MGRE (OSPF) comprehensive experiment

Enterprise 2023-09-17 02:22:36 views: null

Experimental requirements

1. R6 is an ISP that can only configure IP addresses. The loopback of R1-R5 is a private network segment    
2. R1/4/5 is a fully connected MGRE structure. R1/2/3 is a star topology, and r1 is the center. Site    
3. All private network segments can communicate with each other. The private network segments are completed using OSPF.

Step One: IP Address Planning

equipment interface URL
R1  g0/0/1 61.1.1.1 24
g0/0/0 16.1.1.1 24
lookback0 192.168.1.1 24
R2 g0/0/0 26.1.1.2 24
lookback0 192.168.2.1 24
R3 g0/0/0 

36.1.1.3 24
lookback0 192.168.3.1 24
R4 g0/0/0 46.1.1.4 24
lookback0 192.168.4.1 24
R5 g0/0/0 56.1.1.5 24
lookback0 192.168.5.1 24
R6 g0/0/1 61.1.1.6 24
g0/0/0 16.1.1.6 24
g0/0/2 26.1.1.6 24
g2/0/0 36.1.1.6 24
g3/0/0 46.1.1.6 24
g4/0/0 56.1.1.6 24
lookback0 6.6.6.6 24

Step 2: Configure IP address

RI configuration

Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              16.1.1.1/24          up         up        
GigabitEthernet0/0/1              61.1.1.1/24          up         up        
GigabitEthernet0/0/2              unassigned           down       down      
GigabitEthernet4/0/0              unassigned           down       down      
LoopBack0                         192.168.1.1/24       up         up(s)     
NULL0                             unassigned           up         up(s)     
Tunnel0/0/0                       10.1.1.1/24          up         up        
Tunnel0/0/1                       20.1.1.1/24          up         up

R2 configuration

Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              26.1.1.2/24          up         up        
GigabitEthernet0/0/1              unassigned           down       down      
GigabitEthernet0/0/2              unassigned           down       down      
LoopBack0                         192.168.2.1/24       up         up(s)     
NULL0                             unassigned           up         up(s)     
Tunnel0/0/0                       unassigned           up         down      
Tunnel0/0/1                       20.1.1.2/24          up         up

R3 configuration

Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              36.1.1.3/24          up         up        
GigabitEthernet0/0/1              unassigned           down       down      
GigabitEthernet0/0/2              unassigned           down       down      
LoopBack0                         192.168.3.1/24       up         up(s)     
NULL0                             unassigned           up         up(s)     
Tunnel0/0/1                       20.1.1.3/24          up         up

R4 configuration

Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              46.1.1.4/24          up         up        
GigabitEthernet0/0/1              unassigned           down       down      
GigabitEthernet0/0/2              unassigned           down       down      
LoopBack0                         192.168.4.1/24       up         up(s)     
NULL0                             unassigned           up         up(s)     
Tunnel0/0/0                       10.1.1.4/24          up         up

R5 configuration

Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              56.1.1.5/24          up         up        
GigabitEthernet0/0/1              unassigned           down       down      
GigabitEthernet0/0/2              unassigned           down       down      
LoopBack0                         192.168.5.1/24       up         up(s)     
NULL0                             unassigned           up         up(s)     
Tunnel0/0/0                       10.1.1.5/24          up         up

R6 configuration

Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              16.1.1.6/24          up         up        
GigabitEthernet0/0/1              61.1.1.6/24          up         up        
GigabitEthernet0/0/2              26.1.1.6/24          up         up        
GigabitEthernet2/0/0              36.1.1.6/24          up         up        
GigabitEthernet3/0/0              46.1.1.6/24          up         up        
GigabitEthernet4/0/0              56.1.1.6/24          up         up        
LoopBack0                         6.6.6.6/24           up         up(s)     
NULL0                             unassigned           up         up(s)

Step 2: Default route

[R1]ip route-static 0.0.0.0 0 16.1.1.6
[R2]ip route-static 0.0.0.0 0 26.1.1.6
[R3]ip route-static 0.0.0.0 0 36.1.1.6
[R4]ip route-static 0.0.0.0 0 46.1.1.6
[R5]ip route-static 0.0.0.0 0 56.1.1.6

Step 3: ACL

R1 configuration

[r1]acl 2000
[r1-acl-basic-2000]rule 1 permit source any 
[r1]int g 0/0/0
[r1-GigabitEthernet0/0/0]nat outbound 2000

R2 configuration

[r2]acl 2000
[r2-acl-basic-2000]rule 1 permit source any 
[r2]int g 0/0/0
[r2-GigabitEthernet0/0/0]nat outbound 2000

R3 configuration

[r3]acl 2000
[r3-acl-basic-2000]rule 1 permit source any 
[r3]int g 0/0/0
[r3-GigabitEthernet0/0/0]nat outbound 2000

R4 configuration

[r4]acl 2000
[r4-acl-basic-2000]rule 1 permit source any 
[r4]int g 0/0/0
[r4-GigabitEthernet0/0/0]nat outbound 2000

R5 configuration

[r5]acl 2000
[r5-acl-basic-2000]rule 1 permit source any 
[r5]int g 0/0/0
[r5-GigabitEthernet0/0/0]nat outbound 2000

Step 4: Configure the MGRE environment

R1 configuration

[r1]interface Tunnel 0/0/0
[r1-Tunnel0/0/0]ip address 10.1.1.1 24	
[r1-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r1-Tunnel0/0/0]source 16.1.1.1	
[r1-Tunnel0/0/0]nhrp network-id 100
[r1-Tunnel0/0/0]nhrp entry 10.1.1.4 46.1.1.4 register
[r1-Tunnel0/0/0]nhrp entry 10.1.1.5 56.1.1.5 register

R4 configuration

[r4]interface Tunnel 0/0/0
[r4-Tunnel0/0/0]ip address 10.1.1.4 24
[r4-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r4-Tunnel0/0/0]source 46.1.1.4
[r4-Tunnel0/0/0]nhrp entry 10.1.1.1 16.1.1.1 register 
[r4-Tunnel0/0/0]nhrp entry 10.1.1.5 56.1.1.5 register 
[r4-Tunnel0/0/0]nhrp network-id 100

R5 configuration

[r5]interface Tunnel 0/0/0
[r5-Tunnel0/0/0]ip address 10.1.1.5 24
[r5-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r5-Tunnel0/0/0]source 56.1.1.5	
[r5-Tunnel0/0/0]nhrp entry 10.1.1.4 46.1.1.4 register 
[r5-Tunnel0/0/0]nhrp entry 10.1.1.1 16.1.1.1 register 
[r5-Tunnel0/0/0]nhrp network-id 100

Step 6: Configure MGRE environment on R1/2/3

R1 configuration

[r1]interface Tunnel 0/0/1
[r1-Tunnel0/0/1]ip address 20.1.1.1 24
[r1-Tunnel0/0/1]tunnel-protocol gre p2mp 
[r1-Tunnel0/0/1]source 61.1.1.1
[r1-Tunnel0/0/1]nhrp network-id 101

R2 configuration

[r2]interface Tunnel 0/0/1	
[r2-Tunnel0/0/1]ip address 20.1.1.2 24
[r2-Tunnel0/0/1]tunnel-protocol gre p2mp 
[r2-Tunnel0/0/1]source g 0/0/0
[r2-Tunnel0/0/1]nhrp entry 20.1.1.1 61.1.1.1 re	
[r2-Tunnel0/0/1]nhrp network-id 101

R3 configuration

[r3]interface Tunnel 0/0/1
[r3-Tunnel0/0/1]ip address 20.1.1.3 24
[r3-Tunnel0/0/1]tunnel-protocol gre p2mp 
[r3-Tunnel0/0/1]source g 0/0/0
[r3-Tunnel0/0/1]nhrp entry 20.1.1.1 61.1.1.1 register 
[r3-Tunnel0/0/1]nhrp network-id 101

Step 7: Write OSPF

R1 configuration

[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255
[r1-ospf-1-area-0.0.0.0]network 20.1.1.0 0.0.0.255
[r1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255

R2 configuration

[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]area 0
[r2-ospf-1-area-0.0.0.0]network 20.1.1.0 0.0.0.255
[r2-ospf-1-area-0.0.0.0]network 192.168.2.0 0.0.0.255

R3 configuration

[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 
[r3-ospf-1-area-0.0.0.0]network 192.168.3.0 0.0.0.255
[r3-ospf-1-area-0.0.0.0]network 20.1.1.0 0.0.0.255

R4 configuration

[r4]ospf 1 router-id 4.4.4.4	
[r4-ospf-1]area 0
[r4-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255
[r4-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255

R5 configuration

[r5]ospf 1 router-id 5.5.5.5
[r5-ospf-1]area 0
[r5-ospf-1-area-0.0.0.0]network 192.168.5.0 0.0.0.255
[r5-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255

Step 8: Turn on broadcast

R4 configuration

[r4]interface Tunnel 0/0/0
[r4-Tunnel0/0/0]nhrp entry multicast dynamic

R5 configuration

[r5]interface Tunnel 0/0/0
[r5-Tunnel0/0/0]nhrp entry multicast dynamic

Step 9: Modify p2p to bordcast

R1 configuration

[r1]interface Tunnel 0/0/1
[r1-Tunnel0/0/1]ospf network-type broadcast 
[r1]interface Tunnel 0/0/0
[r1-Tunnel0/0/1]ospf network-type broadcast

R2 configuration

[r2]interface Tunnel 0/0/1
[r2-Tunnel0/0/1]ospf network-type broadcast

R3 configuration

[r3]interface Tunnel 0/0/1
[r3-Tunnel0/0/1]ospf network-type broadcast

R4 configuration

[r4]interface Tunnel 0/0/0
[r4-Tunnel0/0/0]ospf network-type broadcast

R5 configuration

[r5]interface Tunnel 0/0/0
[r5-Tunnel0/0/0]ospf network-type broadcast

Step 10: Modify priority

R2 configuration

[r2]interface Tunnel 0/0/1
[r2-Tunnel0/0/1]ospf dr-priority 0

R3 configuration

[r3]interface Tunnel 0/0/1
[r3-Tunnel0/0/1]ospf dr-priority 0

Step 11: Check

R1 view

<r1>display ip routing-table protocol ospf 
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : OSPF
         Destinations : 4        Routes : 4        

OSPF routing table status : <Active>
         Destinations : 4        Routes : 4

Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

    192.168.2.1/32  OSPF    10   1562        D   20.1.1.2        Tunnel0/0/1
    192.168.3.1/32  OSPF    10   1562        D   20.1.1.3        Tunnel0/0/1
    192.168.4.1/32  OSPF    10   1562        D   10.1.1.4        Tunnel0/0/0
    192.168.5.1/32  OSPF    10   1562        D   10.1.1.5        Tunnel0/0/0

OSPF routing table status : <Inactive>
         Destinations : 0        Routes : 0
 

R2 check

<r2>display ip routing-table protocol ospf 
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : OSPF
         Destinations : 4        Routes : 4        

OSPF routing table status : <Active>
         Destinations : 4        Routes : 4

Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

       10.1.1.0/24  OSPF    10   3124        D   20.1.1.1        Tunnel0/0/1
    192.168.1.1/32  OSPF    10   1562        D   20.1.1.1        Tunnel0/0/1
    192.168.3.1/32  OSPF    10   1562        D   20.1.1.3        Tunnel0/0/1
    192.168.5.1/32  OSPF    10   3124        D   20.1.1.1        Tunnel0/0/1

OSPF routing table status : <Inactive>
         Destinations : 0        Routes : 0

R3 check

<r3>display ip routing-table protocol ospf 
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : OSPF
         Destinations : 5        Routes : 5        

OSPF routing table status : <Active>
         Destinations : 5        Routes : 5

Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

       10.1.1.0/24  OSPF    10   3124        D   20.1.1.1        Tunnel0/0/1
    192.168.1.1/32  OSPF    10   1562        D   20.1.1.1        Tunnel0/0/1
    192.168.2.1/32  OSPF    10   1562        D   20.1.1.2        Tunnel0/0/1
    192.168.4.1/32  OSPF    10   3124        D   20.1.1.1        Tunnel0/0/1
    192.168.5.1/32  OSPF    10   3124        D   20.1.1.1        Tunnel0/0/1

OSPF routing table status : <Inactive>
         Destinations : 0        Routes : 0

R4 check

<r4>display ip routing-table protocol ospf 
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : OSPF
         Destinations : 5        Routes : 5        

OSPF routing table status : <Active>
         Destinations : 5        Routes : 5

Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

       20.1.1.0/24  OSPF    10   3124        D   10.1.1.1        Tunnel0/0/0
    192.168.1.1/32  OSPF    10   1562        D   10.1.1.1        Tunnel0/0/0
    192.168.2.1/32  OSPF    10   3124        D   10.1.1.1        Tunnel0/0/0
    192.168.3.1/32  OSPF    10   3124        D   10.1.1.1        Tunnel0/0/0
    192.168.5.1/32  OSPF    10   1562        D   10.1.1.5        Tunnel0/0/0

OSPF routing table status : <Inactive>
         Destinations : 0        Routes : 0

R5 inspection

<r5>display ip routing-table protocol ospf 
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : OSPF
         Destinations : 5        Routes : 5        

OSPF routing table status : <Active>
         Destinations : 5        Routes : 5

Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

       20.1.1.0/24  OSPF    10   3124        D   10.1.1.1        Tunnel0/0/0
    192.168.1.1/32  OSPF    10   1562        D   10.1.1.1        Tunnel0/0/0
    192.168.2.1/32  OSPF    10   3124        D   10.1.1.1        Tunnel0/0/0
    192.168.3.1/32  OSPF    10   3124        D   10.1.1.1        Tunnel0/0/0
    192.168.4.1/32  OSPF    10   1562        D   10.1.1.4        Tunnel0/0/0

OSPF routing table status : <Inactive>
         Destinations : 0        Routes : 0
 

Step 12: Detection

 The detection is successful and all private network segments can communicate with each other! ! !

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Origin blog.csdn.net/2301_77475090/article/details/131866449
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