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Buying guides
How to choose a 10G SFP by distance, fiber and equipment
A practical method for selecting a 10G SFP+ without confusing distance, fiber type, optical standard and manufacturer support.
September 5, 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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Buying guides
SFP+ 10G: a multi-vendor guide to choosing the right module
Choose a 10G SFP+ module by fiber, distance and host equipment, with key Cisco, Meraki, Juniper, Aruba and Fortinet references.
September 5, 2026
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Buying guides
Budget Switches for SMBs: Best Value for Money
Expert guide to budget switches for SMBs: Aruba Instant On 1960 vs Cisco CBS250 vs Netgear MS324TX. The best value for money, PoE, VLANs, and management for 10–100 users.
April 15, 2026
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Buying guides
How to Choose DAC and AOC Cables
Expert guide to DAC and AOC cables: differences, reach, compatibility, and pricing. SFP+, SFP28, QSFP28, QSFP-DD. When to choose DAC vs AOC vs transceiver modules and fiber.
April 15, 2026
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Buying guides
BGP Edge Router for a Regional ISP
Expert guide to BGP edge routers for regional ISPs: Juniper MX204/MX480 vs Cisco ASR 9901/9902 vs Nokia 7750. Full BGP table, MPLS L3VPN, Internet peering, and Segment Routing.
April 15, 2026
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Buying guides
Juniper EX Series Switches: Buying Guide
Expert guide to the Juniper EX Series: EX2300, EX3400, EX4300, EX4400, EX4650, EX9200. Campus positioning, Virtual Chassis, Junos OS, Mist AI, part numbers, and pricing.
April 15, 2026
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Buying guides
How to Choose a FortiGate Firewall
Expert guide to choosing a FortiGate: models from 40F to 7000, threat protection throughput sizing, UTP/ATP/Enterprise licenses, HA clustering, SD-WAN, and multi-tenant VDOMs. Part numbers and pricing.
April 15, 2026
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Buying guides
Data Center ToR Switch: Complete Guide
Expert guide to data center ToR (Top-of-Rack) switches: Cisco Nexus 93180YC-FX, Juniper QFX5120-48Y, Aruba CX 8325. Density, buffers, oversubscription, and part numbers.
April 15, 2026
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Buying guides
25G/100G Aggregation Switch: Buying Guide
Expert guide to 25G/100G data center aggregation switches: Cisco Nexus 9336C-FX2, Juniper QFX5120-32C, and Aruba CX 8325. Spine-leaf architecture and oversubscription sizing.
April 15, 2026
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Buying guides
How to Choose 40G QSFP+ Modules
Expert guide to 40G QSFP+ modules: SR4, LR4, ER4, and 4×10G breakout. When to use 40G versus migrating to 100G. Cisco/Juniper part numbers and prices.
April 15, 2026
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Buying guides
Branch Router for Remote Work and SD-WAN
Expert guide to branch routers for remote work and SD-WAN: FortiGate 40F/60F vs Cisco Meraki MX67 vs Catalyst 8200. Dual-WAN configuration, VPN, ZTNA, and pricing.
April 15, 2026
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Buying guides
Enterprise core switch: Cisco Catalyst 9500 vs Juniper EX4600
Enterprise core switch comparison: Cisco Catalyst 9500 vs Juniper EX4650 for campus distribution/core deployments. Performance, latency, licensing, and 5-year TCO.
April 15, 2026