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WS-C3850-24S-S
Cisco WS-C3850-24S-S Catalyst 3850 24-Port Gigabit Fiber Swi...
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WS-C3850-24S-S is a managed Layer 3 fiber switch with 24 Gigabit SFP access ports, a non-PoE configuration, and a modular uplink bay. The rack-mount 1U chassis belongs to the Catalyst 3850 family and includes the IP Base feature set. Its optical access interfaces serve fiber-connected equipment rather than powered copper endpoints. Enterprise access and branch aggregation are the principal roles for this configuration. The discontinued WS-C3850-24S-E is the closest software sibling, supplying IP Services instead of IP Base while retaining the same access-port arrangement. A 24-port Gigabit SFP switch separates the choice of access optics from the choice of uplink hardware; neither the license suffix nor the chassis alone specifies an installed uplink configuration.
WS-C3850-24S-S price for new stock is $2,336.25, a 93.6% saving from the Cisco list price of $36,251.00. WS-C3850-24S-S refurb price is $840.00. WS-C3850-24S-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C3850-24S-S for additional pricing. Browse the full Cisco 3850 Catalyst Switches series or explore all Cisco products.
92 Gbps switching capacity defines the standalone switching envelope, while 68.4 Mpps forwarding applies to the configuration with two 10G and two 1G uplink connections. 109.75W is the maximum published full-traffic consumption with C3850-NM-2-10G installed, providing a configuration-specific power-planning figure rather than the rating of the included PWR-C1-350WAC. WS-C3850-24S-S has 4 GB of DRAM and 2 GB of flash for control-plane operation and image storage. The forwarding hardware accommodates 32000 MAC addresses and a total IPv4 scale of 24000 ARP and learned-route entries. Static, RIPv1, RIPv2, RIPng, EIGRP Stub, and OSPF for routed access are available under IP Base; full OSPF, EIGRP, BGPv4, and IS-ISv4 require IP Services. UADP forwarding hardware supports LACP link aggregation and MSTP loop control. MACsec uses 128-bit AES on this SFP configuration, not the 256-bit capability of the SFP+ and Multigigabit variants. Three C3850-FAN-T1= fan modules provide active cooling.
ORM Systems supplies WS-C3850-24S-S new sealed with up to a 3-year extended warranty or certified refurbished with up to a 1-year warranty; every condition includes 30-day returns, with terms applying. Certified refurbished units are inspected and bench-tested, including rated-speed network-port links, optics bay recognition, firmware verification, and configuration wiping to factory default. Specify the condition and accessory quantities on the PO, and distinguish ORM coverage from Cisco's original-owner Enhanced Limited Lifetime warranty; applicable Cisco service ends April 30, 2027. For enterprise and volume orders, POs are accepted, Net-30 is available for government, RMA includes advance replacement, and regional stock/RMA coverage spans the UK, EU, US, and MEA.
| Key Specs | Key Spec Values |
|---|---|
License Tier | IP Base |
Port Configuration | 24 x 1G SFP / modular uplink bay |
Stacking | StackWise-480 / nine members |
Replaces | WS-C3750X-24S-S; end of sale October 30, 2016 |
Lifecycle Status | End of sale April 30, 2022 |
Replacement PID | C9300-24S |
In a large university campus deploying hundreds of wireless APs and IP cameras, the WS-C3850-24S-S Cisco Catalyst 3850 24 Port GE SFP IP Base switch serves as an aggregation node, offering 24 fiber ports for high-density 1 Gbps uplinks and hardware-accelerated QoS for real-time voice, video and IoT traffic. By leveraging StackWise-480, advanced traffic segmentation and IP Base routing protocols (OSPF, EIGRP stub, IPv6), network administrators achieve deterministic latency, seamless roaming and secure multi-tenant isolation, resulting in 30% higher throughput and simplified fault domains.
In an SMB data center hosting virtualization clusters, the WS-C3850-24S-S acts as a ToR switch, connecting 20+ blade servers via SFP fiber and aggregating east-west traffic over redundant 10 GbE uplinks. Integrated Layer 3 forwarding with IP Base licensing accelerates VM-to-VM routing, reduces north-south congestion by 40% and streamlines network provisioning with Cisco Unified Access Data Plane (UADP) programmability for future VXLAN deployments.
For a distributed retail chain branch, two WS-C3850-24S-S units form a StackWise-480 cluster to deliver resilient fiber connectivity to MPLS and DIA circuits, handling local VLAN routing with IP Base dynamic protocols (EIGRP stub, BFD) and IPv6 readiness. This deployment guarantees sub-second failover, centralized policy enforcement and 99.999% uptime, driving down SLA violations and simplifying remote management under Cisco DNA Center.
When replacing a discontinued WS-C3750X-24S-S, WS-C3850-24S-S follows the Gigabit SFP IP Base migration path. The older model reached end of sale on October 30, 2016. Treat the replacement as a separate chassis purchase, and verify existing optics, cabling, and installation requirements before issuing the PO.
When adding a member to an existing Catalyst 3850 stack, match the operating feature set rather than mixing LAN Base with IP Base or IP Services. Specify STACK-T1-50CM=, STACK-T1-1M=, or STACK-T1-3M= for the required connections, and confirm cable routing and member license alignment before ordering.
When staging hardware for networks that require encrypted administration, SSH and cryptographic SNMPv3 depend on a suitable cryptographic software image. Firmware verification alone does not specify the site's administration requirements. Include the required image, management access configuration, and entitlement checks in the staging requirements before approving the PO.
Direct power for copper endpoints
WS-C3850-24S-S has SFP access ports and cannot supply PoE to phones or access points. A larger power supply does not add powered RJ-45 access connections.
10G on every access connection
The 24 fixed SFP ports operate at 1GbE. C3850-NM-2-10G adds 10G uplink connections, but installing that module does not increase the native access-port speed.
Cisco support beyond April 2027
Cisco support for WS-C3850-24S-S ends April 30, 2027. C9300-24S is the current migration target; specify its license and uplink configuration separately.
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| WS-C3850-24S-S |  WS-C3850-12X48UW-S |  WS-C3850-32XS-S |  WS-C3850-24T-L | |
|---|---|---|---|---|
| Depth | 450 mm | 11.8 inches | 11.02 inches | 450 mm |
| Ethernet Technology | Gigabit Ethernet | 10/100/1000 | 10G | Gigabit Ethernet |
| Flash Memory | 2 GB | 256 MB | 256 MB | 2 GB |
| Form Factor | Rack-Mount 1U | Rack-mount | Rack-mount | Rack-Mount 1U |
| Height | 44.5 mm | 1.73 inches | 1.72 inches | 44.5 mm |
| Manufacturer Part Number | WS-C3850-24S-S | WS-C3850-12X48UW-S | WS-C3850-32XS-S | WS-C3850-24T-L |
| Memory | 4 GB | 512 MB | 4 GB | 4 GB |
| Power Consumption | 109.75W at full traffic with C3850-NM-2-10G | 370 W | 355 W | 84.97W (C3850-NM-2-10G / 100% traffic / 115V AC) |
| Switching Capacity | 92 Gbps | 128 Gbps | 1280 Gbps | 92 Gbps |
| Weight | 7.03 kg | 21 lbs | 25.3 lbs | 7.2 kg |
| Width | 445 mm | 17.5 inches | 17.72 inches | 445 mm |
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Reviewed on the 22 December 2021
GE SFP ports provided flexible connectivity options.
Reviewed on the 4 January 2023
Stable LAN Base performance for enterprise access.
Reviewed on the 21 September 2022
Cisco Catalyst reliability with simple configuration.
Reviewed on the 15 October 2025
Handled daily network load without issues.
Reviewed on the 11 January 2023
Great switch for fiber access scenarios.
WS-C3850-24S-S identifies a Catalyst 3850 switch with 24 Gigabit SFP ports and IP Base. WS-C3850 is the family segment, 24 gives the access-port count, S identifies the SFP configuration, and the final -S selects IP Base. The part number does not specify an installed uplink module.
WS-C3850-24S-S supports a web UI, console CLI, remote CLI over SSH or Telnet, SNMP, and Cisco Prime Infrastructure management. Cisco DNA Center supplies optional centralized management with appropriate licensing. Configure management addressing and credentials during staging, and select a suitable cryptographic image where encrypted administration is required.
WS-C3850-24S-S is discontinued, with end of sale on April 30, 2022, and last Cisco support on April 30, 2027. Software maintenance ended April 30, 2023. New service attachments closed April 30, 2023, and contract renewals closed July 29, 2026; hardware availability does not change these milestones.
ORM Systems offers WS-C3850-24S-S new sealed with up to a 3-year extended warranty or certified refurbished with up to a 1-year warranty. Both conditions have 30-day returns; terms apply. Cisco's original-owner Enhanced Limited Lifetime warranty is separate, and Cisco service ends April 30, 2027.
WS-C3850-24S-S carries permanent IP Base; a licensed upgrade enables IP Services. Cisco DNA Essentials and Cisco DNA Advantage subscriptions start at three years, alongside the Cisco ONE Software for Access Switching offer. Smart Accounts manage add-ons; renew expired subscriptions or deactivate them and reload the switch to retain base capabilities.
WS-C3850-24S-S replaces WS-C3750X-24S-S, the older 24-port Gigabit SFP IP Base model that reached end of sale on October 30, 2016. Both models are discontinued. The forward migration target is C9300-24S, so distinguish an existing-installation replacement purchase from procurement of the current successor and verify accessory compatibility separately.
C3850-NM-4-1G and C3850-NM-2-10G are the permitted uplink modules for WS-C3850-24S-S. C3850-NM-4-1G provides four Gigabit connections; C3850-NM-2-10G supports Gigabit and two 10G connections. The base configuration excludes the module, so identify the required uplink arrangement and transceivers as separate purchase-order requirements rather than assuming fixed uplinks are included.
StackWise-480 joins nine Catalyst 3850 members with 480 Gbps stack bandwidth. STACK-T1-50CM=, STACK-T1-1M=, and STACK-T1-3M= provide 50 cm, 1 m, and 3 m cable choices. Match the operating feature sets: LAN Base cannot mix with IP Base or IP Services in the same software configuration.
Yes, WS-C3850-24S-S supports Layer 3 routing with Static, RIPv1, RIPv2, RIPng, EIGRP Stub, and OSPF for routed access under IP Base. Full OSPF, EIGRP, BGPv4, and IS-ISv4 require IP Services. The 24000-entry IPv4 scale includes ARP and learned routes; that hardware total does not remove software feature restrictions.
No, WS-C3850-24S-S ships with one PWR-C1-350WAC and an available second power-supply bay. A second supply must be ordered for internal redundancy. When operating with one PWR-C1-350WAC, install it in bay 1. StackPower sharing is a separate capability and does not mean two internal supplies ship as standard.
WS-C3850-24S-S provides non-PoE SFP access connections, whereas WS-C3850-24P-S provides 24 copper PoE+ access ports. Both are discontinued configurations. The fiber model suits existing optical Ethernet connections; the copper model addresses powered RJ-45 endpoints in legacy installations. Treat endpoint power and cabling as different requirements, not interchangeable chassis options.
WS-C3850-24S-E includes IP Services, while WS-C3850-24S-S includes IP Base; both discontinued models retain 24 Gigabit SFP access ports. IP Base suits routed access using OSPF for routed access and EIGRP Stub. IP Services addresses full OSPF, EIGRP, BGPv4, or IS-ISv4 requirements within an existing Catalyst 3850 installation.
WS-C3850-24S-S reached end of sale on April 30, 2022, while C9300-24S is its current Catalyst 9300 migration target. Cisco support for the older model ends April 30, 2027. Legacy standardization may call for an existing-model spare; current-generation procurement should specify the successor's license and uplink configuration separately.
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