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3. CONFIGURE IS-IS ROUTE SUMMARIZATION

HOW TO IS-IS ROUTE SUMMARIZATION CONFIGURATION
 
Interface IP Address Configuration  
   
R1  
   
Interface   IP Address   Subnet Mask  
S 5/0          2.2.2.1          255.0.0.0  
Fa 0/0       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  
E 0/0               20.1.1.1             255.0.0.0  
Loopback 0   192.168.0.1      255.255.255.0  
Loopback 1   192.168.1.1      255.255.255.0  
Loopback 2   192.168.2.1      255.255.255.0  
Loopback 3   192.168.3.1      255.255.255.0  
     
   
Task 1  
   
  Configure IS-IS in multiple areas. Configure R1 ( S5/0, FA0/0 ) in ISIS Area 1 and R2 (  
  S1/0, E0/0 ) in ISIS Area 2.  
   
  Configure Loopbacks on R2 and only summarized route should be sent to R1.
 
R1  
   
Int fa0/0  
Ip router isis
Isis circuit-type level-1  
  
Int s5/0  
Ip router isis  
Isis circuit-type level-1-2  
  
Router isis  
Net 49.0001.0000.0000.0001.00  
Is-type level-1-2  
  
  
R2  
 
Int e0/0  
Ip router isis  
Isis circuit-type level-1  
  
Int s1/0  
Ip router isis  
Isis circuit-type level-1-2  
  
Int Loopback 0  
Ip address 192.168.0.1 255.255.255.0  
Ip router isis  
Isis circuit-type level-1  
  
Int Loopback 1  
Ip address 192.168.1.1 255.255.255.0  
Ip router isis  
Isis circuit-type level-1  
  
Int Loopback 2  
Ip address 192.168.2.1 255.255.255.0  
Ip router isis  
Isis circuit-type level-1  
  
Int Loopback 3  
Ip address 192.168.3.1 255.255.255.0  
Ip router isis  
Isis circuit-type level-1
 
Router isis  
Net 49.0002.0000.0000.0002.00  
Is-type level-1-2  
Summary-address 192.168.0.0 255.255.252.0 level-2
 
 
Verification:  
  
R1#show ip route  
  
The output displays a reduced routing table which displays only the summarized route of  
loopback addresses from level-2 as indicated by “i L2” tag.  
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