Hcip day 6 OSPF static experiment

Catalog

One 、 The experiment purpose

Two 、 The experimental requirements

3、 ... and 、 The experimental steps

1. Change device name

2. IP Division and interface configuration

3. structure MGRE Environment and configuration default routes

4.NAT address translation

5.OSPF Announcement and RIP Declare

6. Multi process bidirectional republication

7. Routing summary

8. Empty interface configuration

9. Complete terminal area and NSSA Area

Four 、 test

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One 、 The experiment purpose

adopt OSPF Routing information protocol （ Dynamic routing ） Configure the topology environment shown in the figure below to meet the specified experimental requirements

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Two 、 The experimental requirements

1.R4 by ISP, Can only be configured on it IP Address ;R4 It is used with all other directly connected equipment IP;

2.R3---R5/6/7 by MGRE Environmental Science ,R3 For the center ;

3. Whole OSPF The environment address is 172.16.0.0/16

4. All devices are accessible R4 The loopback of ;

5. Reduce LSA Update quantity of ;

6. Network wide accessibility ;

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3、 ... and 、 The experimental steps

1. Change device name

With R1 For example ：

[Huawei]sysname r1

[r1]

2. IP Division and interface configuration

The whole topology environment has 6 Regions , So it will 172.16.0.0/16 Divided into 6 Net segment

①OSPF 1

1）Area 0

total 172.16.0.0/19

The backbone 172.16.0.0/21

Loopback

172.16.8.0/21

172.16.16.0/21

172.16.24.0/21

2）Area 1

total 172.16.32.0/19

The backbone

AR3-4 34.1.1.0/24

AR4-5 45.1.1.0/24

AR4-6 46.1.1.0/24

AR4-7 47.1.1.0/24

Loopback

172.16.32.0/21

172.16.40.0/21

172.16.48.0/21

172.16.56.0/21

3）Area2

total 172.16.64.0/19

The backbone

172.16.64.0/21

172.16.72.0/21

Loopback

172.16.80.0/21

4）AR3

total 172.16.96.0/19

The backbone

172.16.96.0/21

172.16.104.0/21

Loopback

172.16.112.0/21

②OSPF 2

Area 4

total 172.16.128.0/19

The backbone

172.16.128.0/21

Loopback

172.16.136.0/21

172.16.144.0/21

③RIP

total 172.16.160.0/19

Loopback

172.16.160.0/21

172.16.168.0/21

④Tunnel

Four interfaces

AR3 10.1.1.1/24

AR5 10.1.1.2/24

AR6 10.1.1.3/24

AR7 10.1.1.4/24

With R4 For example

[R4]interface S3/0/0 
[R4-Serial3/0/0]ip address 34.1.1.4 255.255.255.0
[R4]interface S3/0/1
[R4-Serial3/0/1]ip address 45.1.1.4 255.255.255.0
[R4]interface S4/0/0
[R4-Serial4/0/0]ip address 46.1.1.4 255.255.255.0
[R4]interface S4/0/1
[R4-Serial4/0/0]ip address 47.1.1.4 255.255.255.0
[R4]interface LoopBack 0
[R4-LoopBack0]ip address 172.16.32.1 255.255.248.0

3. structure MGRE Environment and configuration default routes

Respectively by AR3（ Center point ） and AR5（ A site ） For example

R3

[R3]ip route-static 0.0.0.0 0 34.1.1.4
[R3]int t0/0/0
[R3-Tunnel0/0/0]ip address 10.1.1.1 255.255.255.0 
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp     
[R3-Tunnel0/0/0]source 34.1.1.3
[R3-Tunnel0/0/0]ospf network-type broadcast
[R3-Tunnel0/0/0]nhrp entry multicast dynamic
[R5-Tunnel0/0/0]ospf network-type broadcast    

R5

[R3]ip route-static 0.0.0.0 0 45.1.1.4
[R5]int t0/0/0
[R5-Tunnel0/0/0]ip address 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]ospf network-type broadcast
[R5-Tunnel0/0/0]nhrp entry 10.1.1.1 34.1.1.3 register
[R5-Tunnel0/0/0]ospf network-type broadcast
[R5-Tunnel0/0/0]ospf dr-priority 0

R5/6/7 Of ospf dr-priority All changed to 0, Re elect after completion ,DR by R3;

4.NAT address translation

to R3/5/6/7 To configure NAT address translation

With AR3 For example

R3

[R3]acl 2000
[R3-acl-basic-2000]rule 1 permit source any
[R3]int s4/0/0
[R3-Serial4/0/0]nat outbound 2000

5.OSPF Announcement and RIP Declare

To divide R4 Outside of the R1-R11 The router does OSPF Declare , to R12 The router does RIP Declare

notes R10 Of OSPF The process and R9 Of s4/0/0 Interface OSPF The process is OSPF 2

With R3 and R12 For example

R3

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 1 
[R3-ospf-1-area-0.0.0.1]network 172.16.0.3 0.0.0.0 
[R3-ospf-1-area-0.0.0.1]network 172.16.24.1 0.0.0.0
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 10.1.1.1 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 34.1.1.3 0.0.0.0

R12

[R12]rip
[R12]rip 1
[R12-rip-1]version 2
[R12-rip-1]network 172.16.0.0

6. Multi process bidirectional republication

take OSPF 2 Of Area 4 Areas and RIP 1 Area republished to OSPF 1 Area

R9

[R9]ospf 1
[R9-ospf-1]import-route ospf 2

R12

[R12]ospf 1
[R12-ospf-1]import-route rip 1

7. Routing summary

To reduce the routing table LSA The number of , It needs to be summarized

Intra domain routing takes R1 For example

R1

[R3]ospf 1
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]abr-summary 172.16.0.0 255.255.224.0

Extraterritorial routing takes R12 For example

[R12]ospf 1
[R12-ospf-1]area 2
[R12-ospf-1-area-0.0.0.2]abr-summary 172.16.160.0 255.255.224.0

8. Empty interface configuration

Configure the air interface in the summarized routers to prevent the generation of loops

With R3 For example

R3

[R3]ip route-static 172.16.0.0 19 NULL 0

9. Complete terminal area and NSSA Area

1） The terminal area

Area 1

With R1 and R3 For example

R1

[R1]ospf 1
[R1-ospf-1]area 1
[R1-ospf-1-area-0.0.0.1]stub

R3

[R3]ospf 1
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]stub no-summary

2）NSSA Area

Area3 and Area2

With Area2 Regional R6 and R11 For example

R6

[R6]ospf 1
[R6-ospf-1]area 2
[R6-ospf-1-area-0.0.0.2]nssa no-summary

R11

[R11]ospf 1
[R11-ospf-1]area 2
[R11-ospf-1-area-0.0.0.2]nssa

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Four 、 test

  As mentioned above ： All the requirements of the experiment have been met  , Successful experiment .