Catalyst 3850 Series — 24-port UPOE, multigigabit
Covered past the OEM cutoff by an independent maintainer.
Modules and units still circulate on the secondary market.
Carrying production traffic? Set the replacement window now, not mid-outage.
Low-criticality role — document the risk, harden backups, retire on your terms.
No. Cisco's last date of support for WS-C3850-24XU was Oct 2025, per the Cisco end-of-life bulletin — it is past end of service life.
WS-C3850-24XU reached end of sale Oct 2020, per the Cisco end-of-life bulletin.
Oct 2025, according to the Cisco end-of-life bulletin.
After the last date of support, WS-C3850-24XU units can often be kept in production through third-party maintenance providers. Cisco no longer issues software fixes, TAC support, or hardware replacement for it.