9.1.4.6 Packet Tracer - Subnetting Scenario 1

9.1.4.6 Packet Tracer - Subnetting Scenario 1

Topologi

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.

Part 1:     Design an IP Addressing Scheme
Step 1:     Subnet the 192.168.100.0/24 network into the appropriate number of subnets.

a.    Based on the topology, how many subnets are needed?
b.    How many bits must be borrowed to support the number of subnets in the topology table?
c.    How many subnets does this create?
d.    How many usable hosts does this create per subnet?
Note: If your answer is less than the 25 hosts required, then you borrowed too many bits.
e.     Calculate the binary value for the first five subnets. The first subnet is already shown.

Sebenarnya agak bingung juga mau jelasin dari mana, namun yang saya pahami ketika mengerjakan latihan ini adalah bagaimana alokasi IP Address dimana disediakan 1 (satu) IP Address yang kemudian dibagi-bagi/di subnet sehingga mencakup seluruh kebutuhan IP Address berdasarkan topologi yang telah ditentukan. 

Subnetting

Hal pertama yang terpikirkan olehku adalah subnet. Ya, karena pembagian/alokasi IP Address jika disediakan 1 (satu) IP Address maka berkaitan dengan subnet/subnetting. Maka yang dilakukan adalah mengotak-atik subnet mask dari IP Address yang telah disediakan tadi.

- Dibutuhkan IP Address untuk 25 hosts

- Tentukan subnet yang memenuhi persyaratan di atas

<!-- Cara yang aku lakukan -->

11111111.11111111.11111111.11100000

Untuk mengetahui jumlah host per subnet gunakan rumus :

2^n-2

dimana : n adalah jumlah angka 0 di oktet terakhir

maka

2^5-2 = 30 (memenuhi syarat butuh 25 hosts)

Berdasarkan kebutuhan tersebut, subnet yang memenuhi adalah /27

Terus ???

Yang saya lakukan adalah menentukan range IP Address yang digunakan dalam 1 subnet.

Biar lebih mudah, aku pake LibreOffice Calc (kayak Excel) untuk menentukan range IP Address.

Alokasi IP Address

Selanjutnya, PAHAMI bagian ini

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:
b.    Assign Subnet 1 to the LAN connected to the GigabitEthernet 0/1 interface of R1:
c.    Assign Subnet 2 to the LAN connected to the GigabitEthernet 0/0 interface of R2:
d.    Assign Subnet 3 to the LAN connected to the GigabitEthernet 0/1 interface of R2:
e.    Assign Subnet 4 to the WAN link between R1 to R2:

Step 3:     Document the addressing scheme.

Fill in the Addressing Table 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.

Step 1:     Configure IP addressing on R1 LAN interfaces.

R1>enable
R1#configure terminal 
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#interface gigabitEthernet 0/0
R1(config-if)#ip address 192.168.100.1 255.255.255.224
R1(config-if)#no shutdown
R1(config-if)#
R1(config-if)#int g0/1
R1(config-if)#ip address 192.168.100.33 255.255.255.224
R1(config-if)#no shutdown
R1(config-if)#

Step 2:     Configure IP addressing on S3, including the default gateway.

S3>enable
S3#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
S3(config)#interface vlan 1
S3(config-if)#ip add 192.168.100.66 255.255.255.224
S3(config-if)#no shutdown
S3(config-if)#exit
S3(config)#ip default-gateway 192.168.100.65

S3(config)#

Step 3:     Configure IP addressing on PC4, including the default gateway.

PC4 IP Address

Step 4:     Verify connectivity.

Tes Koneksi PC4 ke PC1

Terima kasih sudah membaca. Salam, Soni Setiawan