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Device Programmability means the ability to configure, control, and manage network devices (like routers, switches, firewalls) using software or code, rather than logging in manually and typing CLI commands. In short —👉 It’s how network automation happens. Instead of an engineer configuring 100 devices manually, scripts or automation tools push configurations automatically using APIs or
OpenDaylight (ODL) is an open-source Software-Defined Networking (SDN) controller platform developed under the Linux Foundation.It provides a modular and flexible platform that allows network administrators and developers to build, manage, and automate modern networks using open standards. In simple terms —👉 OpenDaylight acts as the “brain” of an SDN network, controlling how switches, routers, and
Software-Defined Networking (SDN) is a modern approach to network design and management that separates the control plane from the data plane.This means the intelligence (decision-making) of the network is centralized in a software-based controller, while the hardware devices (switches/routers) just forward packets based on those instructions. ⚙️ Traditional Networking vs SDN Feature Traditional Networking Software-Defined
Basic VLAN and interface configuration on a Cisco switch involves creating VLANs, assigning ports, and managing trunk/access modes. The fundamental commands and workflow are outlined below. Create a VLAN To create VLANs (e.g., VLAN 10 and VLAN 20): Switch> enableSwitch# configure terminalSwitch(config)# vlan 10Switch(config-vlan)# exitSwitch(config)# vlan 20Switch(config-vlan)# exit This creates VLANs 10 and 20 if
A basic Cisco switch configuration involves initial setup tasks like setting the hostname, securing access, configuring management IP, and saving the configuration. Here are the main steps and key commands for a standard, unconfigured Cisco switch. Basic Configuration Steps Connect to the Switch Enter Privileged EXEC Mode Switch> enable Enter Global Configuration Mode Switch# config t Set
Let’s walk through a real-world example: 👉 You send a WhatsApp text message to your friend. 📩 Step-by-Step Flow Through OSI Layers At Your Side (Sender) Across the Network At Your Friend’s Side (Receiver) ✅ In short:
The OSI Reference Model (Open Systems Interconnection Model) is a conceptual framework used to understand and describe how different networking protocols and systems communicate with each other. It breaks down the complex process of data communication into 7 distinct layers, each with specific functions. 🔹 7 Layers of the OSI Model (Top to Bottom) 7.
An IP Address (Internet Protocol Address) is a unique logical address assigned to each device in a network so that it can be identified and communicate with other devices. 👉 Think of it like the phone number of a device on a network.Without it, devices cannot send/receive data properly. ✅ Types of IP Addresses ✅
A protocol in computer networking is a set of rules and standards that define how two or more devices communicate with each other over a network. Think of it like a language: ✅ Key Functions of Protocols ✅ Common Types of Protocols 🔹 Network Communication Protocols 🔹 Web & Application Protocols 🔹 Security Protocols 🔹
A MAC Address (Media Access Control Address) is a unique hardware identifier given to every network interface card (NIC), whether it’s wired (Ethernet) or wireless (Wi-Fi). Think of it like a permanent serial number for your network card, used at the data link layer (Layer 2) of the OSI model. ✅ Format of a MAC
The Lazy Networker 