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Configuring a Physical Switch Stack

Table of contents

Overview

This article explains how to connect and configure a physical switch stack. Up to eight Meraki MS switches can be configured in a physical stack to allow for high-speed communication between devices.

Only like-models can be stacked.  For example, MS350-48 and MS350-24X can be stacked, but MS250-48 cannot be stacked with a MS350-48.

Physical stacking is available on MS225, MS250, MS350, and MS410 switches, which include dedicated stacking ports. This article describes physical stacking.

Flexible stacking is available on MS420 and MS425 switches which do not have dedicated stacking ports; any port on these switches can be configured as a stack port. For flexible stacking, visit our Configuring a Flexible Switch Stack article.

Configuration

The following steps explain how to prepare a group of switches for physical stacking, how to stack them together, and how to configure the stack in Dashboard:

  1. Add the switches into a Dashboard network. This can be a new Dashboard network for these switches, or an existing network with other switches. Do not configure the stack in Dashboard yet.
  2. Connect each switch with individual uplinks to bring them both online and ensure they can check in with the Meraki Dashboard.
  3. Download the latest firmware build using the Firmware Upgrade Manager under Organization > Monitor > Firmware Upgrades, if they are not already set for this. This helps ensure each switch is running the same firmware build.
  4. With all switches powered off and links disconnected, connect the switches together via stacking cables in a ring topology (as shown in the following image). To create a full ring, start by connecting switch 1/stack port 1 to switch 2/stack port 2, then switch 2/stack port 1 to switch 3/stack port 2 and so forth, with the bottom switch connecting to the top switch to complete the ring.
  1. Connect one uplink for the entire switch stack. 
  2. Power on all the switches, then wait several minutes for them to download the latest firmware and updates from Dashboard. The switches may reboot during this process.
    • The power LEDs on the front of each switch will blink during this process.
    • Once the switches are done downloading and installing firmware, their power LEDs will stay solid white or green.
  3. Navigate to Switch > Monitor > Switch stacks.
  4. Configure the switch stack in Dashboard. If Dashboard has already detected the correct stack under Detected potential stacks, click Provision this stack to automatically configure the stack.
    Otherwise, to configure the stack manually:
    1. Navigate to Switch > Monitor > Switch stacks.
    2. Click add one / Add a stack:potentialstack.png
    3. Select the checkboxes of the switches you would like to stack, name the stack, and then click Create.:add_one_stack.JPG
  5. The configuration is complete and the stack should be up and running.
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Last modified
14:40, 29 Aug 2017

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