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Leaf-Spine vs Three-Tier: Oversubscription and ECMP Design

Leaf-Spine vs Three-Tier: Oversubscription and ECMP Design

Compare leaf-spine and three-tier data center designs on oversubscription, ECMP bandwidth use and scale-out, with the ratios engineers should target.

admin admin 2026-10-03
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Cisco Nexus 9300 vs 9500: Leaf and Spine Selection

Cisco Nexus 9300 vs 9500: Leaf and Spine Selection

Fixed 1RU leaves or modular chassis spines? How to choose between Cisco Nexus 9300 and 9500 using oversubscription, uplink speed, buffers and redundan

admin admin 2026-09-26
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Spine-Leaf vs Three-Tier: STP Blocking and Bandwidth

Spine-Leaf vs Three-Tier: STP Blocking and Bandwidth

Three-tier networks block redundant links in spanning tree, so half the cabling carries no traffic. Quantify the bandwidth, hop-count and failure gap.

admin admin 2026-09-13
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Leaf-Spine vs Traditional Three-Tier Topology Compared

Leaf-Spine vs Traditional Three-Tier Topology Compared

Compare leaf-spine vs traditional three-tier data centers and pick a topology using a scale, cost and operations selection matrix with worked examples

admin admin 2026-09-08
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Leaf-Spine vs Three-Tier: 2026 Data Center Design Guide

Leaf-Spine vs Three-Tier: 2026 Data Center Design Guide

Leaf-spine vs three-tier in 2026: how 102.4T switch silicon, 800G ports, liquid cooling, copper reach limits and power per bit reshape the design.

admin admin 2026-09-03
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Spine-Leaf vs Traditional Three-Tier: Topology and Latency Compared

Spine-Leaf vs Traditional Three-Tier: Topology and Latency Compared

A decision checklist for choosing spine-leaf or three-tier: traffic mix, port count, budget and ops skills, with a scenario matrix and five buying que

admin admin 2026-09-02
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Spine-Leaf vs Traditional 3-Tier: Design and Migration Guide

Spine-Leaf vs Traditional 3-Tier: Design and Migration Guide

Spine-leaf vs three-tier data center design: Clos mechanics, ECMP, VXLAN EVPN, oversubscription maths and a phased brownfield migration plan.

admin admin 2026-08-31
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Data Center ToR Switch Selection: Key Specs and Comparison Guide

Data Center ToR Switch Selection: Key Specs and Comparison Guide

How to choose a data center ToR switch: port density, switching capacity, buffer and PFC, latency, MLAG vs EVPN multi-homing, optics, automation and r

admin admin 2026-08-30
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Leaf-Spine Architecture: Two-Tier Data Center Design

Leaf-Spine Architecture: Two-Tier Data Center Design

Why leaf-spine replaced three-tier data centers: STP blocking, east-west traffic, oversubscription math, BGP ASN design, anycast gateway and when not

admin admin 2026-08-29
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400G Spine 与 100G Leaf 混合架构：链路一致性保障方案

400G Spine 与 100G Leaf 混合架构：链路一致性保障方案

400G Spine 与 100G Leaf 混合架构的链路一致性实践：Breakout 拆分配置与完整验证流程、FEC 模式必须两端显式指定、端口组与光模块兼容性约束、收敛比与 ECMP 等价路径设计，确保 AI 数据中心的高速链路稳定可靠。

admin admin 2026-08-27
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