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Brand guides
Cisco Nexus: 2026 data center guide
Cisco Nexus data center: 9000/9300/9500, NX-OS vs ACI, VXLAN EVPN, Nexus Dashboard.
April 15, 2026
Technical resources
Original optics, documented by reference.
Buying guides, technical notes and manufacturer-reference resources for professional optical links.
Editorial scope
SFP through QSFP-DD · original manufacturer references · selection boundaries · procurement context
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Brand guides
Cisco Meraki: benefits of cloud-managed networking
Cisco Meraki: MS/MR/MX/MV/MT portfolio, mandatory licenses, cloud benefits, and limitations vs Catalyst.
April 15, 2026
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Brand guides
Cisco Catalyst portfolio: complete 2026 guide
2026 Cisco Catalyst portfolio: 1200 to 9600, DNA licenses, IOS-XE, and sizing by company size.
April 15, 2026
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Brand guides
Cisco IOS: Essential Commands You Need to Know
Cisco IOS/IOS-XE: essential commands for VLANs, routing, QoS, security, and troubleshooting. CLI reference.
April 15, 2026
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Network glossary
What Is a Proxy? Forward, Reverse, and Transparent Proxies
What is a proxy? Forward, reverse, and transparent proxies, SWG, features, vendors, and SASE migration.
April 15, 2026
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Network glossary
What Is MACsec? Layer 2 Encryption Explained
What is MACsec? 802.1AE L2 AES-256-GCM, hop-by-hop, Cisco/Juniper/Aruba, vs IPsec.
April 15, 2026
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Network glossary
What Is a Load Balancer? Definition and How It Works
What is a load balancer? L4/L7, GSLB, algorithms, F5, HAProxy, NGINX, and cloud LB.
April 15, 2026
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Network glossary
What Is an NGFW? Next-Generation Firewall
What is an NGFW? L7 features, App-ID, IPS/AV/URL, SSL decryption, and leading vendors.
April 15, 2026
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Network glossary
What Is an IPS / IDS? Intrusion Detection and Prevention
What are IPS and IDS? Intrusion detection, signatures versus anomaly detection, NGFW, and Snort.
April 15, 2026
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Network glossary
What Is 802.1X? Network Authentication
What is 802.1X? Port-based authentication, EAP-TLS/PEAP, NAC, and Enterprise WiFi.
April 15, 2026
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Network glossary
What Is an SFP Module? Definition and Types
What is an SFP module? 1G-400G families, SR/LR/ER interfaces, DOM, and compatibility.
April 15, 2026
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Network glossary
What Is PoE? Power over Ethernet Explained
What is PoE? 802.3af/at/bt, Type 3/4, applications, cabling, and switch power budget.
April 15, 2026