How to Stack FS S3900-24T4S-R Ethernet Switches?

Switch stacking enables the management of multiple switches as a unified entity, thereby enhancing port capacity. It is limited to switches within the same product family and from the same vendor. When switches are stacked, they can be connected to the main switch, allowing changes to be made across the entire stack. Typically, a stackable Gigabit switch is equipped with dedicated uplink ports at the front or a stacking port in the backplane.

Stacking switches provides the convenience of configuring multiple switches from a single console, treating them as a single entity rather than individual stack members. This consolidation is achieved using just one IP address. Switch stacking greatly simplifies network management, making it ideal for deployments with limited space where flexibility is prioritized over availability.

For the specific FS S3900-24T4S-R switch, here is a step-by-step guide for switch stacking.

NOTE: Stacking requires 10G SFP+ port.

• Network topology

• The following is the configuration.

S3900-24T4S-R_A configuration：

S3900-24T4S-R_A >enable
S3900-24T4S-R_A#config
S3900-24T4S-R_A_config#bvss
S3900-24T4S-R_A_config_bvss#bvss enable
S3900-24T4S-R_A_config_bvss#bvss domain-id 1
S3900-24T4S-R_A_config_bvss#bvss member-id 1
S3900-24T4S-R_A_config_bvs#bvss priority 254
S3900-24T4S-R_A_config_bvss#bvss mode normal
S3900-24T4S-R_A_config bvss#bvss interface 1 slot 0 port 27 group 1
S3900-24T4S-R_A_config bvss#bvss interface 2 slot 0 port 28 group 1
S3900-24T4S-R_A_config_bvss#bvss sgnp neighbour-timeout 10
S3900-24T4S-R_A_config_bvss#quit
S3900-24T4S-R_A#write bvss-config
S3900-24T4S-R_A#reboot

S3900-24T4S-R_B configuration：

S3900-24T4S-R_B#config
S3900-24T4S-R_B_config#bvss
S3900-24T4S-R_B_config_bvss#bvss enable
S3900-24T4S-R_B_config_bvss#bvss domain-id 1
S3900-24T4S-R_B_config_bvss#bvss member-id 2
S3900-24T4S-R_B_config_bvss#bvss priority 200
S3900-24T4S-R_B_config_bvss#bvss mode normal
S3900-24T4S-R_B_config bvss#bvss interface 1 slot 0 port 27 group 2
S3900-24T4S-R_B_config bvss#bvss interface 2 slot 0 port 28 group 2
S3900-24T4S-R_B_con fig_bvss#bvss sgnp neighbour-timeout 10
S3900-24T4S-R_B_config_bvss#quit
S3900-24T4S-R_B#write bvss-config
S3900-24T4S-R_B#reboot

• Use the following commands to check the virtualization configuration information,such as show running-config, show interface brief, show bvss current-config, show bvss 

NOTE: After the switch stacking is successfully restarted, the service port defaults to shutdown.

To enable individual ports, you have the option to configure them as UP by using the "no shutdown" command. Alternatively, you can configure a batch of ports as UP by applying the "no shutdown" command to all of them simultaneously. Let's consider an example of batch configuration for ports:

switch_config# interface range gigaEthernet 1/0/1-4
switch_config_if_range# no shutdown