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.
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.
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 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 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.
|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.
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:
|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|
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.
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.
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.
Hi Bro, I met the same issue with you. Maybe you can check if this one switch is doing stacking. The FS tech guys provide the following commands to fix it: S3900-24T4S-1(config)#no stacking enable 1 S3900-24T4S-1#reboot By FS on May 14, 2021
Is it possible to use the S3900-24T4S switch to connect 2 routers and have traffic segmentation for those? By Butcher on May 12, 2021
I have tried before, S3900-24T4S supports VLAN, L3 Static Routing，QOS functions, and can have traffic segmentation according to your requirements. By FS on May 13, 2021
Is this switch also manageable via CLI and not only https / Web-based? By Adam Harper on May 12, 2021
S3900-24T4S supports Web, CLI, Telnet, SSH management. By FS on May 14, 2021
What's the idle or average watt consumption? By Robert on May 11, 2021
Max. Power Consumption is 21W, the idle or average watt consumption is around 60% of maximum power consumption. By FS on May 12, 2021
I have both S3900 stacked and working properly. When i power off the 1st switch in the stack, it takes about 1.5 minutes for the second switch to resume passing traffic. Why is that? By Nelida on May 10, 2021
I have also encountered this situation. After testing the S3900 stack, the stack will renegotiate after the standby device is powered off and restarted. During the negotiation process, services will be temporarily interrupted.This is caused by the stack negotiation mechanism and is a normal phenomenon. Hope this helps. By FS on May 10, 2021
Both cat6 or cat6a cable will work. By FS on May 10, 2021
In page 4 of the link of datasheet: https://img-en.fs.com/file/datasheet/s3900-series-switches-datasheet.pdf, you can find 802.1x authentication is supported. By FS on May 10, 2021
check this one: https://img-en.fs.com/file/user_manual/s3900-series-switches-configuration-guide.pdf By FS on May 10, 2021
Can you tell me if the S3900-24T4S supports 4 client systems using its 10Gb SFP+ ports? I see it mentions the two end ports (27 and 28) being used for front plane stacking, but if I wasn't stacking another switch, I was wondering if I could use those two ports for client systems as well. By Chris on May 8, 2021
Yes, the two end ports (27 and 28) can be used for 10G connection. I used these two ports to link with our servers. By FS on May 8, 2021
May I know the MTBF for S3900-24T4S? By Maximo on May 7, 2021
You may download their datasheet and have a look. Most of important parameters are listed, and it shows MTBF (Hours) is more than 100,000. Isn't it vey convenient? By FS on May 7, 2021