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IP Addressing #5
Subnet the following class “B” address and
apply it to the attached network topology.
168.12.0.0
There are 8 networks in the attached topology, but you need to allow for future growth in the
network. It projected in the future that you will need 56 networks.
How many bits will you need to borrow? ___________________________________________
What is the subnet mask? ________________________________________________________
How many usable subnets will be created? __________________________________________
How many usable host will created on each subnet? ___________________________________
LAB-A
Ethernet 0 is on subnet 1
What is the network number of the subnet 1? ________________________________________
What is the usable range of host on the subnet 1? _____________________________________
What is the broadcast number of the subnet 1? _______________________________________
Ethernet 1 is on subnet 10
What is the network number of the subnet 10? _______________________________________
What is the usable range of host on the subnet 10? ____________________________________
What is the broadcast number of the subnet 10? ______________________________________
Serial 0 is on subnet 18
What is the network number of the subnet 18? _______________________________________
What is the usable range of host on the subnet 18? ____________________________________
What is the broadcast number of the subnet 18? ______________________________________
LAB-B
Ethernet 0 is on subnet 20
What is the network number of the subnet 20? _______________________________________
What is the usable range of host on the subnet 20? ____________________________________
What is the broadcast number of the subnet 20? ______________________________________
Serial 0 is on subnet 24
What is the network number of the subnet 24? _______________________________________
What is the usable range of host on the subnet 24? ____________________________________
What is the broadcast number of the subnet 24? ______________________________________
Serial 1 is on subnet 18 (attached to S0 on LAB-A)
LAB-C
Ethernet 0 is on subnet 30
What is the network number of the subnet 30? _______________________________________
What is the usable range of host on the subnet 30? ____________________________________
What is the broadcast number of the subnet 30? ______________________________________
Serial 0 is on subnet 34
What is the network number of the subnet 34? _______________________________________
What is the usable range of host on the subnet 34? ____________________________________
What is the broadcast number of the subnet 34? ______________________________________
Serial 1 is on subnet 24 (attached to S0 on LAB-B)
Sem. 2
IP Addressing #5
Created by G. Wright – ESC 11 Ft. Worth, TX
LAB-D
Ethernet 0 is on subnet 40
What is the network number of the subnet 40? _______________________________________
What is the usable range of host on the subnet 40? ____________________________________
What is the broadcast number of the subnet 40? ______________________________________
Serial 1 is on subnet 34 (attached to S0 on LAB-C)
LAB-E
Ethernet 0 shares subnet 40 with LAB-D
Apply the address scheme that you calculated. Assign each interface on the router an IP address,
beginning with the first usable host address.
Semester 2 - Lab Configuration
LAB-B
LAB-C
S1
S0 (DCE)
S1
E0
LAB-A
S0 (DCE)
E1
S0 (DCE)
E0
S1
LAB-D
E0
E0
E0
LAB-E
Router Name - LAB-A
Router Type - 2514
S0 =
E0 =
E1 =
SM =
Router Name - LAB-C
Router Type - 2503
S0 =
S1 =
E0 =
SM =
Router Name - LAB-E
Router Type - 2501
E0 =
SM =
Legend
Router
Hub
Switch
Router Name - LAB-B
Router Type - 2503
S0 =
S1 =
E0 =
SM =
Sem. 2
IP Addressing #5
Router Name - LAB-D
Router Type - 2501
S1 =
E0 =
SM =
Secret Password = class
Console Password = cisco
VTY Password = cisco
Console
Cable
Ethernet
Serial
Created by G. Wright – ESC 11 Ft. Worth, TX
IP Addressing #5 Answers
Subnet the following class “B” address and
apply it to the attached network topology.
168.12.0.0
There are 8 networks in the attached topology, but you need to allow for future growth in the
network. It projected in the future that you will need 56 networks.
How many bits will you need to borrow? ___________________________________________
6
What is the subnet mask? ________________________________________________________
255.255.252.0
How many usable subnets will be created? __________________________________________
62
How many usable host will created on each subnet? ___________________________________
1022
LAB-A
Ethernet 0 is on subnet 1
What is the network number of the subnet 1? ________________________________________
168.12.4.0
What is the usable range of host on the subnet 1? _____________________________________
168.12.4.1 – 168.12.7.254
What is the broadcast number of the subnet 1? _______________________________________
168.12.7.255
Ethernet 1 is on subnet 10
What is the network number of the subnet 10? _______________________________________
168.12.40.0
– 168.12.43.254
What is the usable range of host on the subnet 10? 168.12.40.1
____________________________________
What is the broadcast number of the subnet 10? ______________________________________
168.12.43.255
Serial 0 is on subnet 18
What is the network number of the subnet 18? _______________________________________
168.12.72.0
What is the usable range of host on the subnet 18? ____________________________________
168.12.72.1 – 168.12.75.254
What is the broadcast number of the subnet 18? ______________________________________
168.12.75.255
LAB-B
Ethernet 0 is on subnet 20
What is the network number of the subnet 20? _______________________________________
168.12.80.0
What is the usable range of host on the subnet 20? ____________________________________
168.80.4.1 – 168.12.83.254
What is the broadcast number of the subnet 20? ______________________________________
168.12.83.255
Serial 0 is on subnet 24
What is the network number of the subnet 24? _______________________________________
168.12.96.0
What is the usable range of host on the subnet 24? ____________________________________
168.12.96.1 – 168.12.99.254
What is the broadcast number of the subnet 24? ______________________________________
168.12.99.255
Serial 1 is on subnet 18 (attached to S0 on LAB-A)
LAB-C
Ethernet 0 is on subnet 30
What is the network number of the subnet 30? _______________________________________
168.12.120.0
What is the usable range of host on the subnet 30? ____________________________________
168.12.120.1 – 168.12.123.254
What is the broadcast number of the subnet 30? ______________________________________
168.12.123.255
Serial 0 is on subnet 34
What is the network number of the subnet 34? _______________________________________
168.12.136.0
What is the usable range of host on the subnet 34? ____________________________________
168.12.136.1 – 168.12.139.254
What is the broadcast number of the subnet 34? ______________________________________
168.12.139.255
Serial 1 is on subnet 24 (attached to S0 on LAB-B)
Sem. 2
IP Addressing #5
Created by G. Wright – ESC 11 Ft. Worth, TX
LAB-D
Ethernet 0 is on subnet 40
What is the network number of the subnet 40? _______________________________________
168.12.160.0
What is the usable range of host on the subnet 40? ____________________________________
168.12.160.1 – 168.12.163.254
What is the broadcast number of the subnet 40? ______________________________________
168.12.163.255
Serial 1 is on subnet 34 (attached to S0 on LAB-C)
LAB-E
Ethernet 0 shares subnet 40 with LAB-D
Apply the address scheme that you calculated. Assign each interface on the router an IP address,
beginning with the first usable host address.
Semester 2 - Lab Configuration
LAB-B
LAB-C
S1
S0 (DCE)
S1
E0
LAB-A
S0 (DCE)
E1
S0 (DCE)
E0
S1
LAB-D
E0
E0
E0
LAB-E
Router Name - LAB-A
Router Type - 2514
S0 = 168.12.72.1
E0 = 168.12.4.1
E1 = 168.12.40.1
SM = 255.255.252.0
Router Name - LAB-C
Router Type - 2503
S0 = 168.12.136.1
S1 = 168.12.96.2
E0 = 168.12.120.1
SM = 255.255.252.0
Router Name - LAB-E
Router Type - 2501
E0 = 168.12.160.2
SM = 255.255.252.0
Legend
Router
Hub
Switch
Router Name - LAB-B
Router Type - 2503
S0 = 168.12.96.1
S1 = 168.12.72.2
E0 = 168.12.80.1
SM = 255.255.252.0
Sem. 2
IP Addressing #5
Router Name - LAB-D
Router Type - 2501
S1 = 168.12.136.2
E0 = 168.12.160.1
SM = 255.255.252.0
Secret Password = class
Console Password = cisco
VTY Password = cisco
Console
Cable
Ethernet
Serial
Created by G. Wright – ESC 11 Ft. Worth, TX
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