OSPF comprehensive experiment

OSPF Comprehensive experiment

 

requirement ：
（1）R4 by ISP, Above all You can only configure IP Address ;R4 It is used with all other directly connected equipment public IP Address

1. R3、R5、R6、R7、（ Private network boundary ） by MGRE Environmental Science ,R3 For the central site ;
2. Whole OSPF Environmental Science IP be based on 172.16.0.0 /16 Divide 【RIP Also based on the division of the network segment 】;
3. All devices are accessible R4 Loopback ;
4. Reduce LSA Update quantity of , Speed up convergence , To ensure the security of updates （ospf Certification of ） ;

【 Make special areas （ And non backbone areas , No virtual link , non-existent ASBR equipment ）（ The terminal area ： Ordinary peripheral areas are not learning 4 Classes and 5 class LSA Information ; Completely peripheral area 3、4、5 Classes no longer learn ）（ Incomplete ending area ：NSSA Common incomplete terminal area ： Refuse 4 and 5 class , It has ABR The device does not need 4 class ,4 Classes exist to find ASBR The location of （ Can be 1 and 2 Analogical calculation ASBR Location ） Seven categories only appear in ASBR among , And seven categories are equivalent to the strengthening of five categories ; Complete and incomplete peripheral regions ：NSSA Area ： Refuse 3,4,5 class , Use 3 Class default 】

1. Network wide accessibility

Network division ：

In large-scale network planning, priority should be given to dividing according to network protocols ;

But this is different ,RIP Topology small , So only divide it into six network segments .

172.16.00000000.0 /16

172.16.0.0 /19 ——A0

Generally in 24（254）,25（126）,26（62） Choose from

172.16.0.0 /24 ——P2P The backbone of

172.16.0.0 /30

172.16.0.4 /30

172.16.0.8 /30

...

172.16.1.0 /24 ——MA The backbone of

172.16.1.0 /29

172.16.1.8 /29

172.16.1.16 /29

...

172.16.2.0 /24

...

172.16.31.0 /24

Backbone links ：P2P（ Two IP Address ）30 and MA（ Multi node network ）29

172.16.32.0 /19 ——A1

172.16.32.0 /24 ——P2P The backbone of

172.16.32.0  /30

172.16.32.4  /30

172.16.32.8  /30

...

172.16.33.0 /24 ——MA The backbone of

172.16.33.0  /29

172.16.33.8  /29

172.16.33.16  /29

...

172.16.34.0 /24

...

172.16.63.0 /24

172.16.64.0 /19 ——A2

172.16.96.0 /19 ——A3

172.16.128.0 /19 ——A4

172.16.160.0 /19 ——RIP

172.16.160.0 /20

172.16.176.0 /20

172.16.110 00000.0 /19

172.16.111 00000.0 /19

View historical configuration ：

display history-command

Area 0:

R3:

[R3]int s 4/0/0

[R3-Serial4/0/0]ip ad 34.0.0.1 24

[R3]ip route-static 0.0.0.0 0 34.0.0.2

R4:

[R4]SYS ISP

[ISP]int s 4/0/0

[ISP-Serial4/0/0]ip ad 34.0.0.2 24

[ISP-Serial4/0/0]int s 4/0/1

[ISP-Serial4/0/1]ip ad 45.0.0.2 24

[ISP-Serial4/0/1]int s 3/0/0

[ISP-Serial3/0/0]ip ad 46.0.0.2 24

[ISP-Serial4/0/1]int s 3/0/0

[ISP-Serial3/0/0]ip ad 46.0.0.2 24

[ISP-Serial3/0/0]int g0/0/0

[ISP-GigabitEthernet0/0/0]ip ad 47.0.0.2 24

[ISP-GigabitEthernet0/0/0]int l0

[ISP-LoopBack0]ip ad 4.4.4.4 24

R5:

[R5]int s 4/0/0

[R5-Serial4/0/0]ip ad 45.0.0.1 24

[R5]ip route-static 0.0.0.0 0 45.0.0.2

R6:

[Huawei]SYS R6

[R6]int s 4/0/0

[R6-Serial4/0/0]ip ad 46.0.0.1 24

[R6]ip route-static 0.0.0.0 0 46.0.0.2

R7:

[Huawei]SYS R7

[R7]int g0/0/0

[R7-GigabitEthernet0/0/0]ip ad 47.0.0.1 24

[R7]ip route-static 0.0.0.0 0 47.0.0.2

test ：

 

 

 

To configure MGRE Environmental Science

【R3】：

[R3-Tunnel0/0/0] ip address 172.16.1.1 29

[R3-Tunnel0/0/0]tunnel-protocol gre p2mp

[R3-Tunnel0/0/0]nhrp network-id 100

[R3-Tunnel0/0/0]nhrp entry multicast dynamic

【R5】：

[R5]int t 0/0/0

[R5-Tunnel0/0/0]ip ad 172.16.1.2 29

[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 172.16.1.1 34.0.0.1 register

[R5-Tunnel0/0/0]q

[R5]int l0

[R5-LoopBack0]ip ad 172.16.2.1 24

【R6】：

[R6]int t 0/0/0

[R6-Tunnel0/0/0]ip ad 172.16.1.3 29

[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 172.16.1.1 34.0.0.1 register

[R6-Tunnel0/0/0]q

[R6]int l0

[R6-LoopBack0]ip ad 172.16.3.1 24

【R7】：
<R7>sys

Enter system view, return user view with Ctrl+Z.

[R7]int t 0/0/0

[R7-Tunnel0/0/0]ip ad 172.16.1.4 29

[R7-Tunnel0/0/0]tunnel-protocol gre p2mp

[R7-Tunnel0/0/0]source GigabitEthernet 0/0/0

[R7-Tunnel0/0/0]nhrp network-id 100

[R7-Tunnel0/0/0]nhrp entry 172.16.1.1 34.0.0.1 register

[R7]int l0

[R7-LoopBack0]ip ad 172.16.4.1 24

verification MGRE The success of ：

 

 

 

 

Area 1:

【R1】：
[R1]int g0/0/0

[R1-GigabitEthernet0/0/0]ip ad 172.16.33.1 29

[R1-GigabitEthernet0/0/0]int l0

[R1-LoopBack0]ip ad 172.16.34.1 24

【R2】：

[R2]int g0/0/0

[R2-GigabitEthernet0/0/0]ip ad 172.16.33.2 29

[R2-GigabitEthernet0/0/0]int l0

[R2-LoopBack0]ip ad 172.16.35.1 24

【R3】：

[R3]int g0/0/0

[R3-GigabitEthernet0/0/0]ip ad 172.16.33.3 29

[R3-GigabitEthernet0/0/0]int l0

[R3-LoopBack0]ip ad 172.16.36.1 24

test ：

 

 

 

Area 2

【R6】：

<R6>sys

[R6]int g0/0/0

[R6-GigabitEthernet0/0/0]ip ad 172.16.65.1 29

[R6-GigabitEthernet0/0/0]q

【R11】

[R11]int g0/0/0

[R11-GigabitEthernet0/0/0]ip ad 172.16.65.2 29

[R11-GigabitEthernet0/0/0]int l0

[R11-LoopBack0]ip ad 172.16.66.1 24

[R11-LoopBack0]int g0/0/1

[R11-GigabitEthernet0/0/1]ip ad 172.16.65.9 29

【R12】

[Huawei]sys R12

[R12]INT g0/0/0

[R12-GigabitEthernet0/0/0]ip ad 172.16.65.10 29

[R12-GigabitEthernet0/0/0]q

[R12]int l0

[R12-LoopBack0]ip ad 172.16.160.1 20

[R12-LoopBack0]int l1

[R12-LoopBack1]ip ad 172.16.176.1 20

[R12-LoopBack1]

test ：

 

Area 3:

【R7】：

[R7-GigabitEthernet0/0/1]ip ad 172.16.97.1 29

【R8】：

[R8]int g0/0/0

[R8-GigabitEthernet0/0/0]ip ad 172.16.97.2 29

[R8-GigabitEthernet0/0/0]int l0

[R8-LoopBack0]ip ad 172.16.98.1 24

[R8-LoopBack0]int g 0/0/1

[R8-GigabitEthernet0/0/1]ip ad 172.16.97.9 29

【R9】：

[R9]int g0/0/0

[R9-GigabitEthernet0/0/0]ip ad 172.16.97.10 29

test ：

 

Area 4:

【R9】：
[R9]int g0/0/0

[R9-GigabitEthernet0/0/0]ip ad 172.16.97.10 29

[R9-GigabitEthernet0/0/0]int g0/0/1

[R9-GigabitEthernet0/0/1]ip ad 172.16.129.1 29

[R9-GigabitEthernet0/0/1]int l0

[R9-LoopBack0]ip ad 172.16.130.1 24

【R10】：

[R10]int g0/0/0

[R10-GigabitEthernet0/0/0]ip ad 172.16.129.2 29

[R10-GigabitEthernet0/0/0]int l0

[R10-LoopBack0]ip ad 172.16.131.1 24

test ：

 

 

• OSPF Configuration of

【R1】：

[R1]ospf 1 r

[R1]ospf 1 router-id 1.1.1.1

[R1-ospf-1]a 1

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

[R1-ospf-1-area-0.0.0.1]network 172.16.0.0 0.0.255.255

【R2】：

[R2]ospf 1 r

[R2]ospf 1 router-id 2.2.2.2

[R2-ospf-1]a 1

[R2-ospf-1-area-0.0.0.1]network 172.16.0.0 0.0.255.255

【R3】：
[R3]ospf 1 r

[R3]ospf 1 router-id 3.3.3.3

[R3-ospf-1]a 1

[R3-ospf-1-area-0.0.0.1]netw

[R3-ospf-1-area-0.0.0.1]network 172.16.32.0 0.0.7.255

[R3-ospf-1-area-0.0.0.1]

The announcement here directly declares loopback and A1 The interface of , rejected A0 The interface of .（ In the video 1：09：00）

[R3]ospf 1

[R3-ospf-1]a 0

[R3-ospf-1-area-0.0.0.0]net

[R3-ospf-1-area-0.0.0.0]network 172.16.1.1 0.0.0.0

【R5】：

[R5]ospf 1 r

[R5]ospf 1 router-id 5.5.5.5

[R5-ospf-1]a 0

[R5-ospf-1-area-0.0.0.0]net

[R5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255

【R6】：
[R6]ospf 1 rou

[R6]ospf 1 router-id 6.6.6.6

[R6-ospf-1]a 0

[R6-ospf-1-area-0.0.0.0]net

[R6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.3.255

[R6-ospf-1-area-0.0.0.0]q

[R6-ospf-1]a 2

[R6-ospf-1-area-0.0.0.2]ne

[R6-ospf-1-area-0.0.0.2]network 172.16.65.1 0.0.0.0

[R6-ospf-1-area-0.0.0.2]

【R11】;

[R11]ospf 1 r

[R11]ospf 1 router-id 11.11.11.11

[R11-ospf-1]a 2

[R11-ospf-1-area-0.0.0.2]net

[R11-ospf-1-area-0.0.0.2]network 172.16.0.0 0.0.255.255

【R12】：

[R12]ospf 1 router-id 12.12.12.12

[R12-ospf-1]a 2

[R12-ospf-1-area-0.0.0.2]net

[R12-ospf-1-area-0.0.0.2]network 172.16.65.10 0.0.0.0

[R12-ospf-1-area-0.0.0.2]q

[R12-ospf-1]q

[R12]rip

[R12-rip-1]v 2

[R12-rip-1]ne

[R12-rip-1]network 172.16.0.0

【R7】

[R7]ospf 1 r

[R7]ospf 1 router-id 7.7.7.7

[R7-ospf-1]a 0

[R7-ospf-1-area-0.0.0.0]net

[R7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.7.255

[R7-ospf-1-area-0.0.0.0]a 3

[R7-ospf-1-area-0.0.0.3]net

[R7-ospf-1-area-0.0.0.3]network 172.16.97.1 0.0.0.0

【R8】

[R8]ospf 1 r

[R8]ospf 1 router-id 8.8.8.8

[R8-ospf-1]a 3

[R8-ospf-1-area-0.0.0.3]ne

[R8-ospf-1-area-0.0.0.3]network 172.16.0.0 0.0.255.255

【R9】

[R9]ospf 1 r

[R9]ospf 1 router-id 9.9.9.9

[R9-ospf-1]a 3

[R9-ospf-1-area-0.0.0.3]n

[R9-ospf-1-area-0.0.0.3]network 172.16.97.10 0.0.0.0

[R9-ospf-1-area-0.0.0.3]q

[R9-ospf-1]a 4

[R9-ospf-1-area-0.0.0.4]n

[R9-ospf-1-area-0.0.0.4]ne

[R9-ospf-1-area-0.0.0.4]network

[R9-ospf-1-area-0.0.0.4]network 172.16.128.0 0.0.3.255

[R9-ospf-1-area-0.0.0.4]

【R10】

[R10]ospf 1 r

[R10]ospf 1 router-id 10.10.10.10

[R10-ospf-1]a 4

[R10-ospf-1-area-0.0.0.4]n

[R10-ospf-1-area-0.0.0.4]network 172.16.0.0 0.0.255.255

[R10-ospf-1-area-0.0.0.4]

3、 ... and 、 Details ：

Modify the interface type ：P2MP

[R3]int t0/0/0

[R3-Tunnel0/0/0]ospf n

[R3-Tunnel0/0/0]ospf network-type p2mp

[R5]int t0/0/0

[R5-Tunnel0/0/0]ospf network-type p2mp

[R6]int t0/0/0

[R6-Tunnel0/0/0]ospf network-type p2mp

[R7]int t0/0/0

[R7-Tunnel0/0/0]ospf network-type p2mp

Neighborhood information ：

 

【R5】：

Routing information ：

 

3、 ... and 、 Reissue ：

[R12]ospf 1

[R12-ospf-1]im

[R12-ospf-1]import-route rip

Check whether to import ：

 

Solve the problem of no route in area 4 ：

Area  4 For irregular areas , Requirements exist ABR equipment , Next, link to area 0 below .

R9 Don't work ,1、 Use T The tunnel is complete ;（ Repeat updates , Poor route selection ）2、 Virtual link ;3、 Multi process bidirectional republication .

1,3 You can use . But it is best to use multi process one-way republishing .

【R9】

[R9]ospf 1

[R9-ospf-1]a 4

[R9-ospf-1-area-0.0.0.4]undo n

[R9-ospf-1-area-0.0.0.4]undo network 172.16.128.0 0.0.3.255

[R9-ospf-1-area-0.0.0.4]q

[R9-ospf-1]undo a 4

[R9-ospf-1]q

[R9]ospf 2

[R9-ospf-2]r

[R9-ospf-2]retransmission-limit

[R9-ospf-2]q

[R9]undo ospf 2

Warning: The OSPF process will be deleted. Continue? [Y/N]:y

[R9]ospf 2 r

[R9]ospf 2 router-id 9.9.9.9

[R9-ospf-2]undo a 3

[R9-ospf-2]a 4

[R9-ospf-2-area-0.0.0.4]n

[R9-ospf-2-area-0.0.0.4]network 172.16.128.0 0.0.3.255

[R9-ospf-2-area-0.0.0.4]

[R9-ospf-2-area-0.0.0.4]q

[R9-ospf-2]q

[R9]ospf 1

[R9-ospf-1]im

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

[R9-ospf-1]

testing ：

 

 

Four 、 Summary

   One 、 Inter domain routing summary ：

[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

 

Two 、 Extraterritorial routing summary

  [R12-ospf-1]asbr-summary 172.16.160.0 255.255.224.0

[R9-ospf-1]asbr-summary 172.16.128.0 255.255.224.0

testing ：

 

Class III and class V repeatedly send routing information

resolvent ：

[R1]os

[R1]ospf

[R1-ospf-1]a 1

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

[R2]ospf

[R2-ospf-1]a 1

[R2-ospf-1-area-0.0.0.1]stub

[R3]ospf

[R3-ospf-1]a 1

[R3-ospf-1-area-0.0.0.1]stub

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

testing ：

 

 

Completely non terminal area ：

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

[R7-ospf-1-area-0.0.0.3]nssa no-summary

[R8-ospf-1-area-0.0.0.3]nssa

[R9-ospf-1-area-0.0.0.3]nssa

testing ：

 

Complement the default

[R9]ospf 2

[R9-ospf-2]de

[R9-ospf-2]default

[R9-ospf-2]default-route-advertise

[R9-ospf-2]

 

Test the intranet ：

 

Modify the convergence rate ：
[R3-Tunnel0/0/0]ospf timer hello 10

[R5-Tunnel0/0/0]ospf timer hello 10

[R6-Tunnel0/0/0]ospf timer hello 10

[R7-Tunnel0/0/0]ospf timer hello 10

Air interface anti loop routing ：

[R3]ip route-static 172.16.32.0 255.255.224.0 NULL 0

[R6]ip route-static 172.16.64.0 255.255.224.0 NULL 0

[R7]ip route-static 172.16.96.0 255.255.224.0 NULL 0

[R9]ip route-static 172.16.128.0 255.255.224.0 NULL 0

[R12]ip route-static 172.16.160.0 255.255.224.0 NULL 0

NAT mapping ：

[R3]acl 2000

[R3-acl-basic-2000]ru

[R3-acl-basic-2000]rule p

[R3-acl-basic-2000]rule permit s

[R3-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255

[R3-acl-basic-2000]q

[R3]int s 4/0/0

[R3-Serial4/0/0]nat ou

[R3-Serial4/0/0]nat outbound 2000

<R5>sys

Enter system view, return user view with Ctrl+Z.

[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

[R5-Serial4/0/0]q

[R5]

<R6>sys

Enter system view, return user view with Ctrl+Z.

[R6]acl 2000

[R6-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255

[R6-acl-basic-2000]

[R6-acl-basic-2000]q

[R6]int s4/0/0

[R6-Serial4/0/0]nat outbound 2000

[R6-Serial4/0/0]q

[R6]

[R7]acl 2000

[R7-acl-basic-2000]ru

[R7-acl-basic-2000]rule p

[R7-acl-basic-2000]rule permit s

[R7-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255

[R7-acl-basic-2000]q

[R7]int t0/0/0

[R7-Tunnel0/0/0]q

[R7]int g0/0/0

[R7-GigabitEthernet0/0/0]nat ou

[R7-GigabitEthernet0/0/0]nat outbound 2000

[R7-GigabitEthernet0/0/0]