In this document, you can find information related to the MACSEC feature for EX3400, and the license needed for MACSEC to work.

EX3400 support MACSEC starting on Junos OS 18.1R1.

Media Access Control Security (MACsec) requires the installation of a MACsec feature license. If the MACsec license is not installed, MACsec functionality cannot be activated. You add the MACsec license using the request system license add command. To purchase a feature license for MACsec, contact your Juniper Networks sales representative (https://www.juniper.net/us/en/contact-us/sales-offices). The Juniper sales representative will provide you with a feature license file and a license key. You will be asked to supply the chassis serial number of your switch; you can obtain the serial number by running the 

show chassis hardware command.

The MACsec feature license is an independent feature license. The enhanced feature licenses (EFLs) or advanced feature licenses (AFLs) that must be purchased to enable some features on EX Series or QFX Series switches cannot be purchased to enable MACsec.

For EX3400 Juniper Networks