Networking / AV-IT
Link Aggregation (LAG / LACP)
01 — Definition
Bundling several physical links between two switches into one logical link, for more bandwidth and redundancy; LACP (802.3ad) negotiates the bundle on its own. The catch: traffic is distributed per flow, through a hash, not per packet — so a single Dante or NDI stream never exceeds the speed of one physical link. A 4×1 Gbps LAG will never give a single 3 Gbps stream a home.
02 — In the field
A LAG raises aggregate capacity, not per-stream capacity. If one NDI High Bandwidth stream needs more than 1 Gbps, your 4×1 Gbps LAG changes nothing: you need a 10 GbE link. Keep LAG for many parallel flows, not for one fat flow.