Summarization in eigrp routing

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Summarization


1. Summarization is Used for to convert multiple root into single root

2. Summarization is marge the multiple network and create single network

3. Advantage of summarization is fast conversion, high speed, easily update routing tables and low series router is also support multiple network.


First take Router's, loopback and ip's according to the diagram





Here maximum ip's are in first router
loopback ip are
                    loopback 1=172.16.97.1 to loopback 10 =172.16.106.1

Rules of summarization

     Now configuration in Router

     First Basic configuration

      Go to first router 
Go to first router in cli mode and type
          No
          Router>en
          Router#conf t
          Router(config)#int s0/0
          Router(config-if)#ip address 192.168.30.1 255.255.255.0
          Router(config-if)#no shut
          Router(config-if)#clock rate 64000
          Router(config-if)#exit

         NOW configure Loopback's ip

          Router(config)#int l 0
         Router(config-if)#ip address 192.168.10.1 255.255.255.0
   Router(config-if)#no shut
          Router(config-if)#exit

          Router(config)#int l 1
         Router(config-if)#ip address 172.16.97.1 255.255.255.0
   Router(config-if)#no shut
          Router(config-if)#exit


          Router(config)#int l 2
         Router(config-if)#ip address 172.16.98.1 255.255.255.0
   Router(config-if)#no shut
          Router(config-if)#exit


          Router(config)#int l 3
         Router(config-if)#ip address 172.16.99.1 255.255.255.0
   Router(config-if)#no shut
          Router(config-if)#exit


          Router(config)#int l 4
         Router(config-if)#ip address 172.16.100.1 255.255.255.0
   Router(config-if)#no shut
          Router(config-if)#exit


          Router(config)#int l 5
         Router(config-if)#ip address 172.16.101.1 255.255.255.0
   Router(config-if)#no shut
          Router(config-if)#exit


          Router(config)#int l 6
         Router(config-if)#ip address 172.16.102.1 255.255.255.0
   Router(config-if)#no shut
          Router(config-if)#exit


          Router(config)#int l 7
         Router(config-if)#ip address 172.16.103.1 255.255.255.0
         Router(config-if)#no shut
          Router(config-if)#exit


          Router(config)#int l 8
         Router(config-if)#ip address 172.16.104.1 255.255.255.0
   Router(config-if)#no shut
          Router(config-if)#exit

        
         Router(config)#int l 9
         Router(config-if)#ip address 172.16.105 255.255.255.0
   Router(config-if)#no shut
          Router(config-if)#exit

        
         Router(config)#int l 10
         Router(config-if)#ip address 172.16.106 255.255.255.0

         Router(config-if)#no shut
          Router(config-if)#exit


Go to second router in cli mode
          No
          Router>en
          Router#conf t
          Router(config)#int s0/0
          Router(config-if)#ip address 192.168.30.2 255.255.255.0
          Router(config-if)#no shut
          Router(config-if)#exit

          Router(config)#int s0/1
          Router(config-if)#ip address 192.168.40.1 255.255.255.0
          Router(config-if)#no shut
          Router(config-if)#clock rate 64000
          Router(config-if)#exit

          Router(config)#int l0
          Router(config-if)#ip address 192.168.20.1 255.255.255.0
          Router(config-if)#no shut
          Router(config-if)#exit

Go to Third router in cli mode
          No
    Router>en
          Router#conf t 
         Router(config)#int s0/0
   Router(config-if)#ip address 192.168.40.2 255.255.255.0
          Router(config-if)#no shut
          Router(config-if)#exit

          Router(config)#int l0
          Router(config-if)#ip address 192.168.50.1 255.255.255.0
          Router(config-if)#no shut
          Router(config-if)#exit


Step 2 Routing  

In First Router
First check network in (Router# Show ip route)
Then type
Router#conf t
Router(config)#router eigrp 10
Router(config-router)#network 192.168.10.0
Router(config-router)#network 192.168.30.0
Router(config-router)#network 172.16.0.0

In Second router
Router# Show ip route
Router#conf t
Router(config)#router eigrp 10
Router(config-router)#network 192.168.20.0
Router(config-router)#network 192.168.30.0
Router(config-router)#network 192.168.40.0

In Third router
Router# Show ip route
Router#conf t
Router(config)#router eigrp 10
Router(config-router)#network 192.168.40.0
Router(config-router)#network 192.168.50.0

Step 2 Summarization


Summarization is configure on another all other connected router in other port.
in these condition go to router 2 in s0/1
commands are

         
 Router#conf t
          Router(config)#int s0/1
         Router(config-if)#Ip summary-address eigrp 10 172.16.96.0 255.255.255.0

         Router(config-if)#exit
         NOW FOR refresh 
        Go to Third router
         Router#clear ip route
   
     To check ping from third router to all loopback ip's as shown in picture

     

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