The Designated Interface

1. Assign the IP address to the designated interface as indicated in the diagram.

Router1

R1# conf t

R1(config) # int loopback0

R1(config-if)# ip address 140.4.1.1 255.255.255.255

          #no shut

          #exit

R1(config) # int sa0/0

R1(config-if)# ip address 140.4.12.5 255.255.255.252

          #no shut

          #exit

R1(config) # int fa0/0

R1(config-if)# ip address 201.100.50.17 255.255.255.240

          #no shut

          #exit

Router2

R2# conf t

R2(config) # int loopback0

R2(config-if)# ip address 140.4.2.2 255.255.255.255

          #no shut

          #exit

R2(config) # int s0/0

R2(config-if)# ip address 140.4.12.6 255.255.255.252

          #no shut

          #exit

R2(config) # int fa0/0

R2(config-if)# ip address 202.100.50.34 255.255.255.240

          #no shut

          #exit

R2(config) # int sa0/1

R2(config-if)# ip address 140.4.23.9 255.255.255.252

          #no shut

          #exit

Router3

R3# conf t

R3(config) # int loopback0

R3(config-if)# ip address 140.4.3.3 255.255.255.255

          #no shut

          #exit

R3(config) # int sa0/0

R3(config-if)# ip address 140.4.23.10 255.255.255.252

          #no shut

          #exit

R3(config) # int sa0/1

R3(config-if)# ip address 140.4.34.13 255.255.255.252

          #no shut

          #exit

R3(config) # int fa0/0

R3(config-if)# ip address 203.100.50.65 255.255.255.240

          #no shut

          #exit

Router4

R4# conf t

R4(config) # int loopback0

R4(config-if)# ip address 140.4.4.4 255.255.255.255

          #no shut

          #exit

R4(config) # int sa0/0

R4(config-if)# ip address 140.4.34.14 255.255.255.252

          #no shut

          #exit

Router Trunk Configuration (Router4)

R4(config)#int f0/0

R4(config-if)#int f0/0.10

R4(config-subif)#encapsulation dot1q 10

R4(config-subif)#ip add 10.5.3.1 255.255.255.0

R4(config)#int f0/0

R4(config-if)#int f0/0.20

R4(config-subif)#encapsulation dot1q 20

R4(config-subif)#ip add 20.5.3.1 255.255.255.0

R4(config)#int f0/0

R4(config-if)#int f0/0.30

R4(config-subif)#encapsulation dot1q 30

R4(config-subif)#ip add 30.5.3.1 255.255.255.0

R4(config)#int f0/0

R4(config-if)#no shut

  1. Configure all the switches.

Sw4# vlan database

Sw4(vlan)#

SW4(vlan)#vtp domain IBM

SW4(vlan)#vtp password cisco

SW4(vlan)#vtp server

          #exit

SW4#

SW4(config)#int f0/1

SW4(config-if)#switchport mode access

SW4(config-if)#switchport access vlan 10

SW4(config)#int f0/2

SW4(config-if)#switchport mode access

SW4(config-if)#switchport access vlan 10

SW4# conf t

SW4(config)# int range ga0/1-2

SW4(config)#switchport mode trunk

SW4(config)# exit

SW4# conf t

SW4(config)# int range ga0/2

SW4(config)#ip address 30.5.3.2 255.255.255.0

SW4(config)# no shut

SW4(config)# exit

SW4(config)# ip default-gateway 30.5.3.1

SW5#

SW5(config)#int f0/1

SW5(config-if)#switchport mode access

SW5(config-if)#switchport access vlan 20

SW5(config)#int f0/2

SW5(config-if)#switchport mode access

SW5(config-if)#switchport access vlan 20

SW5# conf t

SW5(config)# int range ga0/1-2

SW5(config)#switchport mode trunk

SW5(config)# exit

SW5# conf t

SW5(config)# int range ga0/2

SW5(config)#ip address 30.5.3.3 255.255.255.0

SW5(config)# no shut

SW5(config)# exit

SW5(config)# ip default-gateway 30.5.3.1

  1. Configure OSPF as indicated in the diagram

Router 1)

R1# configure terminal

R1(config)#router ospf 1

R1(config-router)#router-id 140.4.1.1

R1(config-router)#network 140.4.1.1 0.0.0.0 area 1

R1(config-router)#network 140.4.12.4 0.0.0.3 area 12

Rr1(config-router)#network 201.100.50.16 0.0.0.15 area 12

R1(config-router)#exit

Router 2)

Router# configure terminal

R2(config)#router ospf 1

R2(config-router)#router-id 140.4.2.2

R2(config-router)#network 140.4.2.2 0.0.0.0 area 2

R2(config-router)#network 140.4.12.4 0.0.0.3 area 12

R2(config-router)#network 140.4.23.8 0.0.0.3 area 0

R2(config-router)#network 202.100.50.32 0.0.0.15 area 0

R2(config-router)#exit

Router3)

R3# configure terminal

R3(config)#router ospf 1

R3(config-router)#router-id 140.4.3.3

R3(config-router)#network 140.4.3.3 0.0.0.0 area 3

R3(config-router)#network 140.4.34.12 0.0.0.3 area 34

R3(config-router)#network 140.4.23.8 0.0.0.3 area 0

R3(config-router)#network 203.100.50.64 0.0.0.15 area 0

R3(config-router)#exit

Router 4)

R4# configure terminal

R4(config)#router ospf 1

R4(config-router)#router-id 140.4.4.4

R4(config-router)#network 140.4.4.4 0.0.0.0 area 4

R4(config-router)#network 140.4.34.12 0.0.0.3 area 34

R4(config-router)#exit

Virtual link for ospf

R2# conf t

R2(config)# router ospf1

R2(config)# router-id 140.4.2.2

R2(config)#area0 virtual-link 140.4.3.3

R3# conf t

R3(config)# router ospf1

R3(config)# router-id 140.4.3.3

R3(config)#area0 virtual-link 140.4.2.2

  1. Configure EIGRP as indicated in the diagram. Redistribute between OSPF and EIGRP.

R4(config) # router eigrp 100

               # no auto-summary

               # eigrp router-id 140.4.4.4

               # passive interface default

               # no passive interface f0/0

              # network 140.4.4.4 0.0.0.0

               # network 30.5.3.0 0.0.0.255

             # network 20.5.3.0 0.0.0.255

             # network 10.5.3.0 0.0.0.255

Redistribution

R4(config) # router eigrp 100

              # redistribute ospf 1 METRIC 1500 100 255 1 1500

R4(config)# router ospf 1

              #redistribute eigrp 10 metric 1500 100 255 1500

  1. Once questions 1-4 have been correctly completed, all IP addresses must be able to ping each other

we can test the pinging.and yes they are pinging each other.

TESTING, for instance-

GO TO PC1 (201.100.50.18)

PC1>ping 10.5.3.2

Some of the testing commands are-

show ip route

show protocols

show ip protocol

show ip eigrp interfaces 

  1. NET_A should not be able to telnet switches 4 & 5.

Access-list 100 deny tcp 201.100.50.16 0.0.0.15 30.5.3.2 eq 23

Access-list 100 deny tcp 201.100.50.16 0.0.0.15 30.5.3.3 eq 23

Access-list 100 permit any any

Int f0/0

Ip access-group 100 out

  1. NET_B should not be able http the web server.

No access-list 100

Access-list 100 deny tcp 201.100.50.16 0.0.0.15 30.5.3.2 eq 23

Access-list 100 deny tcp 201.100.50.16 0.0.0.15 30.5.3.3 eq 23

Access-list 100 deny tcp 202.100.50.32 0.0.0.15 20.5.3.2 eq www

Access-list 100 deny tcp 202.100.50.32 2 0.0.0.15 20.5.3.2 eq80

Access-list 100 permit any any

  1. NET_C should not be able to FTP the FTP server.

No access-list 100

Access-list 100 deny tcp 201.100.50.16 0.0.0.15 30.5.3.2 eq 23

Access-list 100 deny tcp 201.100.50.16 0.0.0.15 30.5.3.3 eq 23

Access-list 100 deny tcp 202.100.50.32 0.0.0.15 20.5.3.2 eq www

Access-list 100 deny tcp 203.100.50.64 0.0.0.15 10.5.3.2 eq 21

Access-list 100 permit any any

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