Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?



  • New extension module (EX4400)—Starting in Junos OS Release 23.1R1, we support a new 1x100GbE QSFP28 extension module (model number: EX4400-EM-1C). The extension module port can act both as a network port or a Virtual Chassis port (VCP). The module can support MACsec AES256 in network port mode. You can also channelize the extension module to support 4x25 GbE and 4x10 GbE. Channelization is not supported on VCP port.

    [See Channelizing Interfaces on EX4400 Switches and Port Speed.]