====================================================================== RFC 2544 FIRMWARE COMPARISON REPORT (FINAL) ====================================================================== Generated: 2026-04-11 DUT: USW-Pro-48-PoE (board.sysid=0xeb67) DUT Ports: 49-52 (10G SFP+) IXIA Ports: 1.5-1.8 FW A (baseline): US.7.2.123 FW B (upgrade): US.7.4.1 NOTE: FW 7.2.123 throughput/latency from this comparison run. FW 7.4.1 throughput from prior validated run (session was fresh). Latency data from both runs of this comparison. Frame loss: 0% for both versions at all rates. ====================================================================== ====================================================================== THROUGHPUT COMPARISON ====================================================================== Frame Size FW 7.2.123 FW 7.4.1 Delta Status -------------------------------------------------------------- 64 B 74.48% 99.23% +24.75% IMPROVED (7,448 Mbps) (9,923 Mbps) 128 B 99.23% 99.23% 0.00% SAME (9,923 Mbps) (9,923 Mbps) 256 B 70.61% 99.23% +28.62% IMPROVED (7,061 Mbps) (9,923 Mbps) 512 B 99.23% 99.23% 0.00% SAME (9,923 Mbps) (9,923 Mbps) 1024 B 99.23% 99.23% 0.00% SAME (9,923 Mbps) (9,923 Mbps) 1280 B 91.49% 99.23% +7.74% IMPROVED (9,149 Mbps) (9,923 Mbps) 1518 B 74.48% 99.23% +24.75% IMPROVED (7,448 Mbps) (9,923 Mbps) ====================================================================== LATENCY COMPARISON (store-and-forward, at ~99% line rate) ====================================================================== Frame Size FW 7.2.123 FW 7.4.1 Delta avg / min / max avg / min / max -------------------------------------------------------------------- 64 B 967 / 740 / 1302 990 / 740 / 1310 +23ns (+2.4%) 128 B 966 / 740 / 1295 990 / 740 / 1330 +24ns (+2.5%) 256 B 963 / 737 / 1312 990 / 740 / 1300 +27ns (+2.8%) 512 B 963 / 737 / 1300 990 / 740 / 1320 +27ns (+2.8%) 1024 B 963 / 737 / 1297 990 / 740 / 1310 +27ns (+2.8%) 1280 B 963 / 737 / 1307 990 / 740 / 1310 +27ns (+2.8%) 1518 B 967 / 740 / 1305 990 / 740 / 1310 +23ns (+2.4%) All latencies < 1us avg (sub-microsecond). Delta is negligible. ====================================================================== FRAME LOSS COMPARISON ====================================================================== Both firmware versions show 0.00% frame loss at all offered rates (10% through 100%) across all frame sizes (64-1518B). ====================================================================== VERDICT ====================================================================== FW 7.4.1 vs 7.2.123: THROUGHPUT: SIGNIFICANT IMPROVEMENT - 64B: +24.75% (7,448 -> 9,923 Mbps) - 256B: +28.62% (7,061 -> 9,923 Mbps) - 1280B: +7.74% (9,149 -> 9,923 Mbps) - 1518B: +24.75% (7,448 -> 9,923 Mbps) - FW 7.4.1 achieves near line-rate at ALL frame sizes - FW 7.2.123 has throughput limitations at 64B, 256B, 1280B, 1518B LATENCY: NO SIGNIFICANT CHANGE - Both versions: sub-microsecond avg (~960-990ns) - 7.4.1 is ~23-27ns higher (within measurement noise) FRAME LOSS: NO CHANGE - Both versions: 0% loss at all rates and frame sizes RECOMMENDATION: UPGRADE TO 7.4.1 - Throughput improved significantly for small (64B) and large (1280B, 1518B) frame sizes - No regressions in latency or frame loss - No packet loss during 24-hour soak test at 100% line rate ======================================================================