Date: May 31st, 2022
Last Modified: Nov 8th, 2023
Software Version: EOS 4.23


The Arista EOS Life Cycle policy defines a 36 month lifecycle for each major release train. The EOS 4.23 software train will reach the 36 month timeline on September 27th 2022. At that time, EOS 4.23 will be considered End of Support for all product families except the 7150 series with no further official software support on this version from Arista. This notice is intended to serve as a reminder of this upcoming event.

Software bug fixes and support only for the 7150 series on the 4.23 release train is extended until December 1st, 2023, whereas TAC only support for 7150 series is extended until Dec, 1st 2024. EOS 4.23 is the last supported release train for the 7150 series and is documented in the end of software support notice for the 7150 series.

Customers running EOS 4.23 should work with their Arista sales team to discuss possible upgrade options. In addition, a general EOS upgrade recommendation can be found at: Software Downloads page.

For more information about Arista’s EOS/EOL policies and/or to obtain an explanation of terms used in this announcement, please refer to the Arista Product Life Cycle Policy. If you require further assistance, or if you have any further questions regarding this notice, please contact the Arista Networks Technical Assistance Center (TAC) by one of the following methods:

Open a Service Request at Arista portal.
By email: This email address is being protected from spambots. You need JavaScript enabled to view it.
A complete list of contact information for TAC assistance is available in Customer Support page.