Exactly as described, this counts 2048-to-4095-byte frames transmitted on this benchmark port. Reaching this size range requires both a jumbo-capable link end-to-end and a test profile or EMIX custom frame size explicitly configured into this range, so nonzero counts here are a strong confirmation jumbo frame support is actually working across the full test path, not just accepted locally by the generator. For example, a custom u-frame size set to 3000 bytes populating this bucket with the expected packet count, alongside zero frameloss, would validate that the intermediate network genuinely passes 3000-byte jumbo frames.