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VXLAN MTU and Fragmentation: The 50-Byte Tax

VXLAN MTU and Fragmentation: The 50-Byte Tax

Why VXLAN overlays break large transfers: the 50-byte tax, 1450 vs 9000 MTU, cloud and tunnel underlays, MSS clamping, offloads and the counters that

admin admin 2026-09-14
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NVMe over TCP: Target and Initiator Setup Guide

NVMe over TCP: Target and Initiator Setup Guide

Set up NVMe over TCP end to end: nvmet kernel target via nvmetcli, host NQN access control, nvme-cli discovery and connect, multipath failover and jum

admin admin 2026-09-14
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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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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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CWDM 与 DWDM 波分复用器详解：原理与选型指南

CWDM 与 DWDM 波分复用器详解：原理与选型指南

CWDM 与 DWDM 波分复用器详解：完整拆解 WDM 系统组成部件，列出 CWDM 的 18 个标准波长与 DWDM 信道间隔，给出 40 公里链路预算算例、CWDM 与 DWDM 部署对比表、ROADM 功率均衡要点以及施工验收与常见问题解答。

admin admin 2026-08-29
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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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Cisco Nexus 9000 VXLAN BGP EVPN Fabric Design Guide

Cisco Nexus 9000 VXLAN BGP EVPN Fabric Design Guide

Design a Cisco Nexus 9000 VXLAN BGP EVPN fabric: 3-stage and 5-stage CLOS, leaf roles, spine route reflectors, underlay choice and IP addressing plan.

admin admin 2026-08-28
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Spine-Leaf vs Three-Tier: Data Center Network Design

Spine-Leaf vs Three-Tier: Data Center Network Design

<p>Compare three-tier and spine-leaf Clos designs: hop counts, STP blocking, ECMP routing, oversubscription math, hardware choices and migration steps

admin admin 2026-08-28
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