Hoi,
For the EX4300 (non MP models) the last software version (LSV) is 21.4. There are no versions newer than that and will get updated Service Releases (vulnerability and bug fixes) until the switches are End of Software Engineering.
https://support.juniper.net/support/eol/software/junos/#12
Thanks,
Mark
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Hope this helps.
Mark
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Original Message:
Sent: 02-15-2026 20:49
From: Hoi Free
Subject: JunOS for EX-4300-48T
Hi,
From the EX4300 JunOS download page (screen capture attached), version 22.x, 23.x and 24.x are not available, does it mean the only available upgrade for EX4300 from 21.4 to a higher version is 25.x?
Thanks.
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Hoi Free
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