link 0 saturated

Diagnostic checklist

• This LINK is pegged at its negotiated rate — both devices it joins may still have fabric headroom, the cable between them does not.
• Check what the link negotiated to: a slower cable or a slower port on either end clamps the pair, so a 100G port can be running at 10G.
• Bond a second cable into a LAG, re-cable to faster ports, or move traffic onto another path.