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Software Installation and Upgrade

  • Base operating system upgrade (ACX Series, PTX Series, and QFX Series)—Starting in Junos OS Evolved Release 22.1R1, Junos OS Evolved uses the Wind River Linux LTS 19 base operating system. This upgrade provides improved security and better performance. Prior to this release, Junos OS Evolved used the Wind River Linux 9 base operating system.

  • OpenSSL version upgrade (ACX Series, PTX Series, and QFX Series)—Starting in Junos OS Evolved 22.1R1, we’ve upgraded the OpenSSL version 1.1.1 to OpenSSL version 3.0.0 with Transport Layer Security (TLS) version 1.3 protocols. The upgraded OpenSSL version 3.0.0 with TLS protocol version 1.3 provides improved security and better performance.

  • Zero touch provisioning on WAN interfaces (QFX5700)—

    Starting in Junos OS Evolved 22.1R1, Zero Touch Provisioning (ZTP) dynamically detects the port speed of WAN interfaces and uses this information to create ZTP client ports with the same speed. ZTP automatically cycles through the WAN ports until it receives Dynamic Host Control Protocol (DHCP) options from the DHCP server. The device uses the DHCP options to perform the bootstrap process.

    [See Zero Touch Provisioning.]