الشبكات

Executive Summary (TL;DR) The Myth: Border Gateway Protocol (BGP) is only used by Internet Service Providers (ISPs) to route global internet traffic. The 2026 Reality: BGP has become the standard internal routing protocol for massive enterprise data centers, SD-WAN architectures,...

Executive Summary (TL;DR) Legacy STP (802.1D): Obsolete; convergence takes 30-50 seconds, causing unacceptable network outages. RSTP (802.1w): Best for flat access networks and edge ports; delivers sub-second convergence. MSTP (802.1s): Mandatory for large campus net...

Executive Summary Power over Ethernet (PoE) budgeting determines whether enterprise switches can reliably power high-density Wi-Fi 6E and Wi-Fi 7 access points. Accurate PoE planning requires: IEEE 802.3af / 802.3at / 802.3bt understanding 4-P...

Executive Decision Summary Enterprise high availability (HA) strategies fall into three primary models: Stacking → Single Distributed Control Plane + Single Distributed Forwarding Plane Virtual Chassis → Centraliz...

Quick take This is not a buying guide. It's the rack-level deployment runbook we use when we have to bring up 100G-400G links in AI/HPC pods and keep them stable after the rack gets crowded, hot, and touched by real humans. What this ru...

Quick take On paper, copper is simple. In real racks, it's not. The difference between DAC, ACC, AEC, and AOC usually shows up after you bundle cables, route tight bends behind ports, and push sustained traffic-not at link-up. DAC is stil...

Quick take ACC and AEC are "active copper" cable assemblies-copper cables with electronics inside the connector ends-to make high-speed links more stable than passive DAC in real racks. ACC (Active Copper Cable) exists across a wide range of generations (from le...

Quick take In AI/HPC data centers, mixed-speed fabrics are normal: server and storage generations rarely upgrade at the same time as the switching fabric. The practical approach is to (1) pick where each speed tier...

Quick take This guide covers how to use a QSFP-DD to 4×QSFP56 breakout DAC to cable one 400G switch port into four 100G links for in-rack / adjacent-rack deployments. It focuses on AI/HPC pods first, then extends the same cabling discipline to campus core + storage e...

Quick take 10G is still common for legacy access and cost-sensitive edge links, but it can become a scaling bottleneck in modern racks. 25G became the “default” server-access speed in many data centers because it delivers a big jump in bandwidth per port with a clean operational mo...