How To Configure EIGRP On Cisco Router Step By Step Guide – 4 Routers

How to configure eigrp on cisco router step by step - 4 Routers

In this lab, I am gonna teach you How To Configure EIGRP On Cisco Router Step By Step Guide – 4 Routers

Configure EIGRP On Cisco Router – VLSM

Given Network: 192.168.0.0

1) Required hosts on Router 1= 100

2) Required hosts on Router 2= 30

3) Required hosts on Router 3= 6

4) Required hosts on Router 4= 1

How To Configure EIGRP On Cisco Router Step By Step Guide - 4 Routers

R1<= 100

100<= 2n – 2

100<= 27 – 2

100<= 128 – 2

100<= 126

Total number of network bits = 32

32 – n = 32 – 7 = 25 (CIDR value of given network i.e. Router 1)

i.e. 192.168.0.0/25

N.S.M = 11111111. 11111111. 11111111.10000000

                        = 255.255.255.128

Block Size       = 256 – N.S.M

                        = 256 – 128 = 128

Note: Add this block size in given network so that we can get our new network for Router 2.

So the new network is 192.168.0.128/?

Now find FVH, LVH and Broadcast address

Given Network19216800
First Valid Host-FVH19216801
Last Valid Host-LVH1921680126
Broadcast1921680127
New Network1921680128

R2<= 30

30<= 2n – 2

30<= 25 – 2

30<= 32 – 2

30<= 30

Total number of network bits = 32

32 – n = 32 – 5 = 27 (CIDR value of given network i.e. Router 2)

i.e. 192.168.0.128/27

N.S.M = 11111111. 11111111. 11111111.11100000

                        = 255.255.255.224

Block Size       = 256 – N.S.M

                        = 256 – 224 = 32

Note: Add this block size in given network so that we can get our new network for Router 3.

So the new network is 192.168.0.160/?

Now find FVH, LVH and Broadcast address

Given Network1921680128
First Valid Host-FVH1921680129
Last Valid Host-LVH1921680158
Broadcast1921680159
New Network1921680160

R3<= 6

6<= 2n – 2

6<= 23 – 2

6<= 8 – 2

6<= 6

Total number of network bits = 32

32 – n = 32 – 3 = 29 (CIDR value of given network i.e. Router 3)

i.e. 192.168.0.160/29

N.S.M = 11111111. 11111111. 11111111.11111000

                        = 255.255.255.248

Block Size       = 256 – N.S.M

                        = 256 – 248 = 8

Note: Add this block size in given network so that we can get our new network for Router 4.

So the new network is 192.168.0.168/?

Now find FVH, LVH and Broadcast address

Given Network1921680160
First Valid Host-FVH1921680161
Last Valid Host-LVH1921680165
Broadcast1921680167
New Network1921680168

R4 <= 1

1 <= 2n – 2

1 <= 22 – 2

1 <= 4 – 2

1 <= 2

Total number of network bits = 32

32 – n = 32 – 2 = 30 (CIDR of given network i.e. Router 4)

i.e. 192.168.0.168/30

N.S.M = 11111111.11111111.11111111.11111100

= 255.255.255.252

Block Size       = 256 – N.S.M

= 256 – 252 = 4

Note: Add this block size in given network so that we can get our new network for Router 1 and 2 (Virtual Network).

so the new network is 192.168.0.172/?

Now find FVH, LVH and Broadcast address

Given Network1921680168
First Valid Host-FVH1921680169
Last Valid Host-LVH1921680170
Broadcast1921680171
New Network1921680172

Router 1 & 2 <= 2 hosts (we required only two IP to connect 2 routers)

2 <= 2n – 2

2 <= 22 – 2

2 <= 4 – 2

2 <= 2

Total number of network bits = 32

32 – n = 32 – 2 = 30 (CIDR of Virtual network (R1&R2)

i.e. 192.168.0.172/30

N.S.M = 11111111.11111111.11111111.11111100

= 255.255.255.252

Block Size       = 256 – N.S.M

= 256 – 252 = 4

Note: Add this block size in given network so that we can get our new network for Router 2 and 3 (Virtual Network).

so the new network is 192.168.0.176/?

Now find FVH, LVH and Broadcast address

Given Network1921680172
First Valid Host-FVH1921680173
Last Valid Host-LVH1921680174
Broadcast1921680175
New Network1921680176

Router 2 & 3 <= 2 hosts (we required only two IP to connect 2 routers)

2 <= 2n – 2

2 <= 22 – 2

2 <= 4 – 2

2 <= 2

Total number of network bits = 32

32 – n = 32 – 2 = 30 (CIDR of Virtual network (R2&R3)

i.e. 192.168.0.176/30

N.S.M = 11111111.11111111.11111111.11111100

= 255.255.255.252

Block Size       = 256 – N.S.M

= 256 – 252 = 4

Note: Add this block size in given network so that we can get our new network for Router 3 and 4 (Virtual Network).

so the new network is 192.168.0.180/?

Now find FVH, LVH and Broadcast address

Given Network1921680176
First Valid Host-FVH1921680177
Last Valid Host-LVH1921680178
Broadcast1921680179
New Network1921680180

Router 3 & 4 <= 2 hosts (we required only two IP to connect 2 routers)

2 <= 2n – 2

2 <= 22 – 2

2 <= 4 – 2

2 <= 2

Total number of network bits = 32

32 – n = 32 – 2 = 30 (CIDR of Virtual network (R2&R3)

i.e. 192.168.0.180/30

N.S.M = 11111111.11111111.11111111.11111100

= 255.255.255.252

Block Size       = 256 – N.S.M

= 256 – 252 = 4

Note: Add this block size in given network so that we can get our new network for Router 5. This network can be used in future.

so the new network is 192.168.0.184/?

Now find FVH, LVH and Broadcast address

Given Network1921680180
First Valid Host-FVH1921680181
Last Valid Host-LVH1921680182
Broadcast1921680183
New Network1921680184

Basic Configuration On Router 1

Router>enable
Router#configure terminal
Router(config)#hostname R1
R1(config)#interface fastEthernet 0/0
R1(config-if)#ip address 192.168.0.1 255.255.255.128
R1(config-if)#no shutdown
R1(config-if)#exit  

R1(config)#interface serial 0/0/0
R1(config-if)#ip address 192.168.0.173 255.255.255.252
R1(config-if)#clock rate 64000
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#exit
R1#write

Basic Configuration On Router 2

Router>enable
Router#configure terminal
Router(config)#hostname R2
R2(config)#interface fastEthernet 0/0
R2(config-if)#ip address 192.168.0.129 255.255.255.224
R2(config-if)#no shutdown
R2(config-if)#exit  

R2(config)#interface serial 0/1/0
R2(config-if)#ip address 192.168.0.174 255.255.255.252
R2(config-if)#no shutdown
R2(config-if)#exit  

R2(config)#interface serial 0/0/0
R2(config-if)#ip address 192.168.0.177 255.255.255.252
R2(config-if)#clock rate 64000
R2(config-if)#no shutdown
R2(config-if)#exit
R2(config)#exit
R2#write

Basic Configuration On Router 3

Router>enable
Router#configure terminal
Router(config)#hostname R3
R3(config)#interface fastEthernet 0/0
R3(config-if)#ip address 192.168.0.161 255.255.255.248
R3(config-if)#no  shutdown
R3(config-if)#exit  

R3(config)#interface serial 0/1/0
R3(config-if)#ip address 192.168.0.178 255.255.255.252
R3(config-if)#no  shutdown
R3(config-if)#exit  

R3(config)#interface serial 0/0/0
R3(config-if)#ip address 192.168.0.181 255.255.255.252
R3(config-if)#clock rate 64000
R3(config-if)#no shutdown
R3(config-if)#exit
R3(config)#exit
R3#write

Basic Configuration On Router 4

Router>enable
Router#configure terminal
Router(config)#hostname R4
R4(config)#interface fastEthernet 0/0
R4(config-if)#ip address 192.168.0.169 255.255.255.252
R4(config-if)#no shutdown
R4(config-if)#exit  

R4(config)#interface serial 0/1/0
R4(config-if)#ip address 192.168.0.182 255.255.255.252
R4(config-if)#no shutdown
R4(config-if)#exit
R4(config)#exit
R4#write
How To Configure EIGRP On Cisco Router Step By Step Guide - 4 Routers

Configure EIGRP On Cisco RouterEIGRP Configuration on Router 1

R1>enable
R1#show ip route connected  
C   192.168.0.0/25  is directly connected, FastEthernet0/0  
C   192.168.0.172/30  is directly connected, Serial0/0/0
 
R1#configure terminal
R1(config)#router eigrp 10
R1(config-router)#no auto-summary
R1(config-router)#network 192.168.0.0                   255.255.255.128
R1(config-router)#network 192.168.0.172               255.255.255.252
R1(config-router)#exit
R1(config)#exit
R1#write

Configure EIGRP On Cisco Router – EIGRP Configuration on Router 2

R2>enable
R2#show ip route connected  
C   192.168.0.128/27  is directly connected, FastEthernet0/0  
C   192.168.0.172/30  is directly connected, Serial0/1/0  
C   192.168.0.176/30  is directly connected, Serial0/0/0  

R2#configure terminal
R2(config)#router eigrp 10
R2(config-router)#no auto-summary
R2(config-router)#network 192.168.0.128               255.255.255.224
R2(config-router)#network 192.168.0.172               255.255.255.252
R2(config-router)#network 192.168.0.176               255.255.255.252
R2(config-router)#exit
R2(config)#exit
R2#write

Configure EIGRP On Cisco Router – EIGRP Configuration on Router 3

R3>enable
R3#show ip route connected  
C   192.168.0.160/29  is directly connected, FastEthernet0/0  
C   192.168.0.176/30  is directly connected, Serial0/1/0  
C   192.168.0.180/30  is directly connected, Serial0/0/0  

R3#configure terminal
R3(config)#router eigrp 10
R3(config-router)#no auto-summary
R3(config-router)#network 192.168.0.160               255.255.255.248
R3(config-router)#network 192.168.0.176               255.255.255.252
R3(config-router)#network 192.168.0.180               255.255.255.252
R3(config-router)#exit
R3(config)#exit
R3#write

Configure EIGRP On Cisco Router – EIGRP Configuration on Router 4

R4>enable
R4#show ip route connected  
C   192.168.0.168/30  is directly connected, FastEthernet0/0  
C   192.168.0.180/30  is directly connected, Serial0/1/0  
R4#configure terminal
R4(config)#router eigrp 10
R4(config-router)#no auto-summary
R4(config-router)#network 192.168.0.168               255.255.255.252
R4(config-router)#network 192.168.0.180               255.255.255.252
R4(config-router)#exit
R4(config)#exit
R4#write

Verification on Router 1

R1#show ip route     
192.168.0.0/24 is variably subnetted, 7 subnets, 4 masks
C       192.168.0.0/25 is directly connected, FastEthernet0/0
D       192.168.0.128/27 [90/2172416] via 192.168.0.174, 00:02:03, Serial0/0/0
D       192.168.0.160/29 [90/2684416] via 192.168.0.174, 00:01:12, Serial0/0/0
D       192.168.0.168/30 [90/3196416] via 192.168.0.174, 00:00:19, Serial0/0/0
C       192.168.0.172/30 is directly connected, Serial0/0/0
D       192.168.0.176/30 [90/2681856] via 192.168.0.174, 00:01:58, Serial0/0/0
D       192.168.0.180/30 [90/3193856] via 192.168.0.174, 00:01:02, Serial0/0/0

Verification on Router 2

R2#show ip route     
192.168.0.0/24 is variably subnetted, 7 subnets, 4 masks
D       192.168.0.0/25 [90/2172416] via 192.168.0.173, 00:02:17, Serial0/1/0
C       192.168.0.128/27 is directly connected, FastEthernet0/0
D       192.168.0.160/29 [90/2172416] via 192.168.0.178, 00:01:26, Serial0/0/0
D       192.168.0.168/30 [90/2684416] via 192.168.0.178, 00:00:33, Serial0/0/0
C       192.168.0.172/30 is directly connected, Serial0/1/0
C       192.168.0.176/30 is directly connected, Serial0/0/0
D       192.168.0.180/30 [90/2681856] via 192.168.0.178, 00:01:16, Serial0/0/0

Verification on Router 3

R3#show ip route     
192.168.0.0/24 is variably subnetted, 7 subnets, 4 masks
D       192.168.0.0/25 [90/2684416] via 192.168.0.177, 00:01:40, Serial0/1/0
D       192.168.0.128/27 [90/2172416] via 192.168.0.177, 00:01:40, Serial0/1/0
C       192.168.0.160/29 is directly connected, FastEthernet0/0
D       192.168.0.168/30 [90/2172416] via 192.168.0.182, 00:00:47, Serial0/0/0
D       192.168.0.172/30 [90/2681856] via 192.168.0.177, 00:01:40, Serial0/1/0
C       192.168.0.176/30 is directly connected, Serial0/1/0
C       192.168.0.180/30 is directly connected, Serial0/0/0

Verification on Router 4

R4#show ip route     
192.168.0.0/24 is variably subnetted, 7 subnets, 4 masks
D       192.168.0.0/25 [90/3196416] via 192.168.0.181, 00:01:02, Serial0/1/0
D       192.168.0.128/27 [90/2684416] via 192.168.0.181, 00:01:02, Serial0/1/0
D       192.168.0.160/29 [90/2172416] via 192.168.0.181, 00:01:02, Serial0/1/0
C       192.168.0.168/30 is directly connected, FastEthernet0/0
D       192.168.0.172/30 [90/3193856] via 192.168.0.181, 00:01:02, Serial0/1/0
D       192.168.0.176/30 [90/2681856] via 192.168.0.181, 00:01:02, Serial0/1/0
C       192.168.0.180/30 is directly connected, Serial0/1/0
How To Configure EIGRP On Cisco Router Step By Step Guide - 4 Routers

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