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Cisco Catalyst 3850 Series Replacement — What Cisco Recommends

Cisco support for the Cisco Catalyst 3850 Series has ended for some part numbers (last group runs to Apr 2027) — unsupported units need a plan. Cisco's own end-of-life bulletin names the successor below — quoted from the source, with the successor's live support status where EOSL.ai tracks it.

The Cisco-named replacement

Cisco Catalyst 9300 Series

per-model mapping in the bulletin — named in the Cisco EOL bulletin ↗ as the migration path.

Cisco Catalyst 9300/9300X and 9500

model-dependent — per-model mapping in the bulletin — named in the Cisco EOL bulletin ↗ as the migration path.

Successor support status (tracked by EOSL.ai)

SuccessorLifecycleStatus
Cisco Catalyst 9300 SeriesNo EOL announced — current productActive

Cisco Catalyst 9300/9300X and 9500 is not yet tracked on EOSL.ai — no vendor end-of-life notice has been captured for it, which is typical of current products.

Cisco Catalyst 3850 Series lifecycle dates

SKU groupEnd of saleEOSL / last supportSource
Copper SKUsOct 2020Oct 2025bulletin ↗
Fiber (SFP/SFP+) SKUsApr 2022Apr 2027bulletin ↗

Per-part-number replacement mapping (112)

As listed in the Cisco bulletin's migration table for each part number.

End-of-life partDescriptionBulletin-listed replacement
WS-C3850-24T-LC9300-24T-E
WS-C3850-24T-SC9300-24T-A
WS-C3850-24T-EC9300-24T-A
WS-C3850-48T-LC9300-48T-E
WS-C3850-48T-SC9300-48T-A
WS-C3850-48T-EC9300-48T-A
WS-C3850-24P-LC9300-24P-E
WS-C3850-24P-SC9300-24P-A
WS-C3850-24P-EC9300-24P-A
WS-C3850-48P-LC9300-48P-E
WS-C3850-48P-SC9300-48P-A
WS-C3850-48P-EC9300-48P-A
WS-C3850-48F-LC9300-48P-E
WS-C3850-48F-SC9300-48P-A
WS-C3850-48F-EC9300-48P-A
WS-C3850-24U-LC9300-24U-E
WS-C3850-24U-SC9300-24U-A
WS-C3850-24U-EC9300-24U-A
WS-C3850-48U-LC9300-48U-E
WS-C3850-48U-SC9300-48U-A
WS-C3850-48U-EC9300-48U-A
WS-C3850-12X48U-LC9300-48UXM-E
WS-C3850-12X48U-SC9300-48UXM-A
WS-C3850-12X48U-EC9300-48UXM-A
WS-C3850-24XU-LC9300-24U-E
WS-C3850-24XU-SC9300-24U-A
WS-C3850-24XU-EC9300-24U-A
C1-WSC3850-12X48ULC9300-48UXM-A
C1-WSC3850-24XULC9300-24UX-A
C1-WS3850-24PCisco One Catalyst 3850 24 Port PoEC9300-24P-A
C1-WS3850-24TCisco One Catalyst 3850 24 Port DataC9300-24T-A
C1-WS3850-24UCisco One Catalyst 3850 24 Port UPoEC9300-24U-A
C1-WS3850-48FCisco One Catalyst 3850 48 Port Full PoEC9300-48P-A
C1-WS3850-48PCisco One Catalyst 3850 48 Port PoEC9300-48P-A
C1-WS3850-48TCisco One Catalyst 3850 48 Port DataC9300-48T-A
C1-WS3850-48UCisco One Catalyst 3850 48 Port UPoEC9300-48U-A
CDB-3850-24U-LCisco Digital Building Catalyst 3850 24 Port UPOE BundleCDB-8U
CDB-3850-48U-LCisco Digital Building Catalyst 3850 48 Port UPOE BundleCDB-8U
WS-C3850-12X48U-EJCisco Catalyst 3850 48 Port (12 mGig+36 Gig) UPoE IPS-JapanC9300-48UXM-A
WS-C3850-12X48U-LJCisco Catalyst 3850 48 Port (12 mGig+36 Gig) UPoE LB-JapanC9300-48UXM-E
WS-C3850-12X48U-SJCisco Catalyst 3850 48 Port (12 mGig+36 Gig) UPoE IPB-JapanC9300-48UXM-A
WS-C3850-12X48UW-SCisco Catalyst 3850 48 port(12 mGig) UPOE IPB with 5 AP LicC9300-48UXM-A
WS-C3850-24P-BACisco Catalyst 3850 24 Port PoE IP ServicesC9300-24P-A
WS-C3850-24P-E-BRCisco Catalyst 3850 24 Port PoE IP ServicesC9300-24P-A-BR
WS-C3850-24P-L-BRCisco Catalyst 3850 24 Port PoE LAN BaseC9300-24P-E-BR
WS-C3850-24P-S-BRCisco Catalyst 3850 24 Port PoE IP BaseC9300-24P-A-BR
WS-C3850-24PW-SCisco Catalyst 3850 24 Port PoE with 5 AP license IP BaseC9300-24P-A
WS-C3850-24T-BACisco Catalyst 3850 24 Port Data IP ServicesC9300-24T-A
WS-C3850-24T-E-BRCisco Catalyst 3850 24 Port Data IP ServicesC9300-24T-A-BR
WS-C3850-24T-L-BRCisco Catalyst 3850 24 Port Data LAN BaseC9300-24T-E-BR
WS-C3850-24T-S-BRCisco Catalyst 3850 24 Port Data IP BaseC9300-24T-A-BR
WS-C3850-24UW-SCisco Catalyst 3850 24 Port UPOE with 5 AP licenses IP BaseC9300-24U-A
WS-C3850-24XU-EJCisco Catalyst 3850 24 mGig Port UPoE IP Services-JapanC9300-24U-A
WS-C3850-24XU-LJCisco Catalyst 3850 24 mGig Port UPoE LAN Base-JapanC9300-24U-E
WS-C3850-24XU-SJCisco Catalyst 3850 24 mGig Port UPoE IP Base-JapanC9300-24U-A
WS-C3850-24XUW-SCisco Catalyst 3850 24 mGig Port UPOE IP Base 5 AP LicenseC9300-24U-A
WS-C3850-48F-BACisco Catalyst 3850 48 Port Full PoE IP ServicesC9300-48P-A
WS-C3850-48F-E-BRCisco Catalyst 3850 48 Port Full PoE IP ServicesC9300-48P-A-BR
WS-C3850-48F-L-BRCisco Catalyst 3850 48 Port Full PoE LAN BaseC9300-48P-E-BR
WS-C3850-48F-S-BRCisco Catalyst 3850 48 Port Full PoE IP BaseC9300-48P-A-BR
WS-C3850-48P-E-BRCisco Catalyst 3850 48 Port PoE IP ServicesC9300-48P-A-BR
WS-C3850-48P-L-BRCisco Catalyst 3850 48 Port PoE LAN BaseC9300-48P-E-BR
WS-C3850-48P-S-BRCisco Catalyst 3850 48 Port PoE IP BaseC9300-48P-A-BR
WS-C3850-48PW-SCisco Catalyst 3850 48 Port Full PoE w/ 5 AP license IP BaseC9300-48P-A
WS-C3850-48PW-SZCisco Catalyst 3850 48 Port Full PoE w/ 5 AP license IP BaseC9300-48P-A
WS-C3850-48T-BACisco Catalyst 3850 48 Port Data IP ServicesC9300-48T-A
WS-C3850-48T-E-BRCisco Catalyst 3850 48 Port Data IP ServicesC9300-48T-A-BR
WS-C3850-48T-L-BRCisco Catalyst 3850 48 Port Data LAN BaseC9300-48T-E-BR
WS-C3850-48T-S-BRCisco Catalyst 3850 48 Port Data IP BaseC9300-48T-A-BR
WS-C3850-48UW-SCisco Catalyst 3850 48 Port UPOE with 5 AP licenses IP BaseC9300-48U-A
WS-C3850-48W-SCisco Catalyst 3850 48 Port PoE with 5 AP licenses IP BaseC9300-48P-A
WS-C3850R-24T-ECisco Catalyst 3850 24 Port Data IP Services, RussiaC9300-24T-A
WS-C3850R-24T-LCisco Catalyst 3850 24 Port Data LAN Base, RussiaC9300-24T-E
WS-C3850R-24T-SCisco Catalyst 3850 24 Port Data IP Base, RussiaC9300-24T-A
WS-C3850R-48P-ECisco Catalyst 3850 48 Port PoE IP Service, RussiaC9300-48P-A
WS-C3850R-48P-LCisco Catalyst 3850 48 Port PoE LAN Base, RussiaC9300-48P-E
WS-C3850R-48P-SCisco Catalyst 3850 48 Port PoE IP Base, RussiaC9300-48P-A
WS-C3850R-48T-ECisco Catalyst 3850 48 Port Data IP Services, mfg in RussiaC9300-48T-A
WS-C3850R-48T-LCisco Catalyst 3850 48 Port Data LAN Base, RussiaC9300-48T-E
WS-C3850R-48T-SCisco Catalyst 3850 48 Port Data IP Base, RussiaC9300-48T-A
WS-C3850R-48U-ECisco Catalyst 3850 48 Port UPOE IP Service, mfg in RussiaC9300-48U-A
WS-C3850R-48U-LCisco Catalyst 3850 48 Port UPOE LAN Base, RussiaC9300-48U-E
WS-C3850R-48U-SCisco Catalyst 3850 48 Port UPOE IP Base, RussiaC9300-48U-A
WS-C3850-12S-EC9300-24S
WS-C3850-12S-SC9300-24S
WS-C3850-12XS-EC9300X-12Y
WS-C3850-12XS-SC9300X-12Y
WS-C3850-16XS-EC9300X-12Y
WS-C3850-16XS-SC9300X-12Y
WS-C3850-24S-EC9300-24S
WS-C3850-24S-SC9300-24S
WS-C3850-24XS-EC9300X-24Y
WS-C3850-24XS-SC9300X-24Y
WS-C3850-32XS-EC9300X-24Y
WS-C3850-32XS-SC9300X-24Y
WS-C3850-48XS-EC9500-48Y4C
WS-C3850-48XS-F-EC9500-48Y4C
WS-C3850-48XS-F-SC9500-48Y4C
WS-C3850-48XS-SC9500-48Y4C
C1-WS3850-12XS-SC9300X-12Y
C1-WSC3850-24XS-SC9300X-24Y
C1-WSC3850-48XS-FSC9500-48Y4C
C1-WSC3850-48XS-SC9500-48Y4C
C3850-24XS-ECatalyst 3850 24 Port 10G Fiber Switch IP Services TAAC9300X-24Y
C3850-32XS-ECisco Catalyst 3850 32 Port 10G Fiber Switch IP Services TAAC9300X-24Y
C3850-48XS-F-SCatalyst 3850 48 Port 10G Fiber Switch IP Base TAAC9500-48Y4C
C3850-48XS-SCatalyst 3850 48 Port 10G Fiber Switch IP Base TAAC9500-48Y4C
C3850-NM-2-10GCisco Catalyst 3850 2 x 10GE Network ModuleC9300-NM-8X
C3850-NM-2-40GCisco Catalyst 3850 2 x 40GE Network ModuleC9300X-NM-2C
C3850-NM-4-10GCisco Catalyst 3850 4 x 10GE Network ModuleC9300X-NM-8Y
C3850-NM-4-1GCisco Catalyst 3850 4 x 1GE Network ModuleC9300-NM-4G
C3850-NM-8-10GCisco Catalyst 3850 8 x 10GE Network ModuleC9300X-NM-8Y
Replacement guidance on this page is quoted from Cisco's official end-of-life bulletin (linked above). EOSL.ai sells no hardware and lists no paid placements — this is the manufacturer's stated path, and third-party maintenance past the cutoff is also an option.

Migration questions

What is the replacement for the Cisco Catalyst 3850 Series?

Cisco's end-of-life bulletin names Cisco Catalyst 9300 Series and Cisco Catalyst 9300/9300X and 9500 as the recommended migration path for the Cisco Catalyst 3850 Series. The exact wording and any per-part-number mapping are in the linked bulletin.

Is the Cisco Catalyst 3850 Series end of life?

Cisco support for the Cisco Catalyst 3850 Series has ended for some part numbers (last group runs to Apr 2027) — unsupported units need a plan. Full lifecycle dates by part number: https://eosl.ai/system/cisco-catalyst-3850/.

Is there a per-part-number replacement mapping for the 3850 Series?

Yes — the bulletin maps replacements at the part-number level for 112 SKUs (for example WS-C3850-24T-L → C9300-24T-E). The full table is on this page.

Do I have to buy the Cisco-recommended replacement?

No. The bulletin's named successor is Cisco's suggested path, not an obligation. Teams also keep 3850 Series units running under third-party maintenance after the support cutoff, migrate to a different vendor, or run low-criticality units to failure with the risk documented. See the support-options guide for the trade-offs.

Check your 3850 Series part numbers →Migrate vs. maintain →

Other Cisco Catalyst migration guides

Related Cisco Catalyst 4500-E Series replacementCisco Catalyst 6500-E Series replacementCisco Catalyst 3650 Series replacementCisco Catalyst 2960-X Series replacementCisco Catalyst 3750G- Series replacementCisco Catalyst 6500 Series replacementCisco Catalyst 4500 Series replacementCisco Catalyst 6513 Series replacement
Related Cisco Catalyst 3850 Series EOL datesAll replacementsSupport optionsEnding soon