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6. CONFIGURE EIGRP AUTHENTICATION (MD5)

HOW TO CONFIGURE EIGRP STUB
 
Interface IP Address Configuration  
  
R1  
  
Interface   IP Address   Subnet Mask  
S 0            2.2.2.1           255.0.0.0  
E 0            10.1.1.1         255.0.0.0  
  
R2  
  
Interface   IP Address    Subnet Mask  
S 1/0         2.2.2.2            255.0.0.0  
S1             3.3.3.1             255.0.0.0  
E 0/0         20.1.1.1          255.0.0.0  
  
R3  
  
Interface         IP Address      Subnet Mask  
S 1/0               3.3.3.2              255.0.0.0  
E 0                   30.1.1.1           255.0.0.0  
Loopback 0   172.168.0.1     255.255.255.0  
Loopback 1   172.168.1.1     255.255.255.0  
Loopback 2   172.168.2.1     255.255.255.0  
Loopback 3   172.168.3.1     255.255.255.0 
 
 
Task 1  
  
Configure EIGRP AS 100 as per the above scenario on R1, R2 and R3. Disable auto- 
summary. Only one summary route must be advertised to R2 and R1  
  
R1                               
                                                                    
Router eigrp 100                 
Network 2.0.0.0                  
Network 10.0.0.0                 
No auto-summary                  
                                 
R2
 
Router eigrp 100
Network 2.0.0.0
Network 3.0.0.0
Network 20.0.0.0
No auto-summary
 
R3  
  
Router eigrp 100  
Network 3.0.0.0  
Network 30.0.0.0  
Network 172.168.0.0  
No auto-summary  
  
Interface s 1/0  
Ip summary-address eigrp 100 172.168.0.0 255.255.252.0
 
 
Verification:  
  
Without configuring stub in R3:   
  
R2#show ip route  
  
The output displays directly connected routes, summary route and Eigrp routes.
 
 
Task 2 :  
  
Configure Eigrp Stub on R3, preventing R3 to send any routes to R2, but R2 receives  
routes from R1.  
  
R3  
  
Router eigrp 100  
Eigrp stub receive-only  
  
Verification:  
  
R2#show ip route  
  
The output displays only network 10.0.0.0 (eigrp route) coming from R1 but no eigrp  
routes from R3.  
  
Task 3 :  
  
Configure Eigrp Stub on R3, allowing  R3 to send only connected routes to R2, but R2  
receives any routes from R1.
 
R3  
  
Router eigrp 100  
Eigrp stub connected  
  
 
Verification:  
  
R2#show ip route  
  
The output displays only connected eigrp routes from R3 to R2, but receives all routes  
from R1.
 
Task 4 :  
  
Configure Eigrp Stub on R3, allowing only summary routes from  R3 to R2, but R2  
receives any routes from R1.  
  
R3  
  
Router eigrp 100  
Eigrp stub summary  
  
  
Verification:  
  
R2#show ip route  
  
The output displays only summary route from R3, and also all routes from R1.  
  
 
Task 5 :  
  
Configure Eigrp Stub on R3, allowing connected and summary routes from R3 to R2, but  
R2 receives any routes from R1.
 
R3  
  
Router eigrp 100  
Eigrp stub   
  
  
Verification:  
  
R2#show ip route  
 
The output displays both connected and summary routes from R3 , as the command eigrp  
stub defaults to ”eigrp stub connected summary”.
 
 
 
Task 6 :
 

7. CONFIGURE EIGRP STUB2

Interface IP Address Configuration  
  
R1  
  
Interface   IP Address  Subnet Mask  
S 0             2.2.2.1          255.0.0.0  
E 0           10.1.1.1         255.0.0.0  
  
R2  
  
Interface   IP Address    Subnet Mask  
S 1/0         2.2.2.2            255.0.0.0  
S1/1          3.3.3.1            255.0.0.0  
E 0/0         20.1.1.1         255.0.0.0
 
R3  
  
Interface          IP Address       Subnet Mask  
S 1/0                 3.3.3.2              255.0.0.0  
E 0                    30.1.1.1            255.0.0.0  
Loopback 0    172.168.0.1     255.255.255.0  
Loopback 1    172.168.1.1     255.255.255.0  
Loopback 2    172.168.2.1     255.255.255.0  
Loopback 3    172.168.3.1     255.255.255.0  
  
R4  
  
Interface     IP Address      Subnet Mask  
Fa 0/0        30.1.1.2        255.0.0.0  
Fa 0/1        40.1.1.1        255.0.0.0 
 
Configure EIGRP in AS 100 on R1, R2, R3. Advertise only interface fa0/0 on R4 in  
EIGRP AS 100. Configure static route in R3 to reach network 40.0.0.0 via 30.1.1.1.  
Redistribute the static route in EIGRP AS 100.  
  
R3  
  
Ip route 40.0.0.0 255.0.0.0 30.1.1.2  
  
Router eigrp 100  
Redistribute static metric 10 10 10 10 10   
Eigrp stub static  
  
  
Verification:   
  
R2#show ip route
  
The output displays only directly connected of R1, R2 and redistributed static route from  
R3, but blocking connected routes and summary routes from R3.  
  
The output also displays the redistributed route as an external EIGRP route with AD 170

 

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