FS S3900 SERIES SWITCHES

Overview

The S3900 series switches consist of three models: S3900-24T4S, S3900-24F4S, S3900-48T4S, which are fully managed stackable Gigabit switches, equipped with Broadcom chips, supporting 10G SFP+ uplinks, designed for SMB, campus and enterprise networks.

S3900-24T4S S3900-24F4S S3900-48T4S

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FS S3900 Series Switches Performance Ixia Test Report

Posted on By FS.COM

FS joins hands with Ixia, the industry switch test authority, to run performance benchmark tests based on RFC 2544 for FS S3900 series switches. The S3900 series consists of three models: S3900-24T4S, S3900-24F4S, S3900-48T4S, which are fully managed stackable Gigabit switches, equipped with Broadcom chips, supporting 10G SFP+ uplinks, designed for SMB, campus and enterprise networks.

Ixia-test.jpg

Key Findings in Ixia Test on FS S3900 Series Switches

The Ixia test results based on RFC2544 on FS S3900 series switches mainly focus on throughput, frame loss rate and latency, which are important hardware features when judging the performance of a network switch. Key Findings in the test results are as following:


  • Throughput:All the throughput results reach the corresponding standard for Gigabit ports and 10G ports.

  • Frame Loss Rate: The frame loss rate of the three Gigabit switches is 0%, meaning no frame loss at all.

  • Latency: The latency ranges from 0-45k ns on 1G ports and 0-6k ns on 10G ports, surpasses the required 50-125k ns for Gigabit ports and 5-50k ns for 10G ports on the whole market.

Test Bed

The Ixia test with Ixia XGS12-SDL chassis starts by sending frames at the specified rate and the frames are sent from and received at the Ixia device, by which the real throughput, frame loss rate and latency of the S3900 switch are recorded.

Ixia Test Topological Graph.jpg

FS S3900 Series Switches Ixia Performance Report Analysis

Ixia test reports reveal the real performance of throughput, frame loss rate and switch latency of FS S3900 series switches (S3900-24T4S, S3900-24F4S, and S3900-48T4S) with visualized data.

Throughput

Throughput is defined as the maximum forwarding rate that a network switch can achieve without losing a single packet. The measure of packet forwarding line rate is based on the number of 64-byte packets (minimum packets) sent per unit time. The standard packet forwarding rate is 1.488 Mpps for a Gigabit Ethernet port and 14.88 Mpps for a 10G port when forwarding a 64-byte packet. Here are the theoretical forwarding rate/throughput of the three S3900 switches.

Iteam S3900-24T4S S3900-24F4S S3900-48T4S
1G Port Number 24 24 48
10G Port Number 4 4 4
Theoretical Throughput 95 Mpps 95 Mpps 130 Mpps

Both 1G and 10G ports of the three S3900 switches are tested. The real throughput of the three Gigabit switches all reaches the theoretical number. Take four 10G ports of S3900-24T4S as an example.

S3900-24T4S 10G Port Performance.png

The real forwarding rate/throughput of the four 10G ports is 59523809.4 FPS (based on 64 bytes). Thus, the real average forwarding rate for each 10G port is 14880952.35 FPS (14.880952.35 Mpps), which is almost the same as the theoretical forwarding rate 14.88 Mpps. Similarly, the real average forwarding rate for each 1G port is 1.488 Mpps, the same as the theoretical rate. Real throughput of FS S3900 series switches tested by Ixia:

Ixia Test S3900-24T4S S3900-24F4S S3900-48T4S
Real 1G Port Throughput 35.71 Mpps 35.71 Mpps 71.42 Mpps
Real 10G Port Throughput 59.52 Mpps 59.52 Mpps 59.52 Mpps
Real Overall Throughput 95.23 Mpps 95.23 Mpps 130.94 Mpps
Theoretical Throughput 95 Mpps 95 Mpps 130 Mpps

Frame Loss Rate

Defined as the percentage of frames that should have been forwarded by a network but were not, the frame loss rate is closely associated with the overall performance of a device service. None of the three FS S3900 Gigabit stackable switches lose packet or frame under Ixia test. The frame loss rate of them is 0%, which is exactly the same as the theoretical situation.

Frame Loss Rate of FS 3900 Series Switches.png

Latency

Switch forwarding latency is the amount of time it takes for the switch to move a packet from its incoming port to its outgoing port. Essentially, the latency test measures how quickly a switch can forward a packet. Normally, the switch latency for the Gigabit Ethernet switch ranges from 50~125 µs (50-125k ns) and 10GbE switch from 5~50 µs (5~50k ns). The shorter a latency is, the better the performance of a switch is.

For S3900 series Gigabit switches, the switch latency of Gigabit ports even ranges from 0~45k ns, shorter than the normal 50-125k ns. It indicates that this switch has a much better performance in latency than "standard" situations.

S3900-48T4S Gigabit Switch Latency.png

Conclusion

The FS S3900 series managed stackable Gigabit switches are quality-assured network switches with high throughput, no frame loss, and low latency. The highest throughput is up to 130 Mpps at 100% line rate, the same as the theoretical number. The frame loss rate reaches the best value of 0% and the latency ranges from 0-45k ns on 1G ports and 0-6k ns on 10G ports, which is much lower than the average of the whole market indicating excellent low latency performance.

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