Labs
Lab13/.DS_Store
__MACOSX/Lab13/._.DS_Store
Lab13/Lab 13 Subnetting Worksheet(3).docx
Liberty University
CSIS 331
Lab 13 Subnetting Worksheet
Topology
Requirements
IPv4 Addressing
· Create subnets that meet the host requirements using 192.168.100.0/24.
NOTE: You may use the table on the last page as a reference to assist you.
Step 1: Subnet the 192.168.100.0/24 network into the appropriate number of subnets.
a. Based on the topology and host requirements, how many subnets are needed? _____
NOTE: Donʻt forget the routers need one subnet to talk to each other. So far your Subnet Bitmap looks like this: nnnnnnnn.nnnnnnnn.nnnnnnnn.hhhhhhhh (n=network bits covered by subnets mask h = host bits)
b. How many bits, if any, must be borrowed to support the number of subnets needed in the topology table?
n =____ (Formula is 2n = subnets). n being the number of subnet bits.
NOTE: Remember you have a 24 bit subnet mask (Class C). The binary form looks like this 11111111.11111111.11111111.00000000. How many bits do you need get the amount of subnets you need?Try to use the formula 2n to calculate close to what you need. For example you donʻt need 62 subnets.
c. How many subnets does this create? ____ = 2 n
d. How many usable hosts does this create per subnet? _____
NOTE: Always subtract 2 host IPʻs for Network and Broadcast IP addresses. You already have 2 8 - 2 = 254 hosts before subnetting but you do not need that many hosts per subnet. (n=network/mask bits covered by subnets mask, s=subnet bits h = host bits) Your binary bitmap should now look something like this. nnnnnnnn.nnnnnnnn.nnnnnnnn.sssshhhh (n=network/mask bits covered by subnets mask, s=subnet bits h = host bits). However many bits you borrowed you add to the CIDR of /24. For example if you borrowed 4 extra bits then your CIDR would be /28.
e. Calculate the binary value for the first five subnets.. The first subnet is already shown. List them in the table below.
Remember these binary values: 128 64 32 16 8 4 2 1. Subtract from left to right to get your binary answer. If there is a remainder that matches closely to binary column enough to subtract mark a 1 in that column otherwise mark a 0. You should have eight 0 and 1s
1st Octet:
Can you subtract 128 from 192? Yes. Place a 1 in the 1st binary column. Remainder is 64.
Can you subtract 64 from 64? Yes. Place a 1 in the 2nd binary column. Remainder is 0.
Mark six zeroes for the rest of the binary columns as you cannot subtract further.
2nd Octet:
Can you subtract 128 from 168? Yes. Place a 1 in the 1st binary column. Remainder is 40.
Can you subtract 64 from 40? No.Place a 0 in the 2nd binary column.
Can you subtract 32 from 40? Yes. Place a 1 in the 3nd binary column. Remainder is 8.
Can you subtract 16 from 8? No. Place a 0 in the 4th binary column.
Can you subtract 8 from 8? Yes. Place a 1 in the 5th binary column. Remainder is 0 .
Mark three zeroes for the rest of the binary columns as you cannot subtract further.
3rdOctet:
Can you subtract 128 from 100? No. Place a 0 in 1st binary column.
Can you subtract 64 from 100? Yes.Place a 1 in the 2nd binary column. Remainder is 36.
Can you subtract 32 from 36? Yes. Place a 1 in the 3nd binary column. Remainder is 4.
Can you subtract 16 from 4? No. Place a 0 in the 4th binary column.
Can you subtract 8 from 4? No. Place a 0 in the 5th binary column.
Can you subtract 4 from 4? Yes. Place a 1 in the 6th binary column. Remainder is 0 .
Mark two zeroes for the rest of the binary columns as you cannot subtract further.
f. Calculate the binary and decimal values of the new subnet mask. Mark them in the Mask 4th octet columns in the table below. Begin with Network 0. Note: You may not need to use all rows.
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IP |
Mask |
||||||
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1st Octet |
2nd Octet |
3rd Octet |
4th Octet |
1st Octet |
2nd Octet |
3rd Octet |
4th Octet |
|
Network 0 “Zero Subnet” |
192
11000000 |
168
10101000 |
100
01100100 |
0
00000000 |
255
11111111 |
255
11111111 |
255
11111111 |
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Network 1 |
192
11000000 |
168
10101000 |
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255
11111111 |
255
11111111 |
255
11111111 |
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Network 2 |
192
11000000 |
168
10101000 |
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255
11111111 |
255
11111111 |
255
11111111 |
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Network 3 |
192
11000000 |
168
10101000 |
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255
11111111 |
255
11111111 |
255
11111111 |
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Network 4 |
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Network 5 |
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Network 6 |
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Network 7 |
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Network 8 |
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Network 9 |
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Network 10 |
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g. Fill in the Subnet Table, listing the decimal value of all available subnets, the first and last usable host address, and the broadcast address. Repeat until all addresses are listed.
Note: You may not need to use all rows.
Subnet Table
Example shows 192.168.1.0/27 subnet mask (blocks of 32).
Step 2:Assign the subnets to the network shown in the topology.
a. Assign Subnet 0 to the LAN connected to the GigabitEthernet 0/0 interface of R1. Mark here the subnet range:
b. Assign Subnet 1 to the LAN connected to the GigabitEthernet 0/1 interface of R1. Mark here the subnet range:
c. Assign Subnet 2 to the LAN connected to the GigabitEthernet 0/0 interface of R2. Mark here the subnet range:
d. Assign Subnet 3 to the LAN connected to the GigabitEthernet 0/1 interface of R2. Mark here the subnet range: :
e. Assign Subnet 4 to the WAN link between R1 to R2. Mark here the subnet range:
Step 3: Addressing Table
a. Assign the first usable IP addresses to R1 for the two LAN links and the WAN link.
b. Assign the first usable IP addresses to R2 for the LANs links. Assign the last usable IP address for the WAN link.
c. Assign the second usable IP addresses to the switches.
d. Assign the last usable IP addresses to the hosts.
NOTE: Do not use the Subnet address or Broadcast address of each subnet as they are not usable addresses to assign to a host.
Addressing Table
|
Device |
Interface |
IP Address |
Subnet Mask |
Default Gateway |
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R1 |
G0/0 |
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G0/1 |
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S0/0/0 |
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R2 |
G0/0 |
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G0/1 |
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S0/0/0 |
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S1 |
VLAN 1 |
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S2 |
VLAN 1 |
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S3 |
VLAN 1 |
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S4 |
VLAN 1 |
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PC1 |
NIC |
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PC2 |
NIC |
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PC3 |
NIC |
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PC4 |
NIC |
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Ping Table:
|
Ping From Device |
Ping to Device IP |
Possible Y/N |
If no, Why Not? What did you do to resolve? |
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R1 |
S3 |
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R1 |
PC4 |
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S3 |
PC4 |
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S3 Show Run Output
|
CIDRs for mask 0.0.0.0 |
/1 |
/2 |
/3 |
/4 |
/5 |
/6 |
/7 |
/8 |
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CIDRs for mask 255.0.0.0 |
/9 |
/10 |
/11 |
/12 |
/13 |
/14 |
/15 |
/16 |
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CIDRs for mask 255.255.0.0 |
/17 |
/18 |
/19 |
/20 |
/21 |
/22 |
/23 |
/24 |
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CIDRs for 255.255.255.0 |
/25 |
/26 |
/27 |
/28 |
/29 |
/30 |
/31 |
/31 |
|
Subnet Mask |
128 |
192 |
224 |
240 |
248 |
252 |
254 |
255 |
|
Magic Number |
128 |
64 |
32 |
16 |
8 |
4 |
2 |
1 |
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# of Subnets or Hosts Needed |
255 |
127 |
63 |
31 |
15 |
7 |
3 |
1 |
|
Bits Borrowed |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
Source: https://www.interfacett.com/blogs/subnetting-tcpip-network-using-magic-box-method/
__MACOSX/Lab13/._Lab 13 Subnetting Worksheet(3).docx
Lab13/Lab 13.pkt(1).pka
__MACOSX/Lab13/._Lab 13.pkt(1).pka
Lab13/Lab13 Instructions(1).docx
Liberty University
CSIS 331
Packet Tracer:
[Adapted from Cisco Networking Academy Routing and Switching v6 8.1.4.7]
Topology
Objectives
Part 1: Design an IP Addressing Scheme
Part 2: Assign IP Addresses to Network Devices and Verify Connectivity
Scenario
In this activity, you are given the network address of 192.168.100.0/24 to subnet and provide the IP addressing for the network shown in the topology. Each LAN in the network requires enough space for, at least, 25 addresses for end devices, the switch and the router. The connection between R1 to R2 will require an IP address for each end of the link.
NOTE: Lab 13 Subnetting Worksheet is your Answer Sheet for this lab.
Part 1: Design an IP Addressing Scheme
Step 1: Subnet the 192.168.100.0/24 network into the appropriate number of subnets.
Complete Step 1 in your Lab 13 Subnettting Worksheet.
Step 2: Assign the subnets to the network shown in the topology.
a. Assign Subnet 0 to the LAN connected to the GigabitEthernet 0/0 interface of R1. Mark your answer in your Lab 13 Subnettting Worksheet Step 2.
b. Assign Subnet 1 to the LAN connected to the GigabitEthernet 0/1 interface of R1. Mark your answer in your Lab 13 Subnettting Worksheet Step 2.
c. Assign Subnet 2 to the LAN connected to the GigabitEthernet 0/0 interface of R2. Mark your answer in your Lab 13 Subnettting Worksheet Step 2.
d. Assign Subnet 3 to the LAN connected to the GigabitEthernet 0/1 interface of R2. Mark your answer in your Lab 13 Subnettting Worksheet Step 2.
e. Assign Subnet 4 to the WAN link between R1 to R2. Mark your answer in your Lab 13 Subnettting Worksheet Step 2.
Step 3: Document the addressing scheme.
Fill in the Addressing Table in your Lab 13 Subnetting Workshee Step 3 using the following guidelines:
a. Assign the first usable IP addresses to R1 for the two LAN links and the WAN link.
b. Assign the first usable IP addresses to R2 for the LANs links. Assign the last usable IP address for the WAN link.
c. Assign the second usable IP addresses to the switches.
d. Assign the last usable IP addresses to the hosts.
Part 2: Assign IP Addresses to Network Devices and Verify Connectivity
Most of the IP addressing is already configured on this network. Implement the following steps to complete the addressing configuration. Using your Assignment Table
Step 1: Configure IP addressing in Lab 13.pkt on R1 LAN interfaces.
Step 2: Configure IP addressing on S3 Lab 13.pkt, including the default gateway.
Step 3: Configure IP addressing on PC4 Lab 13.pkt, including the default gateway.
Step 4: Verify connectivity.
You can only verify connectivity from R1, S3, and PC4. However, you should be able to ping every IP address listed in the Addressing Table.
Complete the Ping Table in your Lab 13 Subnetting Worksheet
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