Static Configuration on 4 Routers – Advance LAB

SEMrush

In this lab, I am gonna teach you Static Configuration on 4 Routers

VLSM

Given Network: 197.100.100.0

Required hosts on Router 1= 30

Required hosts on Router 2= 25

Required hosts on Router 3= 6

Required hosts on Router 4= 1

Static Configuration on 4 Routers

R1<= 30

30<= 2n – 2

30<= 25 – 2

30<= 32 – 2

30<= 32

Total number of network bits = 32

32 – n = 32 – 5 = 27 (CIDR value of given network i.e. Router 1)

i.e. 197.100.100.0/27

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 2.

So the new network is 197.100.100.32/?

Now find FVH, LVH and Broadcast address

Given Network1971001000
First Valid Host-FVH1971001001
Last Valid Host-LVH19710010030
Broadcast19710010031
New Network19710010032

R2<= 25

25<= 2n – 2

25<= 25 – 2

25<= 32 – 2

25<= 30

Total number of network bits = 32

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

i.e. 197.100.100.32/27

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 197.100.100.64/?

Now find FVH, LVH and Broadcast address

Given Network19710010032
First Valid Host-FVH19710010033
Last Valid Host-LVH19710010062
Broadcast19710010063
New Network19710010064

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. 197.100.100.64/29

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 197.100.100.72/?

Now find FVH, LVH and Broadcast address

Given Network19710010064
First Valid Host-FVH19710010065
Last Valid Host-LVH19710010070
Broadcast19710010071
New Network19710010072

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. 197.100.100.72/30

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 197.100.100.76/?

Now find FVH, LVH and Broadcast address

Given Network19710010072
First Valid Host-FVH19710010073
Last Valid Host-LVH19710010074
Broadcast19710010075
New Network19710010076
SEMrush

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. 197.100.100.76/30

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 197.100.100.80/?

Now find FVH, LVH and Broadcast address

Given Network19710010076
First Valid Host-FVH19710010077
Last Valid Host-LVH19710010078
Broadcast19710010079
New Network19710010080
SEMrush

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. 197.100.100.80/30

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 and 4 (Virtual Network).

so the new network is 197.100.100.84/?

Now find FVH, LVH and Broadcast address

Given Network19710010080
First Valid Host-FVH19710010081
Last Valid Host-LVH19710010082
Broadcast19710010083
New Network19710010084
SEMrush

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 (R3&R4)

i.e. 197.100.100.84/30

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 197.100.100.88/?

Now find FVH, LVH and Broadcast address

Given Network19710010084
First Valid Host-FVH19710010085
Last Valid Host-LVH19710010086
Broadcast19710010087
New Network19710010088

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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 197.100.100.1 255.255.255.224
R1(config-if)#no shutdown
R1(config-if)#exit  

R1(config)#interface serial 0/0/0
R1(config-if)#ip address 197.100.100.77 255.255.255.252
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 197.100.100.33 255.255.255.224
R2(config-if)#no shutdown
R2(config-if)#exit  

R2(config)#interface serial 0/1/0
R2(config-if)#ip address 197.100.100.78 255.255.255.252
R2(config-if)#no shutdown
R2(config-if)#exit  

R2(config)#interface serial 0/0/0
R2(config-if)#ip address 197.100.100.81 255.255.255.252
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 197.100.100.65 255.255.255.248
R3(config-if)#no shutdown
R3(config-if)#exit  

R3(config)#interface serial 0/1/0
R3(config-if)#ip  address 197.100.100.82 255.255.255.252
R3(config-if)#no shutdown
R3(config-if)#exit  

R3(config)#interface serial 0/0/0
R3(config-if)#ip address 197.100.100.85 255.255.255.252
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
R3(config)#hostname R4
R4(config)#interface fastEthernet 0/0
R4(config-if)#ip address 197.100.100.73 255.255.255.252
R4(config-if)#no shutdown
R4(config-if)#exit  

R4(config)#interface serial 0/1/0
R4(config-if)#ip address 197.100.100.86 255.255.255.252
R4(config-if)#no shutdown
R4(config-if)#exit
R4(config)#exit
R4#write
Static Configuration on 4 Routers

Static Configuration on Router 1

R1>enable
R1#configure terminal
R1(config)#ip route 197.100.100.32                         255.255.255.224         197.100.100.78
R1(config)#ip route 197.100.100.64                         255.255.255.248         197.100.100.78
R1(config)#ip route 197.100.100.72                         255.255.255.252         197.100.100.78
R1(config)#
R1(config)#ip route 197.100.100.76                         255.255.255.252         197.100.100.78
R1(config)#ip route 197.100.100.80                         255.255.255.252         197.100.100.78
R1(config)#ip route 197.100.100.84                         255.255.255.252         197.100.100.78
R1(config)#exit
R1#write

Static Configuration on Router 2

R2>enable
R2#configure terminal
R2(config)#ip route 197.100.100.0               255.255.255.224         197.100.100.77
R2(config)#ip route 197.100.100.64                         255.255.255.248         197.100.100.82
R2(config)#ip route 197.100.100.72                         255.255.255.252         197.100.100.82
R2(config)#
R2(config)#ip route 197.100.100.76                         255.255.255.252         197.100.100.77
R2(config)#ip route 197.100.100.80                         255.255.255.252         197.100.100.82
R2(config)#ip route 197.100.100.84                         255.255.255.252         197.100.100.82
R2(config)#exit
R2#write

Static Configuration on Router 3

R3>enable
R3#configure terminal
R3(config)#ip route 197.100.100.0               255.255.255.224         197.100.100.81
R3(config)#ip route 197.100.100.32                         255.255.255.224         197.100.100.81
R3(config)#ip route 197.100.100.72                         255.255.255.252         197.100.100.86
R3(config)#
R3(config)#ip route 197.100.100.76                         255.255.255.252         197.100.100.81
R3(config)#ip route 197.100.100.80                         255.255.255.252         197.100.100.81
R3(config)#ip route 197.100.100.84                         255.255.255.252         197.100.100.86
R3(config)#exit
R3#write

Static Configuration on Router 4

R4>enable
R4#configure terminal
R4(config)#ip route 197.100.100.0               255.255.255.224         197.100.100.85
R4(config)#ip route 197.100.100.32                         255.255.255.224         197.100.100.85
R4(config)#ip route 197.100.100.64                         255.255.255.248         197.100.100.85
R4(config)#
R4(config)#ip route 197.100.100.72                         255.255.255.252         197.100.100.85
R4(config)#ip route 197.100.100.76                         255.255.255.252         197.100.100.85
R4(config)#ip route 197.100.100.80                         255.255.255.252         197.100.100.85
R4(config)#exit
R4#write

Verification on Router 1

R1#show ip route     
197.100.100.0/24 is variably subnetted, 7 subnets, 3 masks
C       197.100.100.0/27 is directly connected, FastEthernet0/0
S       197.100.100.32/27 [1/0] via 197.100.100.78
S       197.100.100.64/29 [1/0] via 197.100.100.78
S       197.100.100.72/30 [1/0] via 197.100.100.78
C       197.100.100.76/30 is directly connected, Serial0/0/0
S       197.100.100.80/30 [1/0] via 197.100.100.78
S       197.100.100.84/30 [1/0] via 197.100.100.78

Verification on Router 2

R2#show ip route     
197.100.100.0/24 is variably subnetted, 7 subnets, 3 masks
S       197.100.100.0/27 [1/0] via 197.100.100.77
C       197.100.100.32/27 is directly connected, FastEthernet0/0
S       197.100.100.64/29 [1/0] via 197.100.100.82
S       197.100.100.72/30 [1/0] via 197.100.100.82
C       197.100.100.76/30 is directly connected, Serial0/1/0
C       197.100.100.80/30 is directly connected, Serial0/0/0
S       197.100.100.84/30 [1/0] via 197.100.100.82

Verification on Router 3

R3#show ip route     
197.100.100.0/24 is variably subnetted, 7 subnets, 3 masks
S       197.100.100.0/27 [1/0] via 197.100.100.81
S       197.100.100.32/27 [1/0] via 197.100.100.81
C       197.100.100.64/29 is directly connected, FastEthernet0/0
S       197.100.100.72/30 [1/0] via 197.100.100.86
S       197.100.100.76/30 [1/0] via 197.100.100.81
C       197.100.100.80/30 is directly connected, Serial0/1/0
C       197.100.100.84/30 is directly connected, Serial0/0/0

Verification on Router 4

R4#show ip route     
197.100.100.0/24 is variably subnetted, 7 subnets, 3 masks
S       197.100.100.0/27 [1/0] via 197.100.100.85
S       197.100.100.32/27 [1/0] via 197.100.100.85
S       197.100.100.64/29 [1/0] via 197.100.100.85
C       197.100.100.72/30 is directly connected, FastEthernet0/0
S       197.100.100.76/30 [1/0] via 197.100.100.85
S       197.100.100.80/30 [1/0] via 197.100.100.85
C       197.100.100.84/30 is directly connected, Serial0/1/0
Static Configuration on 4 Routers

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