0
[R12-LoopBack0]ip add 172.16.13.1 24
[R12-LoopBack0]int l1
[R12-LoopBack1]ip add 172.16.14.1 24
[R12]rip 1
[R12-rip-1]v 2
[R12-rip-1]undo summary
[R12-rip-1]net 172.16.0.0
2.静态缺省配通公网
[R3]ip route-static 0.0.0.0 0 34.0.0.2
[R5]ip route-static 0.0.0.0 0 45.0.0.2
[R6]ip route-static 0.0.0.0 0 46.0.0.2
[R7]ip route-static 0.0.0.0 0 47.0.0.2

3.ospf配通私网
#area 1
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]a 1
[R1-ospf-1-area-0.0.0.1]net 0.0.0.0 255.255.255.255
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]a 1
[R2-ospf-1-area-0.0.0.1]net 0.0.0.0 255.255.255.255
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]a 1
[R3-ospf-1-area-0.0.0.1]net 172.16.0.16 0.0.63.255
[R3-ospf-1-area-0.0.0.1]net 172.16.4.1 0.0.0.255


#area 2
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]a 0
[R6-ospf-1-area-0.0.0.0]net 172.16.7.0 0.0.0.255
[R6-ospf-1-area-0.0.0.0]q
[R6-ospf-1]a 2
[R6-ospf-1-area-0.0.0.2]net 172.16.0.112 0.0.63.255
[R11]ospf 1 router-id 11.11.11.11
[R11-ospf-1]a 2
[R11-ospf-1-area-0.0.0.2]net 172.16.0.112 0.0.63.255
[R11-ospf-1-area-0.0.0.2]net 172.16.0.128 0.0.63.255
[R11-ospf-1-area-0.0.0.2]net 172.16.12.0 0.0.0.255
[R12]ospf 1 router-id 12.12.12.12
[R12-ospf-1]a 2
[R12-ospf-1-area-0.0.0.2]net 172.16.0.128 0.0.63.255
[R12]ospf 1
[R12-ospf-1]import-route rip

#area 3
[R7]ospf 1 router-id 7.7.7.7
[R7-ospf-1]a 0
[R7-ospf-1-area-0.0.0.0]net 172.16.8.0 0.0.0.255
[R7-ospf-1-area-0.0.0.0]a 3
[R7-ospf-1-area-0.0.0.3]net 172.16.0.64 0.0.63.255
[R8]ospf 1 router-id 8.8.8.8
[R8-ospf-1]a 3
[R8-ospf-1-area-0.0.0.3]net 172.16.0.64 0.0.63.255
[R8-ospf-1-area-0.0.0.3]net 172.16.0.80 0.0.63.255
[R8-ospf-1-area-0.0.0.3]net 172.16.9.0 0.0.0.255
#area 4
[R9]ospf 1 router-id 9.9.9.9
[R9-ospf-1]a 3
[R9-ospf-1-area-0.0.0.3]net 172.16.0.80 0.0.63.255
[R9]ospf 2 r
[R9]ospf 2 router-id 9.9.9.9
[R9-ospf-2]a 4
[R9-ospf-2-area-0.0.0.4]net 172.16.10.0 0.0.0.255
[R9-ospf-2-area-0.0.0.4]net 172.16.0.97 0.0.0.0
[R10]ospf 2 router-id 10.10.10.10
[R10-ospf-2]a 4
[R10-ospf-2-area-0.0.0.4]net 172.16.0.96 0.0.63.255
[R10-ospf-2-area-0.0.0.4]net 172.16.11.0 0.0.0.255
#重发布
[R9]ospf 1 router-id 9.9.9.9
[R9-ospf-1]import-route ospf 2
[R9-ospf-1]q
[R9]ospf 2 router-id 9.9.9.9
[R9-ospf-2]import-route ospf 1

4.做MGRE环境,R3为中心站点
[R3]int t0/0/0
[R3-Tunnel0/0/0]ip add 172.16.1.17 28
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp
[R3-Tunnel0/0/0]nhrp network-id 10
[R3-Tunnel0/0/0]nhrp entry multicast dynamic
[R3-Tunnel0/0/0]source 34.0.0.1
[R5]int t0/0/0
[R5-Tunnel0/0/0]ip add 172.16.1.33 28
[R5-Tunnel0/0/0]tunnel-protocol gre p2mp
[R5-Tunnel0/0/0]source Serial 4/0/0
[R5-Tunnel0/0/0]nhrp network-id 10
[R5-Tunnel0/0/0]nhrp entry 172.16.1.17 34.0.0.1 register
[R6]int t0/0/0
[R6-Tunnel0/0/0]ip add 172.16.1.65 28
[R6-Tunnel0/0/0]tunnel-protocol gre p2mp
[R6-Tunnel0/0/0]source Serial 4/0/0
[R6-Tunnel0/0/0]nhrp network-id 10
[R6-Tunnel0/0/0]nhrp entry 172.16.1.17 34.0.0.1 register
[R7]int t0/0/0
[R7-Tunnel0/0/0]ip add 172.16.1.20 28
[R7-Tunnel0/0/0]tunnel-protocol gre p2mp
[R7-Tunnel0/0/0]source g0/0/0
[R7-Tunnel0/0/0]nhrp network-id 10
[R7-Tunnel0/0/0]nhrp entry 172.16.1.17 34.0.0.1 register

#area 0
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]a 0
[R3-ospf-1-area-0.0.0.0]net 172.16.1.17 0.0.0.0
[R3]int t0/0/0
[R3-Tunnel0/0/0]ospf network-type broadcast
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]a 0
[R5-ospf-1-area-0.0.0.0]net 172.16.1.18 0.0.0.0
[R5-ospf-1-area-0.0.0.0]net 172.16.6.0 0.0.0.255
[R5]int t0/0/0
[R5-Tunnel0/0/0]ospf network-type broadcast
[R5-Tunnel0/0/0]ospf dr-priority 0
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]a 0
[R6-ospf-1-area-0.0.0.0]net 172.16.1.19 0.0.0.0
[R6-ospf-1-area-0.0.0.0]net 172.16.7.0 0.0.0.255
[R6]int t0/0/0
[R6-Tunnel0/0/0]ospf network-type broadcast
[R6-Tunnel0/0/0]ospf dr-priority 0
[R7]ospf 1 router-id 7.7.7.7
[R7-ospf-1]a 0
[R7-ospf-1-area-0.0.0.0]ne 172.16.1.20 0.0.0.0
[R7]int t0/0/0
[R7-Tunnel0/0/0]ospf network-type broadcast
[R7-Tunnel0/0/0]ospf dr-priority 0


5.做easyip使路由可访问R4的环回
[R3]acl 2000
[R3-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[R3-acl-basic-2000]q
[R3]int s4/0/0
[R3-Serial4/0/0]nat outbound 2000
[R5]acl 2000
[R5-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[R5-acl-basic-2000]q
[R5]int s4/0/0
[R5-Serial4/0/0]nat outbound 2000
[R6]acl 2000
[R6-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[R6-acl-basic-2000]q
[R6]int s4/0/0
[R6-Serial4/0/0]nat outbound 2000
[R7]acl 2000
[R7-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[R7-acl-basic-2000]q
[R7]int g0/0/0
[R7-GigabitEthernet0/0/0]nat outbound 2000
6.用特殊区域做优化
#area 1
[R1]ospf 1
[R1-ospf-1]area 1
[R1-ospf-1-area-0.0.0.1]stub no-summary
[R2]ospf 1
[R2-ospf-1]a 1
[R2-ospf-1-area-0.0.0.1]stub no-summary
[R3]ospf 1
[R3-ospf-1]a 1
[R3-ospf-1-area-0.0.0.1]stub no-summary

#area 2
[R6]ospf 1
[R6-ospf-1]a 2
[R6-ospf-1-area-0.0.0.2]nssa no-summary
[R11]ospf 1
[R11-ospf-1]area 2
[R11-ospf-1-area-0.0.0.2]nssa no-summary
[R12]ospf 1
[R12-ospf-1]a 2
[R12-ospf-1-area-0.0.0.2]nssa no-summary

#area 3
[R7]ospf 1
[R7-ospf-1]a 3
[R7-ospf-1-area-0.0.0.3]nssa no-summary
[R8]ospf 1
[R8-ospf-1]a 3
[R8-ospf-1-area-0.0.0.3]nssa no-summary
[R9]ospf 1
[R9-ospf-1]a 3
[R9-ospf-1-area-0.0.0.3]nssa no-summary
[R9]ospf 2
[R9-ospf-2]default-route-advertise


7.加快收敛
#area 1
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ospf timer hello 5
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ospf timer hello 5
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ospf timer hello 5
#area 0
[R3]int t0/0/0
[R3-Tunnel0/0/0]ospf timer hello 5
[R5]int t0/0/0
[R5-Tunnel0/0/0]ospf timer hello 5
[R6]int t0/0/0
[R6-Tunnel0/0/0]ospf timer hello 5
[R7]int t0/0/0
[R7-Tunnel0/0/0]ospf timer hello 5
#area 2
[R6]int g0/0/0
[R6-GigabitEthernet0/0/0]ospf timer hello 5
[R12]int g0/0/0
[R12-GigabitEthernet0/0/0]ospf timer hello 5
[R11]int g0/0/0
[R11-GigabitEthernet0/0/0]ospf timer hello 5
[R11-GigabitEthernet0/0/0]int g0/0/1
[R11-GigabitEthernet0/0/1]ospf timer hello 5

8.区域安全认证
#area 0
[R3]ospf 1
[R3-ospf-1]a 0
[R3-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher w123
[R5]ospf 1
[R5-ospf-1]a 0
[R5-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher w123
[R6]ospf 1
[R6-ospf-1]a 0
[R6-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher w123
[R7]ospf 1
[R7-ospf-1]a 0
[R7-ospf-1-area-0.0.0.0]authentication-mode md5 1 cipher w123
#area 1
[R1]ospf 1
[R1-ospf-1]a 1
[R1-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher w123
[R2]ospf 1
[R2-ospf-1]a 1
[R2-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher w123
[R3]ospf 1
[R3-ospf-1]a 1
[R3-ospf-1-area-0.0.0.1]authentication-mode md5 1 cipher w123
#area 2
[R6]ospf 1
[R6-ospf-1]a 2
[R6-ospf-1-area-0.0.0.2]authentication-mode md5 1 cipher w123
[R11]ospf 1
[R11-ospf-1]a 2
[R11-ospf-1-area-0.0.0.2]authentication-mode md5 1 cipher w123
[R12]ospf 1
[R12-ospf-1]a 2
[R12-ospf-1-area-0.0.0.2]authentication-mode md5 1 cipher w123

9.测试



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