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.
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A voice VLAN is a VLAN ( virtual local area network) that is specifically allocated for user's voice data streams. It ensures the quality of a voice service due to the priority of voice stream transmission when other services (video or data services) are transmitted simultaneously. FS S3900 series switches, designed for campus network, SMB and home network, also support voice VLAN.
Normally, voice VLAN can identify voice data streams sent from an IP phone in two ways. Take FS S3900 series switches (S3900-24T4S, S3900-24F4S, and S3900-48T4S) as an example. These switches can identify voice data based on both source MAC addresses and source VLAN tags of the received packets. The MAC address-based mode and VLAN-based mode share the same diagram as follow. Once voice streams are identified, they will be prioritized and transmitted with a higher forwarding priority than data or video services.
The FS S3900 series switches offer 1G RJ45 ports, 1G SFP ports and 10G SFP+ ports, all of which support voice VLAN configuration. An IP phone provides an RJ45 network port or WiFi signal, different from an ordinary phone with RJ11 port. Therefore, there are two types of copper connection (with or without copper transceiver) between an IP phone and S3900 series switches to realize voice VLAN, of which option 1 with just a single copper cable is the mostly adopted method.
By configuring voice VLAN, the priority of voice data can be improved. The configuration roadmaps of MAC address-based mode and VLAN-based mode are shown as following.
Note: The FS 3900 switches can not support voice VLAN when the switch port is under access mode.
The voice packets and data packets received by the switch are untagged packets, you need to configure the organizationally unique identifier (OUI) to distinguish voice and data traffic. Use the following steps:
Create a VLAN on the switch and add interfaces to the VLAN to implement Layer 2 interworking.
Configure the OUI to match the source MAC address of the received packet.
Configure the voice VLAN function on the interface.
You need to manually set the corresponding VLAN on the IP Phone. When the switch received tagged packets from IP phone, the configuration includes two main steps:
Create a VLAN on the switch and add interfaces to the VLAN to implement Layer 2 interworking.
Configure VLAN 2 as the voice VLAN and use the VLAN-based voice VLAN (this is the default setting). You do not need to configure the cumbersome OUI, which simplifies the configuration.
The following will demonstrate the detailed voice VLAN configuration process of FS S3900 switches (take S3900-48T4S as an example) via command-line interface (CLI) on both MAC address-based mode and VLAN-based mode.
1. Create a VLAN
S3900-48T4S#configure terminal
S3900-48T4S (config)#vlan database
S3900-48T4S (config-vlan)#vlan 2
2. Configure the VLAN to allow ethernet 1/1 and ethernet 1/2 interface to pass.
S3900-48T4S(config)#interface ethernet 1/1
S3900-48T4S(config-if)#switchport mode hybrid
S3900-48T4S(config-if)#switchport hybrid pvid 2
S3900-48T4S(config-if)#switchport hybrid allowed vlan add 2 untagged
S3900-48T4S(config)#interface ethernet 1/2
S3900-48T4S(config-if)#switchport mode trunk
S3900-48T4S(config-if)#switchport trunk allowed vlan add 2
3. Configure the OUI to match the source MAC address (the MAC address of the IP phone, here is 64-9D-99-1F-02-02) of the received packet.
S3900-48T4S(config)#voice vlan 2
S3900-48T4S(config)#voice vlan mac-address 64-9D-99-00-00-00 mask ff-ff-ff-00-00-00 description voice
4. Configure the voice VLAN function on the interface.
S3900-48T4S(config)#interface ethernet 1/1
S3900-48T4S(config-if)#switchport voice vlan auto
S3900-48T4S(config-if)#switchport voice vlan priority 6
S3900-48T4S(config-if)#switchport voice vlan rule oui
S3900-48T4S(config-if)#switchport voice vlan security
5. Check the configuration results.
S3900-48T4S#show voice vlan status
S3900-1#show voice vlan oui
1. Create a VLAN
S3900-48T4S#configure terminal
S3900-48T4S (config)#vlan database
S3900-48T4S (config-vlan)#vlan 2
2. Configure the VLAN to allow ethernet 1/1 and ethernet 1/2 interface to pass.
S3900-48T4S(config)#interface ethernet 1/1
S3900-48T4S(config-if)#switchport mode hybrid
S3900-48T4S(config-if)#switchport hybrid allowed vlan add 2 tagged
S3900-48T4S(config)#interface ethernet 1/2
S3900-48T4S(config-if)#switchport mode trunk
S3900-48T4S(config-if)#switchport trunk allowed vlan add 2
3. Configure VLAN 2 as a voice VLAN and use a VLAN-based voice VLAN.
S3900-48T4S(config)#voice vlan 2
S3900-48T4S(config)#interface ethernet 1/1
S3900-48T4S(config-if)#switchport voice vlan auto
S3900-48T4S(config-if)#switchport voice vlan priority 6
4. Check the configuration results.
S3900-48T4S#show voice vlan status
Stack Configuration on FS S3900 Series Switches
Traffic Segmentation Configuration on FS S3900 Series Switches
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
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
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
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
After the S3900 switches are stacked, the device has lost the stacking port. What is the reason? By henson on June 19, 2020
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
Why is the calendar set time of the switch restored after restarting? By Emoef on June 18, 2020
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
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
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
Can the stacking and LACP functions of the S3900 be used together? By Helfer on June 15, 2020
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
Hello, why do I fail to upload firmware to the S3900 switch when upgrading the switch? By Dennis Haislip on June 12, 2020
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
Does the S3900 switch support https import certificates? By Shuford on June 11, 2020
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
When configuring QinQ, how many QinQ can be configured for each port? By Jimmina on June 10, 2020
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
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