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Cisco Meraki

MS420 Series (EOS) Installation Guide

On Aug 1, 2016, Cisco Meraki announced the end-of-sale date for the MS420 series switch will be Oct 31, 2016.  The end-of-support date is Oct 31, 2023.

Read more about our Product End-of-Life (EOL) Policy.


Model number
MS420-24 Layer-3 24-port 10Gbe SFP+ aggregation switch with 1 management interface and hot-swappable power supplies / fans
MS420-48 Layer-3 48-port 10Gbe SFP+ aggregation switch with 1 management interface and hot-swappable power supplies / fans

Package contents

In addition to the MS switch, the following are provided (mounting kit provided with 1U models only):

MS420-24 Series front panel



MS420-48 Series front panel



MS420 Series back panel


Power input The MS comes standard with US power cord. EU/UK/AU power cords may be ordered separately.

Ports and Status Indicators

The MS uses LEDs to inform the user of the device's status. When the device powers on, the main LED will be amber. Additional functions are described below, from left to right.



LED Status


1 Restore N/A Restore button to clear switch IP and local configuration settings
2 Fan Orange One or more of the system fans has malfunctioned or is missing
3 Power (PSU) Orange One of the system PSUs (power supplies) has malfunctioned or is missing



Switch is unable to or has not yet connected to the Meraki cloud



Flashing green

Firmware upgrade in process




Switch is fully operational and connected to the Meraki cloud

    Rainbow Switch is booting, searching for uplink to Meraki Cloud
    Off Switch does not have power


Switch Port LEDs


No client connected



Solid orange

1000 Mbps (1Gbps)



Solid green

10,000 Mbps (10Gbps)

In addition, there is a RESTORE button available on the front panel.

Insert a paper clip if a restore is required.

  • A brief, momentary press: To delete a downloaded configuration and reboot.
  • Press and hold for more than 10 sec: To force the unit into a full factory restore.

Management Port

This port is designed to access the local switch configuration page only. For more information on local configuration, please see Local Configuration.

The management port can not be used as a standard switched port

The MS420 series will ship with all accessories, including fans and two power supplies. Additional accessories, including fans and power supplies, can be purchased separately.

Equipment is to be used only in a restricted access location and installed/operated only by trained service personnel.

Bringing your Stack Online  

When connecting up your MS420 for the first time the ports are set as ethernet. Once they're online you can convert the port to a Stack port by simply selecting the option under the interface configuration as shown below:



It's recommended to bring the MS420's online using an uplink on each switch and configuring the port for Stacking prior to connecting the stack links. This will allow for config sync as well as firmware upgrade. The switches will blink a white status LED during upgrade so it should be visibly obvious that they're upgrade. When the Switch has a steady White Light it's connected and ready to continue so the stacking connections can be added.

Mounting hardware

The mounting hardware includes a rack mount rail kit for standard 1U racks. When installing the device, make sure that there is sufficient space between the rear of the rack and other obstacles to ensure adequate airflow.

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