Layer 2 switches operate at the data‑link layer, forwarding frames by MAC address within a single broadcast domain, while Layer 3 switches add IP routing capabilities for inter‑VLAN traffic; the article explains their roles, compares features, and outlines scenarios where each is the optimal choice.
Base, Coinbase’s newly launched Ethereum Layer‑2, leverages strong backing, superior transaction volume, higher profitability, active developer community, and the OP Stack’s optimistic rollup architecture to challenge rivals like Arbitrum and Optimism, while fostering a unique “Based” culture and aiming for Superchain interoperability.
This article introduces MetalLB, an open‑source load‑balancing solution for self‑managed Kubernetes clusters, explains its deployment requirements, operating principles, Layer 2 and BGP modes, and provides step‑by‑step installation and verification instructions using Kubernetes manifests, Helm, and Kustomize.
This article introduces MetalLB, explains its deployment requirements, describes its Layer2 and BGP operation modes, provides step‑by‑step installation and configuration instructions for Kubernetes clusters, and demonstrates verification of the load‑balancing functionality.
This article explains QinQ technology, its encapsulation structure, operation principles, basic and flexible implementations, campus network applications, and provides configuration examples with command‑line snippets for both basic and selective QinQ deployments.
This article explains why exposing services on a bare‑metal Kubernetes cluster requires a custom load‑balancer solution, introduces MetalLB, details its deployment requirements, explains its Layer 2 and BGP modes, provides step‑by‑step installation commands, and shows how to verify the setup.
This article explains the differences between layer‑2 and layer‑3 switches, their operating principles, ARP handling, collision and broadcast domains, VLAN concepts, configuration commands, and typical use cases, providing a comprehensive overview for networking fundamentals.
This article explains the structure and purpose of MAC addresses, details Ethernet II frame fields, describes how switches learn and forward frames, and explores VLAN tagging, configuration methods, and practical lab setups for Access, Trunk, and Hybrid ports.
This article clarifies the differences between Layer‑2 and Layer‑3 interfaces, explains VLANIF and PVID concepts, and details how access, trunk, and hybrid ports handle VLANs, providing practical insights for network engineers dealing with Ethernet switching and routing configurations.
The article provides a comprehensive technical overview of Cisco's FabricPath spine‑and‑leaf network, detailing its encapsulation, control plane, broadcast handling, host discovery, multicast support, layer‑3 routing options, multitenancy features, and hardware requirements.
In this interview, blockchain expert Wang Yuanming discusses his transition from cloud infrastructure to blockchain, outlines current technical challenges and front‑end trends such as storage, consensus, layer‑2 solutions, and smart contracts, and offers practical advice for engineers and investors while highlighting the upcoming GIAC conference in Shanghai.
