Understanding Subnetting: What Is Subnet, Subnet Mask, and Masking in Computer Networks
In today’s networked global world, effective data communication is of prime importance. Whether you are studying for networking certifications or are going to become a network engineer, one of the basics you need to understand is subnetting. It facilitates dividing a network into manageable small units, enhancing security and performance.
In this UniNets blog, we will see what is subnet, subnet mask in networking, and masking in computer networks, and also emphasize how subnetting is important to control network hardware devices. We will also discuss career opportunities such as CCIE salary in India and overseas for future professionals.
What Is Subnetting?
Subnetting refers to the splitting of a big network into smaller sub-networks or “subnets.” Each subnet acts independently as a network with enhanced traffic management and more security.
As companies expand, they cannot handle all the devices in one enormous network. Subnetting simplifies this by putting related devices under smaller subnetworks.
What Is Subnet?
A subnet, or sub-network, is a divided section of an IP network. Subnets optimize traffic by concentrating communication. Printers in one department can be in one subnet, for instance, while the servers in another are grouped collectively.
What Is a Subnet Mask?
A subnet mask specifies a range of IP addresses that belong to a specific subnet. It breaks down the IP address into the host and network parts.
Typical Subnet Masks:
255.0.0.0 — Class A (8 network bits)
255.255.0.0 — Class B (16 network bits)
255.255.255.0 — Class C (24 network bits)
What Is Subnet Mask in Computer Networks?
In computer networks, a subnet mask is applied to decide which portion of an IP address identifies the network and which portion identifies the host. It assists routers and switches in routing data to the appropriate destination efficiently.
Example:
Suppose your IP address is 192.168.1.10 and the subnet mask is 255.255.255.0. Your device belongs to the 192.168.1.0 subnet. All devices with IPs beginning with 192.168.1.x are in the same subnet.
Cara Kerja Subnet Mask (How It Works)
In Bahasa Indonesia, “cara kerja subnet mask” translates to “how subnet masks work.” Here’s how:
The subnet mask applies binary arithmetic to separate the IP address into network and host parts.
Devices make use of this data in order to decide whether the destination IP is in the same subnet or has to be routed outside.
Masking in Computer Network
Masking in computer networks is a process of applying a subnet mask to an IP address in order to pull out the network details. It is critical in making sure packets are routed correctly in LANs as well as WANs.
Subnet Mask in Networking & Real-Life Use
In networking, subnet masks come into play when you are setting up devices such as routers, switches, and firewalls. Subnetting is used by network admins in order to:
Restrict broadcast domains
Enhance performance
Increase network security
Network Hardware Devices and Subnetting
Knowledge of subnetting assists you in better administration and configuration of different network hardware devices, including:
Routers – route traffic according to subnets
Switches – function within subnets
Firewalls – apply rules based on subnet boundaries
Network Hardware and Software in Modern IT
A full computer network hardware configuration consists of both hardware (such as routers, switches, firewalls) and software (such as network OS, monitoring tools). Combined, they facilitate smooth data communication.
CCIE Career Path: Salaries & Scope
Network professionals seeking to advance their careers find the CCIE (Cisco Certified Internetwork Expert) certification to be a premier one. Subnetting and network basics are an essential component of CCIE study materials.
CCIE Salary Insights:
CCIE Salary in India: ₹15–30 LPA based on experience
CCIE Security Salary in India: ₹18–35 LPA
CCIE Salary in USA: $120,000–$180,000 per annum
CCIE Network Engineer Salary: ₹20–40 LPA in the best MNCs
With the proper skills and certifications, the requirement for CCIE Security and network engineers is escalating globally.
Why Learn Subnetting at UniNets?
At UniNets, we blend theory and hands-on labs to make you proficient in:
Subnetting and IP planning
Routing protocols (such as OSPF, EIGRP, RIP)
Real-time configuration on routers/switches
Complete CCNA, CCNP, and CCIE training
If you’re new to networking or getting ready for high-level certifications, we make sure you establish a strong foundation.
Quick Subnetting Example
IP Address: 192.168.10.0
Subnet Mask: 255.255.255.0
CIDR Notation: /24
Hosts per Subnet: 254
Subnets Possible (Class C): 256
Such practical dissections assist in exams, interviews, and real-world executions.
Conclusion
It is essential for network engineers, IT admins, and cloud aspirants to understand subnetting, computer network subnet mask, and computer network system masking. These principles are not only academic but are also central to setting up network hardware and software, routing data traffic, and securing enterprise networks.
At UniNets, we assist you in acquiring these fundamental networking skills and lead you towards high-level certifications such as CCIE, where subnetting mastery is a prerequisite.
Author: Shubham Saini
SEO Executive at UniNets | Driving digital growth for a top e-learning platform in IT, Cloud, and Network Security UniNets Cloud computing courses | Cyber Security courses . visit:www.uninets.com
