News — 25GbE
DAC Cable No Link? Fix 25G/100G FEC Mismatches (2026 Guide)
Why won't your 25G or 100G DAC cable link up? It's usually a FEC mismatch, not a bad cable. Here's how to diagnose and fix it across Cisco, Juniper, Arista, Ubiquiti, MikroTik, and Fortinet.
Arista DCS-7050SX3-48YC8-F: Used & Tested Pricing, Specs, and Airflow Guide (2026)
A complete guide to the Arista DCS-7050SX3-48YC8-F — a 1RU leaf switch with 48x25GbE SFP28 + 8x100GbE QSFP28 ports and front-to-rear airflow. Covers specs, the "-F" vs "-R" airflow difference, 2026 used pricing, and what to verify before you buy.