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The OPTINOC Blog

Guides, comparisons and news for networking professionals.

All articles Buying guides Technology & Architecture Network glossary News & Trends Brand guides Industry use cases Comparisons Datasheets For network engineers For CIOs & IT decision-makers

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Buying guides

Which data center switch should you choose?

Expert guide to choosing a data center switch: Cisco Nexus 9300/9500 vs Juniper QFX5120/5130, selection criteria (throughput, latency, oversubscription, EVPN-VXLAN), spine-leaf sizing, part numbers, and indicative pricing.

April 15, 2026

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Buying guides

SFP Module Buying Guide: Compatibility, Speeds and Reach

An expert guide to selecting the right SFP/SFP+/QSFP28/QSFP-DD module: form factors, SR/LR/ER/ZR reach, vendor compatibility, OEM vs. compatible modules, and Cisco/Juniper/Fortinet part numbers. Includes detailed comparison tables and field-proven recommendations.

April 15, 2026

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For CIOs & IT decision-makers

All-IP Migration: Voice, Video, and Data Convergence on the Network

All-IP migration: VoIP + video, QoS, reliability, SBC security, Teams/RingCentral UCaaS, phased rollout.

April 15, 2026

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For CIOs & IT decision-makers

Network SLA: Defining and Contracting Service Commitments

Network SLA: metrics, 99.9%-99.999% levels, internal/external SLAs, measurement, clauses, and exclusions.

April 15, 2026

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For CIOs & IT decision-makers

Network Governance: Roles, Processes, and Best Practices for CIOs

Network governance: roles (CIO, CISO, Architect), ITIL change management, incident management, CAB, and frameworks.

April 15, 2026

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For CIOs & IT decision-makers

Multi-Vendor Network Strategy: Balancing Risk and Cost

Multi-vendor strategy: benefits, pitfalls, segmentation, the RFP process, and coexistence through standard protocols.

April 15, 2026

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For CIOs & IT decision-makers

Shadow IT and Network Security: Regaining Control

Shadow IT: CASB-based discovery, risks, SSO, DLP, MFA, governance, and strategies for regaining control.

April 15, 2026

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For CIOs & IT decision-makers

Network Training and Certification: Investing in Team Skills

Network training and certifications: Cisco/Juniper/Fortinet, automation, budgeting, and retention.

April 15, 2026

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For CIOs & IT decision-makers

SOC and MSSP: Effectively Outsourcing Network Security

In-house SOC vs. MSSP/MDR: service tiers, costs, providers in France, SLAs, and decision criteria.

April 15, 2026

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For CIOs & IT decision-makers

ISO 27001 and Network Infrastructure: Requirements and Compliance

ISO 27001 for network infrastructure: A.13 controls, certification process, costs, and benefits.

April 15, 2026

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For CIOs & IT decision-makers

Network Mapping: Tools and Methodology for Complete Visibility

Network mapping: auto-discovery tools, NetBox, CMDB, visualization, and application flows.

April 15, 2026

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For CIOs & IT decision-makers

Multi-Cloud Connectivity: Network Strategy for CIOs

Multi-cloud strategy: Direct Connect/ExpressRoute/GCP, Megaport fabric, CSPM, FinOps, and budgeting.

April 15, 2026

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