How To Configure EIGRP | EIGRP Configuration

In this lab, I am gonna teach you How To Configure EIGRP | EIGRP Configuration

How To Configure EIGRP – VLSM

Given network: 210.100.50.0

Required hosts on Router 1= 50

Required hosts on Router 2= 12

R1<= 50

50<= 2n – 2

50<= 26 – 2

50<= 64 – 2

50<= 62

Total number of network bits = 32

32 – n = 32 – 6 = 26 (CIDR value of Given network i.e. Router 1)

i.e. 210.100.50.0/26

N.S.M = 11111111. 11111111. 11111111.11000000

                        = 255.255.255.192

Block size         = 256 – N.S.M

                        = 256 – 192 = 64

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

So the new network is 210.100.50.64/?

Now find FVH, LVH, and broadcast address

Given Network	210	100	50	0
First Valid Host-FVH	210	100	50	1
Last Valid Host-LVH	210	100	50	62
Broadcast	210	100	50	63
New Network	210	100	50	64

R2<= 12

12<= 2ⁿ – 2

12<= 2⁴ – 2

12<= 16 – 2

12<= 14

Total number of network bits = 32

32 – n = 32 – 4 = 28 (CIDR value of new network i.e. Router 2)

i.e. 210.100.50.64/28

N.S.M = 11111111. 11111111. 11111111.11110000

                        = 255.255.255.240

Block size        = 256 – N.S.M

                        = 256 – 240 = 16

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

So the new network is 210.100.50.80/?

Now find FVH, LVH, and broadcast address

Given Network	210	100	50	64
First Valid Host-FVH	210	100	50	65
Last Valid Host-LVH	210	100	50	78
Broadcast	210	100	50	79
New Network	210	100	50	80

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. 210.100.50.80/30

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. This network can be used in future.

so the new network is 210.100.50.84/?

Now find FVH, LVH, and broadcast address

Given Network	210	100	50	80
First Valid Host-FVH	210	100	50	81
Last Valid Host-LVH	210	100	50	82
Broadcast	210	100	50	83
New Network	210	100	50	84

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 210.100.50.1 255.255.255.192 R1(config-if)#no  shutdown R1(config-if)#exit   R1(config)#interface serial 0/0/0 R1(config-if)#ip address 210.100.50.81 255.255.255.252 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 210.100.50.65 255.255.255.240 R2(config-if)#no  shutdown R2(config-if)#exit   R2(config)#interface serial 0/1/0 R2(config-if)#ip address 210.100.50.82 255.255.255.252 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#exit R2#write

How To Configure EIGRP – EIGRP Configuration on Router 1  

R1>enable R1#show ip route connected   C   210.100.50.0/26  is directly connected, FastEthernet0/0   C   210.100.50.80/30  is directly connected, Serial0/0/0   R1#configure terminal R1(config)#router eigrp 50 R1(config-router)#no auto-summary R1(config-router)#network 210.100.50.0      255.255.255.192 R1(config-router)#network 210.100.50.80    255.255.255.252 R1(config-router)#exit R1(config)#exit R1#write

How To Configure EIGRP – EIGRP Configuration on Router 2  

R2>enable R2#show ip route connected   C   200.100.50.64/28  is directly connected, FastEthernet0/0   C   200.100.50.80/30  is directly connected, Serial0/1/0   R2#configure terminal R2(config)#router eigrp 50 R2(config-router)#no auto-summary R2(config-router)#network 210.100.50.64    255.255.255.240 R2(config-router)#network 210.100.50.80    255.255.255.252 R2(config-router)#exit R2(config)#exit R2#write

Verification on Router 1  

R1#show ip route      210.100.50.0/24 is variably subnetted, 3 subnets, 3 masks C       210.100.50.0/26 is directly connected, FastEthernet0/0 D       210.100.50.64/28 [90/2172416] via 200.100.50.82, 00:00:14, Serial0/0/0 C       210.100.50.80/30 is directly connected, Serial0/0/0

Verification on Router 2  

R2#show ip route      210.100.50.0/24 is variably subnetted, 3 subnets, 3 masks D       210.100.50.0/26 [90/2172416] via 200.100.50.81, 00:00:08, Serial0/1/0 C       210.100.50.64/28 is directly connected, FastEthernet0/0 C       210.100.50.80/30 is directly connected, Serial0/1/0