SW-505 RFC 2544 Test Report

This page presents the RFC 2544 benchmark test results for the Brainboxes SW-505 5-port unmanaged Fast Ethernet switch. RFC 2544 defines a standardised methodology for benchmarking network interconnect devices, covering throughput, latency, frame loss rate, and back-to-back frame handling.

Testing was performed using the Xena2544 v2.97 automated test suite on 16 January 2026, with a total test duration of 1 hour 36 minutes. All tests used IEEE default frame sizes (64, 128, 256, 512, 1024, 1280, and 1518 bytes) in a full-mesh, bidirectional topology across all 5 ports at 100 Mbps.

Result: All Tests Passed

The SW-505 passed all RFC 2544 tests with zero frame loss at full line rate across all frame sizes and all port combinations.

Test	Result
Throughput	Pass — 100% line rate, all frame sizes
Latency & Jitter	Pass — at 50% and 100% rates
Frame Loss Rate	Pass — 0% loss at 50% and 100% rates
Back-to-Back	Pass — at 50% and 100% rates

Test Configuration

Parameter	Value
Topology	Mesh
Direction	Bidirectional
Frame Size Type	IEEE Default
Frame Sizes	64, 128, 256, 512, 1024, 1280, 1518 bytes
Port Count	5
Port Speed	100 Mbps (Auto-negotiated)
Test Tool	Xena2544 v2.97
Test Chassis	Abyssinian (S/N 2343912)
Module	Odin-1G-3S-6P (S/N 870628)

Port Configuration

Port ID	Interface Type	Speed	Rate
P-0-0-0	SFP-E 10/100/1000M	Auto	100 Mbps
P-0-0-1	SFP-E 10/100/1000M	Auto	100 Mbps
P-0-0-2	SFP-E 10/100/1000M	Auto	100 Mbps
P-0-0-3	SFP-E 10/100/1000M	Auto	100 Mbps
P-0-0-4	SFP-E 10/100/1000M	Auto	100 Mbps

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Throughput Test

The throughput test determines the maximum rate at which none of the offered frames are dropped by the device. Each frame size was tested for 30 seconds over 3 iterations, with a binary search from 95–100% line rate and 0% acceptable loss.

The SW-505 achieved 100% throughput at line rate for all frame sizes with zero frame loss.

Frame Size (bytes)	Offered Rate	Tx Rate (L1)	Tx Rate (L2)	Tx (Frames)	Rx (Frames)	Loss	Result
64	100%	499.99 Mbps	380.95 Mbps	22,321,200	22,321,200	0	Pass
128	100%	499.98 Mbps	432.41 Mbps	12,668,400	12,668,400	0	Pass
256	100%	499.98 Mbps	463.75 Mbps	6,793,200	6,793,200	0	Pass
512	100%	499.99 Mbps	481.20 Mbps	3,524,400	3,524,400	0	Pass
1024	100%	499.95 Mbps	490.37 Mbps	1,795,800	1,795,800	0	Pass
1280	100%	499.82 Mbps	492.13 Mbps	1,441,800	1,441,800	0	Pass
1518	100%	499.79 Mbps	493.29 Mbps	1,218,600	1,218,600	0	Pass

All 20 bidirectional port-to-port flows showed identical throughput with zero loss at every frame size.

Per-Port Throughput Results

Each port transmitted and received equally across all 4 destination ports. All 5 ports operated at full line rate with zero loss. Data shown is for port P-0-0-0; all other ports produced identical results.

Port P-0-0-0

Frame Size (bytes)	Tx (Frames)	Tx Rate (L1)	Tx Rate (L2)	Tx Rate (fps)	Rx (Frames)
64	4,464,240	100 Mbps	76.19 Mbps	148,808	4,464,240
128	2,533,680	100 Mbps	86.48 Mbps	84,456	2,533,680
256	1,358,640	100 Mbps	92.75 Mbps	45,288	1,358,640
512	704,880	100 Mbps	96.24 Mbps	23,496	704,880
1024	359,160	99.99 Mbps	98.07 Mbps	11,972	359,160
1280	288,360	99.96 Mbps	98.43 Mbps	9,612	288,360
1518	243,720	99.96 Mbps	98.66 Mbps	8,124	243,720

Ports P-0-0-1 through P-0-0-4 — identical results

All remaining 4 ports produced the same throughput, frame counts, and zero loss as P-0-0-0 above.

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Latency and Jitter Test

The latency and jitter test measures forwarding delay and its variation across frame sizes. Tests were run for 30 seconds over 3 iterations using last-to-last latency mode, relative to the throughput test results. Testing was performed at both 50% and 100% of line rate.

Results at 50% Rate

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)	Result
64	8.550	7.111	21.929	0.139	11.907	Pass
128	14.479	12.243	33.916	0.153	21.288	Pass
256	26.824	22.506	61.860	0.341	32.305	Pass
512	50.858	43.033	163.908	0.593	80.294	Pass
1024	125.995	84.086	287.205	0.570	202.781	Pass
1280	118.526	104.613	278.481	0.773	173.723	Pass
1518	203.064	123.793	445.405	1.016	321.203	Pass

Per-Port Latency and Jitter at 50% Rate

Port P-0-0-0

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	8.375	7.111	17.551	0.212	10.295
128	13.884	12.243	33.916	0.131	21.288
256	25.590	22.506	58.612	0.437	27.590
512	47.431	43.033	127.080	0.592	42.865
1024	137.596	84.110	249.535	0.426	165.087
1280	118.479	104.613	254.739	0.833	149.885
1518	241.284	123.793	445.405	1.105	321.203

Port P-0-0-1

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	8.378	7.111	20.221	0.215	11.907
128	13.659	12.243	31.679	0.133	12.291
256	25.633	22.506	54.282	0.277	24.319
512	51.794	43.033	163.908	0.728	79.549
1024	129.378	84.086	266.542	0.570	182.311
1280	112.475	104.613	264.866	0.875	104.084
1518	197.729	123.793	378.148	1.065	214.977

Port P-0-0-2

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	8.635	7.111	21.929	0.097	8.034
128	14.791	12.243	32.978	0.156	15.322
256	27.325	22.530	49.231	0.329	24.343
512	51.724	43.033	127.176	0.579	42.937
1024	116.625	84.086	287.205	0.661	202.781
1280	123.267	104.613	260.921	0.753	156.211
1518	166.019	123.793	370.883	0.999	246.874

Port P-0-0-3

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	8.885	7.111	16.180	0.087	8.707
128	15.124	12.243	28.143	0.166	14.577
256	29.555	22.506	61.860	0.349	32.305
512	51.466	43.033	121.379	0.447	78.153
1024	114.704	84.110	261.274	0.612	177.091
1280	120.745	104.613	215.145	0.665	110.363
1518	184.241	123.793	328.042	0.931	204.152

Port P-0-0-4

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	8.475	7.111	15.290	0.086	7.649
128	14.937	12.243	24.847	0.174	12.099
256	26.015	22.506	54.138	0.315	31.559
512	51.875	43.033	123.400	0.619	80.294
1024	131.672	84.110	227.813	0.581	125.132
1280	117.662	104.613	278.481	0.717	173.723
1518	226.049	123.793	356.258	0.979	232.296

Results at 100% Rate

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)	Result
64	11.082	7.135	20.798	0.015	6.735	Pass
128	17.585	12.267	28.744	0.021	11.883	Pass
256	35.677	22.554	63.447	0.015	22.154	Pass
512	67.035	43.057	149.812	0.024	42.793	Pass
1024	127.187	84.110	230.315	0.023	83.566	Pass
1280	201.623	104.613	372.751	0.029	104.036	Pass
1518	262.921	123.793	458.659	1.134	246.152	Pass

Per-Port Latency and Jitter at 100% Rate

Port P-0-0-0

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	10.280	7.135	17.430	0.015	4.907
128	15.589	12.315	21.841	0.024	9.164
256	33.527	22.554	47.571	0.015	20.109
512	60.644	43.057	98.888	0.025	42.552
1024	119.551	84.110	155.866	0.025	71.394
1280	196.289	104.613	353.460	0.029	95.569
1518	292.772	123.817	458.515	1.187	246.152

Port P-0-0-1

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	10.425	7.183	15.939	0.015	5.484
128	17.773	12.291	27.421	0.021	10.151
256	40.174	22.554	63.447	0.015	21.047
512	61.489	43.057	89.074	0.023	42.793
1024	122.079	84.134	192.549	0.024	83.566
1280	206.973	104.637	372.751	0.030	104.036
1518	235.771	123.817	422.553	1.106	123.208

Port P-0-0-2

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	11.011	7.159	19.812	0.014	6.711
128	17.532	12.315	26.387	0.021	11.883
256	35.450	22.554	49.014	0.015	22.154
512	69.825	43.057	129.221	0.024	42.576
1024	135.480	84.110	225.264	0.023	83.566
1280	202.429	104.637	353.989	0.030	104.036
1518	215.351	123.817	440.883	1.188	246.152

Port P-0-0-3

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	11.916	7.159	20.774	0.014	6.735
128	18.485	12.291	26.387	0.020	11.858
256	34.164	22.554	49.062	0.015	22.106
512	78.217	43.057	149.812	0.025	42.625
1024	130.533	84.110	191.659	0.023	83.614
1280	196.115	104.637	342.779	0.028	104.012
1518	249.147	123.793	458.659	1.104	246.152

Port P-0-0-4

Frame Size (bytes)	Avg Latency (us)	Min Latency (us)	Max Latency (us)	Avg Jitter (us)	Max Jitter (us)
64	11.778	7.135	20.798	0.014	6.735
128	18.547	12.267	28.744	0.020	11.858
256	35.072	22.554	53.007	0.016	22.058
512	65.000	43.057	117.049	0.023	42.576
1024	128.322	84.134	230.315	0.023	83.494
1280	206.308	104.661	321.370	0.028	103.507
1518	321.563	123.817	457.264	1.184	246.152

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Frame Loss Rate Test

The frame loss rate test measures the percentage of frames that are not forwarded by the device under steady-state conditions. Each frame size was tested for 30 seconds over 3 iterations. No pass/fail criteria were configured.

The SW-505 achieved zero frame loss at both 50% and 100% rate across all frame sizes.

Results at 50% Rate

Frame Size (bytes)	Tx (Frames)	Rx (Frames)	Tx Rate (L1)	Loss (Frames)	Loss Rate	Result
64	11,160,600	11,160,600	250.00 Mbps	0	0%	Pass
128	6,334,200	6,334,200	249.99 Mbps	0	0%	Pass
256	3,396,600	3,396,600	249.99 Mbps	0	0%	Pass
512	1,762,200	1,762,200	250.00 Mbps	0	0%	Pass
1024	897,600	897,600	249.89 Mbps	0	0%	Pass
1280	720,600	720,600	249.81 Mbps	0	0%	Pass
1518	609,000	609,000	249.77 Mbps	0	0%	Pass

Per-Port Frame Loss at 50% Rate

All 5 ports transmitted and received equal frame counts with zero loss at 50% rate.

Port P-0-0-0

Frame Size (bytes)	Tx (Frames)	Tx Rate (L1)	Tx Rate (fps)	Rx (Frames)
64	2,232,120	50 Mbps	74,404	2,232,120
128	1,266,840	50 Mbps	42,228	1,266,840
256	679,320	50 Mbps	22,644	679,320
512	352,440	50 Mbps	11,748	352,440
1024	179,520	49.98 Mbps	5,984	179,520
1280	144,120	49.96 Mbps	4,804	144,120
1518	121,800	49.95 Mbps	4,060	121,800

Ports P-0-0-1 through P-0-0-4 — identical results

All remaining 4 ports produced the same frame counts and zero loss as P-0-0-0 above.

Results at 100% Rate

Frame Size (bytes)	Tx (Frames)	Rx (Frames)	Tx Rate (L1)	Loss (Frames)	Loss Rate	Result
64	22,321,200	22,321,200	499.99 Mbps	0	0%	Pass
128	12,668,400	12,668,400	499.98 Mbps	0	0%	Pass
256	6,793,200	6,793,200	499.98 Mbps	0	0%	Pass
512	3,524,400	3,524,400	499.99 Mbps	0	0%	Pass
1024	1,795,800	1,795,800	499.95 Mbps	0	0%	Pass
1280	1,441,800	1,441,800	499.82 Mbps	0	0%	Pass
1518	1,218,600	1,218,600	499.79 Mbps	0	0%	Pass

Per-Port Frame Loss at 100% Rate

All 5 ports transmitted and received equal frame counts with zero loss at 100% rate.

Port P-0-0-0

Frame Size (bytes)	Tx (Frames)	Tx Rate (L1)	Tx Rate (fps)	Rx (Frames)
64	4,464,240	100 Mbps	148,808	4,464,240
128	2,533,680	100 Mbps	84,456	2,533,680
256	1,358,640	100 Mbps	45,288	1,358,640
512	704,880	100 Mbps	23,496	704,880
1024	359,160	99.99 Mbps	11,972	359,160
1280	288,360	99.96 Mbps	9,612	288,360
1518	243,720	99.96 Mbps	8,124	243,720

Ports P-0-0-1 through P-0-0-4 — identical results

All remaining 4 ports produced the same frame counts and zero loss as P-0-0-0 above.

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Back-to-Back Test

The back-to-back test measures the maximum number of frames that can be sent at a given rate without any frame loss. Each frame size was tested with a 30-second burst over 3 iterations.

Results at 50% Rate

Frame Size (bytes)	Tx Burst (Frames)	Tx Burst (Bytes)	Max Offered Rate (fps)	Max Offered Rate (Mbps)	Result
64	11,160,700	714,284,800	370,751	249.14	Pass
128	6,334,440	810,808,320	210,484	249.21	Pass
256	3,396,720	869,560,320	112,845	249.16	Pass
512	1,762,200	902,246,400	58,536	249.13	Pass
1024	897,980	919,531,520	29,933	250.00	Pass
1280	721,140	923,059,200	23,981	249.41	Pass
1518	609,540	925,281,720	20,241	249.05	Pass

Per-Port Back-to-Back at 50% Rate

Each port sustained the full 30-second burst with zero loss.

Port P-0-0-0

Frame Size (bytes)	Tx Burst (Frames)	Tx Burst (Bytes)
64	2,232,140	142,856,960
128	1,266,888	162,161,664
256	679,344	173,912,064
512	352,440	180,449,280
1024	179,596	183,906,304
1280	144,228	184,611,840
1518	121,908	185,056,344

Ports P-0-0-1 through P-0-0-4 — identical results

All remaining 4 ports produced the same burst frame counts and zero loss as P-0-0-0 above.

Results at 100% Rate

Frame Size (bytes)	Tx Burst (Frames)	Tx Burst (Bytes)	Max Offered Rate (fps)	Max Offered Rate (Mbps)	Result
64	22,321,420	1,428,570,880	744,047	500.00	Pass
128	12,668,900	1,621,619,200	422,297	500.00	Pass
256	6,793,460	1,739,125,760	226,449	500.00	Pass
512	3,524,420	1,804,503,040	117,481	500.00	Pass
1024	1,795,960	1,839,063,040	59,865	500.00	Pass
1280	1,442,300	1,846,144,000	48,077	500.00	Pass
1518	1,219,100	1,850,593,800	40,637	499.99	Pass

Per-Port Back-to-Back at 100% Rate

Each port sustained the full 30-second burst at line rate with zero loss.

Port P-0-0-0

Frame Size (bytes)	Tx Burst (Frames)	Tx Burst (Bytes)
64	4,464,284	285,714,176
128	2,533,780	324,323,840
256	1,358,692	347,825,152
512	704,884	360,900,608
1024	359,192	367,812,608
1280	288,460	369,228,800
1518	243,820	370,118,760

Ports P-0-0-1 through P-0-0-4 — identical results

All remaining 4 ports produced the same burst frame counts and zero loss as P-0-0-0 above.

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About This Test

RFC 2544 defines a standardised benchmarking methodology for network interconnect devices. The tests cover:

• Throughput — maximum rate at which no frames are lost
• Latency — forwarding delay at various frame sizes and rates
• Frame Loss Rate — percentage of frames lost under load
• Back-to-Back — maximum burst length the device can handle without loss

Testing was performed using the Xena2544 automated test suite. Each test was run for 3 iterations and results averaged to minimise measurement variance.