Technical resources
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
Expert guide to 10G SFP+ modules by brand: Cisco SFP-10G-SR/LR, Juniper EX-SFP-10GE, Fortinet FN-TRAN-SFP+, and HPE Aruba JL271A. Exact part numbers, reach, compatibility, and pricing.
April 15, 2026
Expert guide to 10 Gigabit switches: campus uplinks, data center ToR, and multi-gig Wi-Fi 6E. Cisco Catalyst 9300/9500, Juniper EX4650, and Aruba CX 6300. Part numbers, selection criteria, and capacity planning.
April 15, 2026
Expert campus access switch guide: Cisco Catalyst 9200/9300 vs Juniper EX4400 vs HPE Aruba CX 6300. PoE, stacking, MACsec, DNA/Mist, user-based sizing, part numbers, and pricing.
April 15, 2026
Expert guide to choosing an enterprise NGFW: FortiGate vs Palo Alto vs Cisco Firepower. Real-world threat protection performance, licensing, 5-year TCO, and sizing by number of users.
April 15, 2026
Expert SD-WAN router guide: Cisco Catalyst 8000 (Viptela) vs FortiGate Secure SD-WAN vs Juniper SRX + SVR. Architecture, performance, SASE security, TCO, and multi-site sizing.
April 15, 2026
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
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
