PROGRESS 2 : SUBNETTING CALCULATION

 What is Subnet?

           A subnet or subnetwork is a network inside a network. This subnet can make networks be more efficient and also can make network traffic can travel a shorter distance without passing through unnecessary routers to reach its destination. 

Subnetting calculation divided by two:

QUESTION

In terms of private addressing scheme, UTeM network is using Class C private addressing scheme

which is 192.168.4.0/24. Given 5 faculties and 1 IT Center that have each specified network addresses. IT Center assigned as another subnet with its own network address. Each subnet has 32 host address stand for 1 broadcast address and 30 usable address.

Solution:

• IP address : 192.168.4.0/24
• Class of IP address : Class C
• Default subnet mask : 255.255.255.0
• Finding the no. of subnets :

                          requirement : 6 ⇒ find nearest number which is not too large/ less from the requirement

• Quantity of bit borrowed : 3 ⇘

                                                - Borrowed from the host portion of IP address to the network  portion of the IP address

                                                 - Takes 3 bits from host field for subnetting and leaves 6 bits for defining hosts.

                                                       

• Quantity of subnet : 

• Quantity of host per subnet : 

• Mask :

             IP Address : 192.168.4.0/27

             subnet mask : 255.255.255.224/27

NO	NETWORK ID	USABLE HOST ID RANGE	NO USABLE  HOST ID	BROADCAST ID
1.	192.168.4.0	192.168.4.1 - 192.168.4.30	30	192.168.4.31
2.	192.168.4.32	192.168.4.33 - 192.168.4.62	30	192.168.4.63
3.	192.168.4.64	192.168.4.65 - 192.168.4.94	30	192.168.4.95
4.	192.168.4.96	192.168.4.97 - 192.168.4.126	30	192.168.4.127
5.	192.168.4.128	192.168.4.129 - 192.168.4.158	30	192.168.4.159
6.	192.168.4.160	192.168.4. 161 - 192.168.4.190	30	192.168.4.191
7.	192.168.4.192	192.168.4.193 - 192.168.4.222	30	192.168.4.223
8.	192.168.4.224	192.168.4.225 - 192.168.4.254	30	192.168.4.255

         Since requirement is 6, the IT Center in UTeM is assigned to 6th subnet which ranges from 192.168.4.160 to 192.168.4.191 

➤ for IP address of UTeM : 

            ⇛ network ID : 192.168.4.160 from 1st address.

            ⇛ broadcast ID : 192.168.4.191 from the last address.

        Throughout the range there are 30 more usable host IDs within this range.

➤ for IP address of Online Learning System Server(ULearn) : 

            ⇛ Assigned to 4th  address among  the 30 host IDs.

            ⇛ IP address : 192.168.4.164/27