FS S3900 SERIES SWITCHES

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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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Product Guideline : Product Guideline

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FAQ

 Basic Information: Overview; Test Report; EOM, EOFS and EOS Date; Supported Module & Cable

 Configuration Guide: Switch Stack; Voice VLAN; STP Configuration; Interface-based VLAN; IP Subnet-based VLAN; Protocol-based VLAN; Traffic Segmentation; Log in Guide; Port Mirroring; MAC Address-based VLAN; LACP; SNMP; DHCP Snooping

LACP Configuration on FS S3900 Series Switches

Posted on September 27, 2019 By FS.COM

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In networking, the LACP (link aggregation control protocol) technology is used to increase the bandwidth of a single connection and provide redundancy in case one of the links fails. FS S3900 series switches, designed for the campus network, SMB, and home network, also support LACP.

LACP Application on FS S3900 Series Switches

Take LACP application between S3900 series switches and S5800-8TF12S as an example. The combining two links enable a load-balancing mode between S3900-48T4S and S5800-8TF12S switches to provide the network reliability. By applying LACP, the two 10G network links are physically bundled together to form a single 20G data path with its logical bandwidth increased. When one link fails, the LACP will lead the data packet to be transferred in the remaining link.

FS S3900 Switch LACP Application.png

Hardware Connection Guide for LACP of S3900 Series Switches

FS S3900 series switches consist of S3900-24T4S, S3900-24F4S, and S3900-48T4S. Typically, the three switches can support three types of connection to do LACP: copper-to-copper, 1G-1G, and 10G-to-10G. In the following figure, the detailed connections of these three ways are shown.

FS S3900 Switch Hardware Connection Guide.png

Note：

Theoretically, any LACP link group can be formed by links with different transmission media and data rate. But when links with different data rates have to be connected as one aggregation group, please remember to manually limit the higher data rate to the lowest one.
FS S3900-series switches allow for the maximum of 26 aggregation link groups between two switches. As for a single LACP connection group, the S3900-48T4S switch type enables a maximum of 52 ports to be bundled together; while the S3900-24T4S and S3900-24F4S can accommodate no more than 28 ports together. Notably, every LACP link group of S3900 series switches can only have 8 active ports to work at the same time, while the remaining ports can only do back-up. Only if the active port fails down, can the back-up port join the active group to work.
If you need to do LACP for S3900-series switches with other devices, please make sure the other devices also support LACP, otherwise the LACP link can not be set up.

LACP Configuration Roadmap of S3900 Series Switches

The LACP configuration can achieve two types of link aggregation groups (LAGs): dynamic LAGs and static LAGs. The former negotiate settings between the two connected devices, which is suggested to be used between FS S3900 series switches. The static one, also known as manual, is suggested to be applied between S3900 series switches and switches of a different brand or other types of devices like routers.

The following will demonstrate the detailed configuration process of LACP links between S3900-24F4S and S3900-48T4S. The configuration of dynamic and static LACP on S3900 series switches can be achieved via both CLI and web interface methods. And the configuration roadmaps are all the same as the following:

Add member interfaces to the channel-group.
Set the LACP system priority and determine the Actor so that the Partner selects active interfaces based on the Actor interface priority.
Set the upper threshold for the number of active interfaces to improve reliability. (This step is only optionally applied in CLI dynamic configuration commands.)
Set LACP interface priorities and determine active interfaces so that interfaces with higher priorities are selected as active interfaces. (This step is only optionally applied in CLI dynamic configuration commands.)
Create VLANs and add interfaces to the VLANs. (This step is only optionally applied in CLI dynamic configuration commands.)
Verify LACP configuration.

S3900 Series Switch LACP Configuration Via CLI

Dynamic Configuration Commands

1.Add member interfaces to the channel-group. The configuration of S3900-48T4S is similar to that of S3900-24F4S and is not mentioned here.

S3900-24F4S#configure terminal
S3900-24F4S (config)#interface ethernet 1/21
S3900-24F4S (config-if)#channel-group 1 mode auto
S3900-24F4S(config-if)#exit
S3900-24F4S (config)#interface ethernet 1/22
S3900-24F4S (config-if)#channel-group 1 mode auto
S3900-24F4S (config-if)#exit
S3900-24F4S (config)#interface ethernet 1/23
S3900-24F4S (config-if)#channel-group 1 mode auto
S3900-24F4S (config-if)#exit

2. Set the LACP system priority and determine the Actor so that the Partner selects active interfaces based on the Actor interface priority. ( Optional configuration)

S3900-24F4S (config)#interface port-channel 1
S3900-24F4S (config-if)#lacp system-priority 100

3. Set the upper threshold for the number of active interfaces to improve reliability. (Optional configuration)

S3900-24F4S (config)#interface port-channel 1
S3900-24F4S (config-if)#lacp max-member-count 8

4. Set LACP interface priorities and determine active interfaces so that interfaces with higher priorities are selected as active interfaces. (Optional configuration)

S3900-24F4S (config)#interface ethernet 1/21
S3900-24F4S (config-if)#lacp port-priority 100
S3900-24F4S(config-if)#exit
S3900-24F4S(config)#interface ethernet 1/22
S3900-24F4S (config-if)#lacp port-priority 100

5. Create VLANs and add interfaces to the VLANs. (Optional configuration)

S3900-24F4S (config)#vlan database
S3900-24F4S (config-vlan)#vlan 10
S3900-24F4S (config-vlan)#exit
S3900-24F4S (config)#interface port-channel 1
S3900-24F4S (config-if)#switchport mode trunk
S3900-24F4S (config-if)#switchport trunk allowed vlan add 10

6. Verify the configuration. Check information about the channel-group on each switch and check whether link negotiation is successful.

S3900-24F4S#show interfaces status port-channel 1
Group Type: LACP
Port Type: 1000BASE SFP
Link Status: Up
Speed-duplex Status: 1000full
Max Frame Size: 1518 bytes (1522 bytes for tagged frames)
MAC Learning Status: Enabled
Member Ports: Eth1/21, Eth1/22, Eth1/23
Active Member Ports: Eth1/21, Eth1/22,Eth1/23

S3900-48T4S#show interfaces status port-channel 1
Group Type: LACP
Port Type: 1000BASE SFP
Link Status: Up
Speed-duplex Status: 1000full
Max Frame Size: 1518 bytes (1522 bytes for tagged frames)
MAC Learning Status: Enabled
Member Ports: Eth1/21, Eth1/22, Eth1/23
Active Member Ports: Eth1/21, Eth1/22, Eth1/23

S3900-24F4S#show lacp
Port Channel: 1
Max Member Count: 8
Timeout: Long
State: Active
------------------------------------------------------------
Member Port: Eth 1/21
System Priority: 100
Port Priority: 100
------------------------------------------------------------
Member Port: Eth 1/22
System Priority: 100
Port Priority: 100
------------------------------------------------------------
Member Port: Eth 1/23
System Priority: 100
Port Priority: 32768

S3900-48T4S#show lacp
Port Channel: 1
Max Member Count: 8
Timeout: Long
State: Active
------------------------------------------------------------
Member Port: Eth 1/21
System Priority: 32768
Port Priority: 32768
------------------------------------------------------------
Member Port: Eth 1/22
System Priority: 32768
Port Priority: 32768
------------------------------------------------------------
Member Port: Eth 1/23
System Priority: 32768
Port Priority: 32768

Static Configuration Commands

1. Create a port-channel and configure it to work in LACP mode to implement link aggregation. The configuration of S3900-24F4S is similar to that of S3900-48T4S and is not mentioned here.

S3900-48T4S(config)#interface port-channel 1

2. Add member interfaces to the channel-group. The configuration of S3900-48T4S is similar to that of S3900-24F4S and is not mentioned here.

S3900-48T4S #configure terminal
S3900-48T4S (config)#interface ethernet 1/21
S3900-48T4S (config-if)#channel-group 1 mode on
S3900-48T4S (config-if)#exit
S3900-48T4S (config)#interface ethernet 1/22
S3900-48T4S (config-if)#channel-group 1 mode on
S3900-48T4S (config-if)#exit

3. Create VLANs and add interfaces to the VLANs.

S3900-48T4S (config)#vlan database
S3900-48T4S (config-vlan)#vlan 10
S3900-48T4S (config-vlan)#exit
S3900-48T4S (config)#interface port-channel 1
S3900-48T4S (config-if)#switchport mode trunk
S3900-48T4S (config-if)#switchport trunk allowed vlan add 10

4. Verify the configuration. Check information about the channel-group on each switch and check whether link negotiation is successful.

S3900-48T4S #show interfaces status port-channel 1
Group Type: Static
Port Type: 1000BASE-T
Link Status: Up
Speed-duplex Status: 1000full
Max Frame Size: 1518 bytes (1522 bytes for tagged frames)
MAC Learning Status: Enabled
Member Ports: Eth1/21, Eth1/22
Active Member Ports: Eth1/21, Eth1/22

S3900 Series Switch LACP Configuration Via Web Interface

Dynamic Configuration Commands (LACP)

Log into FS switch web management interface to configure LACP. The configuration of S3900-24F4S is similar to that of S3900-48T4S, and is not mentioned here. The detailed steps are listed as below:

1. Switch Management > LACP > Group Member page is used to Apply the LACP group for designated ports.

2. Switch Management > LACP > Group LACP Configuration page is used to set system priority value to indicate a specific LAG during LACP negotiations with other systems. (Range: 0-65535; Default: 32768) (Note: This step is optional.)

Static Configuration Commands (Static Link Aggregation)

Log into FS switch S3900 web management interface to configure static link aggregation. The configuration of S3900-24F4S is similar to that of S3900-48T4S, and is not mentioned here. The detailed steps are listed as below:

1. Switch Management > Static Link Aggregation > Static Group page is used to create and delete static group.

2. Switch Management > Static Link Aggregation > Static Group Member page is used to add and delete static group member.

static link aggregation-2.png

Traffic Segmentation Configuration on FS S3900 Series Switches
Stack Configuration on FS S3900 Series Switches

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

See Full Details

Q:
Hi, is there a way to set a default gateway for the Management Interface - or is the accesss only possible from the same network Segment? By Sebastian.Schubert on October 19, 2020

A:
Hello, the s3900 management port is not isolated from the service interface, so you only need to write a default route. For example: IP route 0.0.0.0 0.0.0.0 10.32.133.254 By FS on October 20, 2020
Q:
My switches are running the most recent release of the software available, but the ssh server implementation is so ancient that it cannot interoperate with even a four-year-old Ubuntu 16.04 client. When can this be fixed? By Garrett.Wollman on August 26, 2020

A:
Hello, our switch supports ssh2.0, please describe in detail "the implementation of sh server is so old". Asymmetric encryption support: RSA1, DSA2 Symmetric encryption support: AES-128, AES-192, AES-256, 3DES, des_cbc, Blowfish HASH support: MD5, SHA1 By FS on August 27, 2020
Q:
After the S3900 switches are stacked, the device has lost the stacking port. What is the reason? By henson on June 19, 2020

A:
After the S3900 switch is successfully stacked and you check the port status through the commands, the two stacking ports of the device will disappear which is a normal situation. It is mainly to prevent misoperation. Please don't worry. By FS on June 19, 2020
Q:
Why is the calendar set time of the switch restored after restarting? By Emoef on June 18, 2020

A:
The time of calendar set is not saved in the configuration file so it will not continue counting after the device is turned off. It is recommended to use the ntp service to synchronize the system time, so that after the switch restarts, you only need to set the next restart time, and don‘t need to set the system time again. By FS on June 18, 2020
Q:
When multiple S3900 switches are stacked, one of them will go down. Will it affect the normal operation of other switches? By Soucie on June 16, 2020

A:
If the master is down, it will re-elect, the election process is the same as the first stack. If it is a slave downtime, there will be no impact. By FS on June 16, 2020
Q:
Can the stacking and LACP functions of the S3900 be used together? By Helfer on June 15, 2020

A:
Yes, after the S3900 switches are stacked, they are logically one device and can implement LACP with other devices. By FS on June 15, 2020
Q:
Hello, why do I fail to upload firmware to the S3900 switch when upgrading the switch? By Dennis Haislip on June 12, 2020

A:
The S3900 series switches only support a maximum of 2 firmwares. Please use the command dir to check whether there are currently two firmwares. If so, you need to delete one and add the new one. If there is only one, please check whether the firmware is damaged. It is recommended to download and install again. By FS on June 12, 2020
Q:
Does the S3900 switch support https import certificates? By Shuford on June 11, 2020

A:
Yes, but there are some requirements for the size of the certificate, the maximum is 5KB and the key is 2KB. By FS on June 11, 2020
Q:
When configuring QinQ, how many QinQ can be configured for each port? By Jimmina on June 10, 2020

A:
The S3900 series are the access layer switches, which have certain restrictions on the hardware, so the maximum entry for QinQ is 24 per port. By FS on June 10, 2020
Q:
I'm currently evaluating your products for our own infrastructure. I think that your S3900-24T4S could be a good solution for our needs. I need 8 switch to popolate our racks and providing access connectivity to our servers. The main issue is that I also need 2 core switch for connecting the access layer each other and uplink to the network perimeter. I've not found in your catalog a switch model that couldd be used for this scope.We have in plan to upgrade the network with more advanced features in the next future so, for now, I'm investigating the market for an affordable solution. I'm evaluating ubiquity products becaue this vendor has a 12 SFP+ ports available in its catalogue. By Popovich on June 9, 2020

A:
Hello, i see you need a solution for your network; our tech and salers can help you design your whole network solution with best quality and price. And we recommend the S3900-24T4S for you to connect to the server. The function of the core switch is more abundant than that of the access layer switch. So as for the core switch, we recommend S5800-8TF12S for the core switch. By FS on June 9, 2020
Q:
Does the QinQ function of S3900 series switches support no vlan tags or add double vlan tags? By Jamange on June 9, 2020

A:
The S3900 series switches don't support no vlan tags or add double vlan tags yet, but the S58 series switches support these. For more information, please feel free to contact sales@fs.com. By FS on June 9, 2020
Q:
The S3900 series switch is configured with the sflow function, and then after saving the configuration and restarting, the sflow function disappears. What is the reason? By Aneili on June 8, 2020

A:
After the switch is configured with sflow function, the configuration file will not display the sflow configuration. When you check the Sflow configuration command, it will show sFlow. By FS on June 8, 2020
Q:
How to enable the IGMP Snooping function of S3900 series switches? By Danny on June 6, 2020

A:
In order to make IGMP snooping effective on the S3900 series switches, you need to use the command: ip igmp snooping querier to make the switch actively send down Query. By FS on June 6, 2020
Q:
When connecting S3900 and S5850 through LACP, I encountered problems such as packet loss. By Costi on June 4, 2020

A:
It may be caused by the inconsistent MTU value configured on the interface. You could try to enable the Jumbo frame. Refer to the following command to open: S3900(config)#jumbo frameS3900(config)#interface ethernet X/X S3900(config-if)#switchport mtu 9216 By FS on June 4, 2020
Q:
Does S3900 series switch support 100M transceiver modules? By Jeffers on June 3, 2020

A:
Yes, the 100M transceiver modules are supported on the Gigabit ports of S3900 series switches, but the version needs to be upgraded to V1.6.9 or higher (including V1.6.9). By FS on June 3, 2020
Q:
One question I had was whether there was GPL code available for the S3900-24T4S? By Purington on June 2, 2020

A:
No, there was not GPL code for S3900-24T4S switch which does not support automated tools and does not have programming capabilities. By FS on June 2, 2020
Q:
Hello, can I change the management IP of the S3900 series switches through the network management console? By J. L. on June 1, 2020

A:
Hello, S3900 series switches don‘t support web interface to change the management port IP. We would recommend the S58 series switches, which could support this function. By FS on June 1, 2020
Q:
What is the command to enable igmp snooping on S3900 series switches? By Lawrence on May 28, 2020

A:
The command example is as follows: Run the following commands in sequence: Switch(config)#ip igmp snooping Switch(config)#ip igmp snooping vlan 1 Switch(config)#ip igmp snooping querier By FS on May 28, 2020
Q:
What´s your cheapest 10G - switch (special offer??!) with fiber connection? Size doesn´t matter, can be very little,can also be used or repaired. By Skemomy on May 25, 2020

A:
Hello,we just sell full-new products, not any old or used. Our cheapest switch with 10G port is S3900-24T4S. For more information, please feel free to contact sales@fs.com. By FS on May 25, 2020
Q:
Does the S3900-24T4S switch have Trunk function? If it supports it, does it support Dot1Q? By Huff on May 22, 2020

A:
Yes, the S3900-24T4S switch has Trunk function and it also supports Dot1Q in the trunk mode. For more information, please feel free to contact sales@fs.com. By FS on November 30, -0001
Q:
Does the S3900-24T4S switch have Trunk function? If it supports it, does it support Dot1Q? By Huff on May 22, 2020

A:
Yes, the S3900-24T4S switch supports dot1q encapsulation in trunk and trunk modes. For more information, please feel free to contact sales@fs.com. By FS on May 22, 2020
Q:
What is the stacking connection between S3900 switches? By Dougsrose on May 20, 2020

A:
The S3900 switch uses the last two 10G ports as stack ports, and the connection method is cross-connect (daisy chain). By FS on May 20, 2020
Q:
Can different models of S3900 series switches be stacked? By Johgan on May 19, 2020

A:
It is not recommended to use different models of S3900 series for stacking because there is a problem with data forwarding. The model and software version of the two switches to be stacked must be consistent. By FS on May 19, 2020
Q:
Can the S3900 series switches modify the IP address of the management port through the web? By Tony Lee on May 14, 2020

A:
Hello, the IP address of the management port cannot be modified through the web currently, but can be modified through CLI commands. By FS on May 14, 2020
Q:
Does all ports of S3900 series switches support viewing DDM information? By Alford on May 8, 2020

A:
The S3900 series switches currently support 10G ports to view DDM information. By FS on May 8, 2020
Q:
We need three switches, the requirements are as follows: 1. 1 fully managed switch and 2 unmanaged. 24 port managed or 16 port managed, the other 2 unmanaged 16 port. 2. Recently I have switch ISP over to spectrum fiber 100MB up/down and I am in process of getting a NSa2650 Sonicwall to replace pfsense.So ISP to sonicwall to managed switch to 2 other managed switches, 48 port netgear and 48 port tp- link.The unmanaged ones will be connecting to brand new 16 all in one desktops, 2 rows, 8 PC's in each row. By Elliott on May 4, 2020

A:
According to the your scenario description, S3900-24T4S and S3900-48T4S are recommended to meet the your application needs, and our switches are configurable management, you can also complete the basic configuration according to the network environment, to achieve equipment unmanage. By FS on May 4, 2020
Q:
Which switches in FS support stacking? By Trevor on May 2, 2020

A:
S3900 series switches, S5900-24S4T2Q switch, S5500-48T8SP switch support stacking. But FS equipment can be stacked only in the same model and version. By FS on May 2, 2020
Q:
If I configure a stack with two S3900 (S1 + S2), is it possible to use LACP with a client for redundancy purpose (e.g. server connected to S1_Port1 and S2_Port1 - so that one link or switch e.g. S1_Port1 or S1 can fail without connection issues)? By Pascal.Bubeck on April 29, 2020

A:
Yes, the LACP can be achieved with a client for redundancy purpose after two S3900-24T4S switches are stacked. The specific operations of LACP can be referred on page 6 of the S3900 Series Configuration Guide and the stacking can be referred on page 134. By FS on April 30, 2020
Q:
About the #72944, I want to know whether its SFP+ port can be used to connect devices or only for uplink? Can it be connected with single computer with 10G fiber interface? By Curtis Reid on April 23, 2020

A:
Hello, the SFP+ interface of the S3900 can not only be connected to upstream devices, but also be connected to computers and other devices. By FS on April 23, 2020
Q:
What's the LACP limit entries of two 72944 stacks? I need more than 8. By Spigner on April 16, 2020

A:
Hello, S3900-24T4S can create up to 26 groups of LACP, and the maximum number of ports in each group is 8. By FS on April 16, 2020
Q:
if I create vlan 2 and vlan 3and create virtual interfaces on each can I route between them？ By Jed on April 13, 2020

A:
Yes, you can. This could work, and you can refer on page 24 and 25 of the S3900 Series Switches Configuration Guide . By FS on April 13, 2020
Q:
Please give me a switch like this: 24-port, managed, car manager according to the current IEC standard Switch, for setting up Industrial Ethernet networks in line, star and ring structure, RST protocol, in 19 inch housing, number and type of LAN ports 2x 10GBase (uplink), 24x 1000Base-T, 2x Power supply 230V, 24/24 ports with FO Connector plugs full duplex. By Leftwich on April 10, 2020

A:
According to your description, we recommend the S3900-24T4S with 24 10/100/1000BASE-T RJ45 ports, and 4 10G SFP+ ports (Uplinks). For detailed parameters, please refer to the S3900 Series Switches Datasheet . By FS on April 10, 2020
Q:
I see the mac-address-table aging time command in our S3900 manual on the website, i want to know whether "0" means to disable aging. By Kirk Handy on April 7, 2020

A:
Yes, the normal aging time of mac-address-table is 300s. But if you set static device to "0", the mac-address-table won't get aged. By FS on April 7, 2020
Q:
Can the switch be configured to block DHCP (udp port 67-68) in and out on only 1 port while allowing all other traffic on that port? By Frederick.Buzzell on March 17, 2020

A:
Yes, the S3900-24T4S switch can meet your need well. When the switch implements the above configuration, DHCP information can be filtered out. At this point, no matter what IP address DHCP obtains, as long as the traffics are obtained through DHCP, they will be completely filtered out. The specific configuration guide can be referred on page 137 of the S3900 Series Switches CLI Reference Guide . By FS on March 18, 2020
Q:
I tried a lot of ways to open the S3900-24T4S Switch Visio Stencils, but I failed. Could you tell me how to open it? By Sager on February 20, 2020

A:
Hello, you could download the Microsoft Office and choose the VisioPro on the “Main Window” of the Office, then you could open this visio stencils. For more information, welcome to contact sales@fs.com By FS on February 20, 2020
Q:
Just wondering if you can confirm that the LACP link aggregation on your switches is fully compatible with HP Procurve switches? I have existing 5412zl and 2510G switches that I'm looking to connect to your S3900-24T4S and possibly S5800 series. Basically looking to add the FS switches to allow 10G fibre connections and aggregate 1G to existing switching. What is the max links that can be aggregated? By Erdman on February 17, 2020

A:
Yes, S3900 series and S5800 series switches are compatible with your HP Procurve switches because LACP is a public standard protocal and our devices support it. The max aggregated links of S3900 series is 8 and S5800 series is 16. By FS on February 18, 2020
Q:
Does this switch support QinQ and vlan translation? By Gepack on February 11, 2020

A:
Yes, S3900-24T4S supports QinQ and vlan translation. And all #S39 and S58 series switches support both QinQ and vlan translation. By FS on February 12, 2020
Q:
Can you forward multiple vlans to another device connected to an sfp port? By Gary.Ogden on January 24, 2020

A:
Yes, our S3900-24T4S switch could support the creation of up to 4096 vlans, which could meet your need for forwarding multiple vlans to another device connected to an SFP port. By FS on January 31, 2020
Q:
Does the sfp+ port support syncing on 2.5G? By Gary.Ogden on January 24, 2020

A:
Our S3900-24T4S switch does not support slowing down the 10G SFP+ port to 2.5G. For any further questions, just feel free to contact sales@fs.com. By FS on January 31, 2020
Q:
Can I combine the 4x10G SFP+ to use 2 ports for stacking and 2 port to hookup servers and nas. By Roy on November 27, 2019

A:
Yes, you can. But it should be noted that only the last two 10G ports of the S3900-24T4S switch can be used for stacking. And you can use the other two 10G ports to connect the server and nas. By FS on November 27, 2019
Q:
set-up a port-mirror on the switch By Ajay.Sharma on November 14, 2019

A:
Hello, S3900 series switches support port-based isolation. The detailed configuration guide, please kindly check the page 415 of the S3900 Series CLI Reference Guide. By FS on November 16, 2019
Q:
Can the S3400-24T4FP switch be stacked with the S3900 series switches? By Jon Baer on October 20, 2019

A:
Hello, the S3400-24T4FP switch can not be stacked with the S3900 series switches. First, the S3400-24T4FP doesn't support stacking. Second, it should be noted that the model and software version of the two switches to be stacked must be same. By FS on October 20, 2019
Q:
Is this switch available with DC power supplies? By Tim.Nowaczyk on October 2, 2019

A:
The S3900-24T4S switch is not available with DC power supplies. It is equipped with 2 built-in AC power supplies by default. If you need the switches with DC power, FS S58 series switches (except the S5850-48T4Q) can provide the DC power modules. By FS on October 3, 2019
Q:
Hello. Does the equipment have Trunk Capabilities? If so does it support Dot1Q. Thank you and have a great day! By ITETINET.ITETINET on September 20, 2019

A:
The S3900-24T4S switch supports Trunk and Dot1Q. You can get the detailed configuration guide in the Web Management Manual and CLI Reference Guide. By FS on September 23, 2019
Q:
I have two computers using a 10Gbe network card (Mellanox) with optics transceiver and of course fiber optic cable. Could I use this switch to connect these computers together to transfer files using SPF+ ports? In other words I’m interested in using this switch as a 4-port 10Gbe switch for the home. Will that work? (I'm confused by the "uplinks" description of it). Thanks By Daren.Jacobs on July 21, 2019

A:
Thanks for your question. The S3900-24T4S switch can be used to connect computers and 10G network card (Mellanox) together by using SFP+ ports to transfer files. It can be used as a 4-port 10G switch for your home. We recommend the module #11552 to connect the terminal or connect the switch. By FS on July 22, 2019
Q:
I need to run a standard Linux user-mode application on this switch. Does the switch allow access to the Linux command line, or is the CLI the only thing that is available? There are other switches by FS that run Linux (ONIE), but those switches are too expensive for my particular application. By Just Curious on July 5, 2019

A:
Thanks for your question. The S3900-24T4S switch can support CLI and web management, but it doesn't allow access to the Linux command line. Only our N-Series Switches can support Linux (ONIE). By FS on July 9, 2019
Q:
Are the SFP+ ports compatible with 10GBASE-T modules, such as FS P/N: SFP-10G-T? By Zan on May 9, 2019

A:
Thanks for your question. The S3900-24T4S switch's SFP+ ports can be compatible with 10GBASE-T modules, such as FS P/N: SFP-10G-T. We recommend #66613. By FS on May 10, 2019
Q:
Does this switch work with a "C60 10G DWDM SFP+ 100GHz 80km Module, Cisco Compatible" transceiver? By Chinmay on April 22, 2019

A:
Hello, the S3900-24T4S switch can work with the Cisco compatible C60 10G DWDM SFP+ transceiver modules. We recommend 45564. Thanks! By FS on April 24, 2019
Q:
Hi team, does this switch support port-isolation (layer 2 split-horizon between ports)? By Albert.Safiullin on April 6, 2019

A:
Hello, S3900 series switches support port-based isolation. The detailed configuration guide, please kindly check the page 415 of the S3900 Series CLI Reference Guide. By FS on April 8, 2019
Q:
Hi, How can I start the User-web-interface (Ethernet) to make quickly and simply configurations? What is the default IP-Adress and the Login-data? I also like the answers to this question as I am about to buy this switch S3900-24T4S Can the 4 SFP+ be used in a common network together with the 24 RJ-45 ports since I need them for my NAS and 2 servers do not need the Uplinks and only need 1 switch By Volcano on April 4, 2019

A:
Hello, the default IP adderess is 192.168.1.1. The login information is--username: admin, password: admin. More detailed configuration guide, please check the web and CLI manual in the “Download” section of the product page. Thanks! By FS on April 5, 2019
Q:
Is #72944 compatible with SFP-GE-L? By Eswaran on March 14, 2019

A:
Yes, the #72944 S3900-24T4S can be compatible with SFP-GE-L transceiver modules. By FS on March 14, 2019
Q:
This is the smallest switch you do that has a 10G sfp uplink, yes? I would love to find a cheaper and smaller 8 port 1GbaseT with a 10G uplink. That’d be amazing with a 10G fiber aggregation, at least for what I am looking for By Derek on March 2, 2019

A:
Yes, S3900-24T4S is the smallest switch with 10G SFP uplink, and 24 10/100/1000BASE-T ports which can meet the demand as you required. So we recommend the S3900-24T4S for you. Thanks! By FS on March 4, 2019
Q:
Is there a POE version of the S3900-24T4S Fanless 24-Port By Erick on January 30, 2019

A:
Glad to know that you are interested in the S3900-24T4s Switch#72944. The S3900-24T4S does not have a POE version. POE requires hardware support. You can try POE switch#73459, the four optical ports of it is 1G SFP. Hope your attention. By FS on January 31, 2019
Q:
Do you have a PoE switch that is able to stack with this one? By Bruno Silva on January 22, 2019

A:
Dear customer, a S3900-24T4S switch can only be stacked with other S3900-24T4S switches. It can not be stacked with other brands or other models. Thanks! By FS on January 23, 2019
Q:
Can we do most of basic configuration trough Webui ? including bandwidth limiting ? By Mathieu on January 19, 2019

A:
Hi, you can do most of basic configuration through Webui including bandwidth limiting, port settings, vlan settings and etc. By FS on January 21, 2019
Q:
Do your switch report PSU status ? are we going to be noticied if a PSU fail ? By mathieu on January 19, 2019

A:
When this switch running SNMP, if the PSU fail, you will receive the Alarm information to be noticed for it. By FS on January 21, 2019
Q:
Does this switch support LACP / port-channels, MSTP and/or PVSTP? By Niels.van Adrichem on January 10, 2019

A:
Thank you for your question. Yes, our S3900-24T4S switch can support LACP and MSTP. By FS on January 11, 2019
Q:
Does this switch have POE? If not do you have a quiet 24port with POE? By Bob on November 28, 2018

A:
Thanks for your questions. Kindly noted that this switch does not support the POE, you can look through the 24 port POE switch from this item #73459. By FS on December 4, 2018
Q:
Are you able to specify MDI/MDIX on this switch or any FS switch? Specification says Auto MDI/MDI-X but I would like to know if you can specify it per port? By quinniedid on November 27, 2018

A:
For the MDI/MDIX function, it is auto negotiating the RJ45 network cables. No matter crossover or straight through network cables you use, they all can be recognized. It is a basic function of switch. Our every port can support MDI/MDI-X, and the rate is 1000Mbps. You just need to use the normal network cables, then the port can work well. By FS on November 28, 2018
Q:
Are 10Gb SFP ports available for normal use, or only for stacking ? By crond on November 14, 2018

A:
Yes, 10G SFP Ports are not only available for normal use, but also can support 6pcs switches in stacking mode at the same time. Thanks! By FS on November 15, 2018
Q:
is it suitable to use with sfp SFP1G-SX-31 transceiver? By IT9-Vincenzo on November 13, 2018

A:
Yes, it is suitable to use with SFP1G-SX-31 transceiver. Pls rest assured. By FS on November 14, 2018
Q:
Is the configuration via SSH or console similar to Cisco? Also, does FS keep the firmware up to date? By dragonforge on October 3, 2018

A:
Thanks for your inquiry, this switch can configure via console and the operation procedure is similar to Cisco, and the firmware update will informed through on FS website. By FS on October 4, 2018
Q:
Hi, How can I start the User-web-interface (Ethernet) to make quickly and simply configurations? What is the default IP-Adress and the Login-data? How can I get the completely User-Manual for this type of switch? With best regards Lorenz By Lorenz on September 24, 2018

A:
Hello, your Account Manager will send the relevant documents to you by email. Thanks By FS on September 25, 2018
Q:
What cable(s) are needed to stack these switches? By tony722 on September 18, 2018

A:
The S3900-24T4S can support stacking. There are 10G fiber port on switch, the stacking cables are 10G DAC. Thanks! By FS on September 21, 2018

Explore

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FS S3900 SERIES SWITCHES

Overview

LACP Configuration on FS S3900 Series Switches

LACP Application on FS S3900 Series Switches

Hardware Connection Guide for LACP of S3900 Series Switches

LACP Configuration Roadmap of S3900 Series Switches

S3900 Series Switch LACP Configuration Via CLI

Dynamic Configuration Commands

1.Add member interfaces to the channel-group. The configuration of S3900-48T4S is similar to that of S3900-24F4S and is not mentioned here.

2. Set the LACP system priority and determine the Actor so that the Partner selects active interfaces based on the Actor interface priority. ( Optional configuration)

3. Set the upper threshold for the number of active interfaces to improve reliability. (Optional configuration)

4. Set LACP interface priorities and determine active interfaces so that interfaces with higher priorities are selected as active interfaces. (Optional configuration)

5. Create VLANs and add interfaces to the VLANs. (Optional configuration)

6. Verify the configuration. Check information about the channel-group on each switch and check whether link negotiation is successful.

Static Configuration Commands

1. Create a port-channel and configure it to work in LACP mode to implement link aggregation. The configuration of S3900-24F4S is similar to that of S3900-48T4S and is not mentioned here.

2. Add member interfaces to the channel-group. The configuration of S3900-48T4S is similar to that of S3900-24F4S and is not mentioned here.

3. Create VLANs and add interfaces to the VLANs.

4. Verify the configuration. Check information about the channel-group on each switch and check whether link negotiation is successful.

S3900 Series Switch LACP Configuration Via Web Interface

Dynamic Configuration Commands (LACP)

1. Switch Management > LACP > Group Member page is used to Apply the LACP group for designated ports.

2. Switch Management > LACP > Group LACP Configuration page is used to set system priority value to indicate a specific LAG during LACP negotiations with other systems. (Range: 0-65535; Default: 32768) (Note: This step is optional.)

Static Configuration Commands (Static Link Aggregation)

1. Switch Management > Static Link Aggregation > Static Group page is used to create and delete static group.

2. Switch Management > Static Link Aggregation > Static Group Member page is used to add and delete static group member.

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