PDF(7.8 KB) View with Adobe Reader on a variety of devices
ePub(79.5 KB) View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone
Mobi (Kindle)(60.1 KB) View on Kindle device or Kindle app on multiple devices
Updated:August 18, 2020
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
Some network switches have the ability to be connected to other switches and operate
together as a single unit. These configurations are called "stacks", and are useful for quickly increasing the
capacity of a network.
The objective of this document is to explain the basics of stacking and the benefits it
can bring to a network.
Applicable Devices | Firmware Version
SG350X | 18.104.22.168
SG350XG | 22.214.171.124
SG550X | 126.96.36.199
SF550X | 188.8.131.52
SX550X | 184.108.40.206
CBS350-2X | 3.0.0
CBS350-4X | 3.0.0
A stack is a network solution composed of two or more stackable switches.
Switches that are part of a stack behave as one single device. As a result, a stacking solution shows the
characteristics and functionality of a single switch, while having an increased number of ports.
For a full length explanation of stacking, please view the video below:
Stacking allows users to expand their network capacity without the hassle of managing
Stackable switches can be added or removed from a stack as needed without affecting the
overall performance of the stack. Depending on its topology, a stack can continue to transfer data even if a
link or unit within the stack fails. This makes stacking an effective, flexible, and scalable solution to expand
All Cisco Business stacks have an Active switch, or commander. The Active switch is a
switch in the stack that handles the configuration for the entire stack. When you want to manage your stack, the
Active switch is the device that you connect to in order to make changes. The Active switch also handles other important
stack functions, such as detecting when switches enter or leave the stack, and upgrading outdated switches.
A Standby switch is a switch that will become the new Active switch if the original Active switch goes
offline. In this way, a backup helps maintain the resiliency of the stack.
A Member is a stackable switch that operates as an additional unit
within the stack.
A stack port is a port on the switch that is used to communicate with other
switches in the stack. Depending on the model, a switch can have either preconfigured or user-defined stack