News — Networking
Passive DAC Cable Distance Limits: When You Need AOC Instead
How far can a passive DAC cable really run at 25G, 100G, or 400G? Here's the max reliable length before you need an active optical cable (AOC) instead.
QSFP28 Breakout Cables: 100G to 4x25G vs 4x10G Guide
Which QSFP28 breakout cable do you need, 4x25G or 4x10G? Learn how switch port breakout modes work and why mismatched configs cause link failures.
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.