Hcip eighth day experiment

To configure IP Address and loopback address , stay r3 5 6 7 Configure a pointing r4 The default route for
[r3]ip route-static 0.0.0.0 0.0.0.0 12.1.1.2
[r5]ip route-static 0.0.0.0 0.0.0.0 23.1.1.1
[r6]ip route-static 0.0.0.0 0.0.0.0 34.1.1.1
[r7]ip route-static 0.0.0.0 0.0.0.0 45.1.1.1

r3 5 6 7 do mgre, With r3 Centered
[r3]int Tunnel 0/0/0
[r3-Tunnel0/0/0]ip add 10.1.1.1 255.255.255.0
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp
[r3-Tunnel0/0/0]source 12.1.1.1
[r3-Tunnel0/0/0]nhrp entry multicast dynamic
[r3-Tunnel0/0/0]nhrp network-id 100

[r5]int Tunnel 0/0/0
[r5-Tunnel0/0/0]ip add 10.1.1.2 255.255.255.0
[r5-Tunnel0/0/0]tunnel-protocol gre p2mp
[r5-Tunnel0/0/0]source Serial 4/0/0
[r5-Tunnel0/0/0]nhrp network-id 100
[r5-Tunnel0/0/0]nhrp entry 10.1.1.1 12.1.1.1 register

[r6]int Tunnel 0/0/0
[r6-Tunnel0/0/0]ip add 10.1.1.3 255.255.255.0
[r6-Tunnel0/0/0]tunnel-protocol gre p2mp
[r6-Tunnel0/0/0]source Serial 4/0/0
[r6-Tunnel0/0/0]nhrp network-id 100
[r6-Tunnel0/0/0]nhrp entry 10.1.1.1 12.1.1.1 register

[r7]int Tunnel 0/0/0
[r7-Tunnel0/0/0]ip add 10.1.1.4 255.255.255.0
[r7-Tunnel0/0/0]tunnel-protocol gre p2mp
[r7-Tunnel0/0/0]source Serial 4/0/0
[r7-Tunnel0/0/0]nhrp network-id 100
[r7-Tunnel0/0/0]nhrp entry 10.1.1.1 12.1.1.1 register

Announce to each network segment OSPF, And will ospf stay MGRE The working mode in the environment is set to broadcast mode , Then manually intervene in the election DR
The announcement has nothing to do with the public network segment , for example R3 stay area0 Announced in , Only announce private network , Do not announce the public network
[r1]ospf 1 router-id 172.16.1.1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]network 172.16.1.1 0.0.0.0
[r1-ospf-1-area-0.0.0.1]network 172.16.3.2 0.0.0.0

[r2]ospf 1 router-id 172.16.2.1
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]network 172.16.2.1 0.0.0.0
[r2-ospf-1-area-0.0.0.1]network 172.16.3.3 0.0.0.0

[r3]ospf 1 router-id 172.16.4.1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]network 172.16.3.1 0.0.0.0
[r3-ospf-1-area-0.0.0.1]network 172.16.4.1 0.0.0.0

[r5]ospf 1 router-id 172.16.5.1
[r5-ospf-1]area0
[r5-ospf-1-area-0.0.0.0]network 172.16.5.1 0.0.0.0

[r6]ospf 1 router-id 172.16.6.1
[r6-ospf-1]area 0
[r6-ospf-1-area-0.0.0.0]network 172.16.6.1 0.0.0.0
[r6]ospf 1
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.2]network 172.16.7.1 0.0.0.0

[r11]ospf 1 router-id 172.16.8.1
[r11-ospf-1]area 2
[r11-ospf-1-area-0.0.0.2]network 172.168.8.1 0.0.0.0
[r11-ospf-1-area-0.0.0.2]network 172.168.9.1 0.0.0.0
[r11-ospf-1-area-0.0.0.2]network 172.168.7.2 0.0.0.0

[r12]ospf 1 router-id 172.16.18.1
[r12-ospf-1]area 2
[r12-ospf-1-area-0.0.0.2]network 172.168.9.2 0.0.0.0

[r7]ospf 1 router-id 172.16.11.1
[r7-ospf-1]area 0
[r7-ospf-1-area-0.0.0.0]network 172.16.11.1 0.0.0.0
[r7-ospf-1]area 3
[r7-ospf-1-area-0.0.0.3]network 172.16.12.1 0.0.0.0

[r8]ospf 1 router-id 172.16.13.1
[r8-ospf-1]area 3
[r8-ospf-1-area-0.0.0.3]network 172.16.13.1 0.0.0.0
[r8-ospf-1-area-0.0.0.3]network 172.16.14.1 0.0.0.0
[r8-ospf-1-area-0.0.0.3]network 172.16.12.2 0.0.0.0

[r9]ospf 2 router-id 172.16.15.1
[r9-ospf-2]area 4
[r9-ospf-2-area-0.0.0.4]network 172.16.15.1 0.0.0.0
[r9-ospf-2-area-0.0.0.4]network 172.16.16.1 0.0.0.0

[r10]ospf 2 router-id 172.16.17.1
[r10-ospf-2]area 4
[r10-ospf-2-area-0.0.0.4]network 172.16.17.1 0.0.0.0
[r10-ospf-2-area-0.0.0.4]network 172.16.16.2 0.0.0.0
[r10-ospf-1]import-route ospf 2
[r10-ospf-1]q
[r10]ospf 2
[r10-ospf-2]import-route ospf 1

stay ASBR Router R12 start-up rip process , Declare two loops back into rip, Republish again , Two way sharing of routes generated by different protocols
[r12]rip
[r12-rip-1]version 2
[r12-rip-1]undo summary
[r12-rip-1]network 172.16.0.0
[r12-rip-1]q
[r12]ospf 1
[r12-ospf-1]import-route rip 1
[r12-ospf-1]q
[r12]rip
[r12-rip-1]import-route ospf 1

Next, optimize the network , Try to reduce LSA The number of updates
[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]abr-summary 172.16.0.0 255.255.0.0

[r6]ospf 1
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.1]abr-summary 172.16.0.0 255.255.0.0

[r7]ospf 1
[r7-ospf-1]area 3
[r7-ospf-1-area-0.0.0.1]abr-summary 172.16.0.0 255.255.0.0

[r12]ospf 1
[r12-ospf-1]asbr-summary172.16.0.0 255.255.0.0

[r9]ospf 1
[r9-ospf-1]asbr-summary 172.16.0.0 255.255.0.0

Set area 1 as the end
[r1]ospf 1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]stub

[r2]ospf 1
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]stub

[r3ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]stub
And then only in R3 Upper perfect
[r3ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]stub no-summary
This becomes a complete terminal region

Put the area 2 And region 3 Set up NSSA
[r6]ospf 1
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.1]nssa
[r11]ospf 1
[r11-ospf-1]area 2
[r11-ospf-1-area-0.0.0.1]nssa
[r12]ospf 1
[r12-ospf-1]area 2
[r12-ospf-1-area-0.0.0.1]nssa
And then only in R6 Upper perfect NSSA
[r6]ospf 1
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.1]nssa no-summary

Then connect NAT, With the public network, the whole network can reach , stay R3,6,7 Configure static one-to-one NAT
complete