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Compact SFP switch delivered reliable fiber access performance.
WS-C3850-12S-S
Cisco Catalyst 3850 12 Port GE SFP IP Base
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WS-C3850-12S-S
Cisco Catalyst 3850 12 Port GE SFP IP Base
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WS-C3850-12S-S is a high-performance, stackable enterprise switch that combines robust routing capabilities with a compact design ideal for distributed access and branch office deployments. It features a modular architecture designed for scalability and performance, offering flexible power options via an AC power supply and 12 high-speed SFP ports that enable versatile fiber connectivity.
Built to support Layer 2 and Layer 3 functionalities, the WS-C3850-12S-S is engineered for stacking to simplify network management and expand capacity seamlessly. Its advanced switching capacity, non-PoE design, and optimized interface configurations make it suitable for core access, aggregation, and mission-critical network environments.
WS-C3850-12S-S price is $6,429.00, a 64.2% saving from the Cisco list price of $17,967.00. WS-C3850-12S-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C3850-12S-S for additional pricing. Browse the full Catalyst 3850 Switches series or explore all Cisco products.
In a multi-building enterprise campus, IT architects deploy the WS-C3850-12S-S as the distribution-layer switch to terminate 12 GE SFP fiber uplinks from building-level access switches. This configuration delivers business-critical, non-blocking 10 Gbps aggregation, redundant uplink paths via StackWise-480, and unified policy enforcement with Cisco IOS IP Base. Outcome: 5× improved backbone throughput, sub-millisecond failover, and 99.99 % campus-wide network availability.
In a modular data center, the WS-C3850-12S-S serves as a leaf-node switch for server racks running virtualization and container workloads. Leveraging 12 high-speed GE SFP ports and native IPv4/IPv6 routing in IOS IP Base, IT teams achieve low-latency east-west traffic, automated VXLAN segmentation, and simplified network fabric management with Cisco DNA Center. Outcome: 30 % reduction in application response times, seamless workload mobility, and streamlined network operations.
A distributed retail chain uses the WS-C3850-12S-S at each branch to aggregate multiple fiber-delivered WAN circuits (MPLS, DIA, LTE failover) into a single router-on-a-stick architecture. Integrated Cisco TrustSec and advanced QoS in the IP Base image ensure secure segmentation and prioritized voice/data services. Outcome: 40 % lower WAN costs through link bundling, zero-touch provisioning with Cisco Plug-and-Play, and end-to-end policy compliance across 200+ locations.
To get the detailed certification, please go to the Compliance Center.
 WS-C3850-12S-S |  WS-C3850-48U-S |  WS-C3850-24U-L |  WS-C3850-24XU-S |  WS-C3850-24T-E | |
|---|---|---|---|---|---|
| Depth | 11.8 inches | 12.1 inches | 18.05 inches | 16.9 inches | 16.1 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.73 inches | 1.75 inches | 1.73 inches | 1.73 inches | 1.73 inches |
| IOS | LAN Base | IP Services | LAN Base | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | WS-C3850-12S-S | WS-C3850-48U-S | WS-C3850-24U-L | WS-C3850-24XU-S | WS-C3850-24T-E |
| Media Type Supported | Fiber | Combo | Twisted Pair | Twisted Pair / Fiber | Twisted Pair |
| Memory | 4 GB | 512 MB | 512 MB | 512 MB | 512 MB |
| Number of Downlink Ports | 12 Ports | 48 Ports | 24 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 12–24 Ports | 24–48 Ports | 12–24 Ports | 12–24 Ports | 12–24 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 12 fixed SFP ports | 48 x 10/100/1000 Ethernet ports, 4 x 1G SFP uplink ports | 24 x 10/100/1000 Ethernet ports, 4 x 1G SFP uplink ports | 24 fixed 10/100/1000 Ethernet ports and 4 fixed 10 Gigabit SFP+ uplink ports | N/A |
| Power Consumption | 195W | 335 W | 250 W | 335 W | 155W |
| Power Source | AC Power Supply | Redundant Power Supply / AC Power Supply / N/A | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco Catalyst 3850-12S-S | Cisco Catalyst 3850-48U Switch | Cisco Catalyst 3850-24U-L Switch | Cisco Catalyst 3850-24XU-S | Cisco Catalyst 3850 24 Port 10/100/1000 Ethernet Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | Yes | No | Yes | No |
| SFP Ports | 12 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 160 Gbps | 128 Gbps | 128 Gbps | 128 Gbps | 160 Gbps |
| Switching Capacity with Stacking | 480 Gbps | 480 Gbps | 480 Gbps | 480 Gbps | 480 Gbps |
| Uplink Configuration | 1G | 1G | 1G | 10G | 1G |
| Weight | 12.6 lbs | 14 lbs | 25.5 lbs | 22.5 lbs | 16.5 lbs |
| Width | 17.5 inches | 17.5 inches | 17.32 inches | 17.1 inches | 17.5 inches |
Compact SFP switch delivered reliable fiber access performance.
LAN Base features met our access requirements well.
Stable operation with simple configuration.
Cisco reliability in a small footprint.
Good choice for fiber-based access deployments.
The Cisco WS-C3850-12S-S is a Cisco Catalyst 3850 series switch with 12 Gigabit Ethernet SFP uplink ports and the IP Base feature set for enterprise access deployments.
The WS-C3850-12S-S includes 12 fixed Gigabit Ethernet SFP uplink ports for fiber connectivity to distribution or aggregation layers.
It delivers up to 176 Gbps of switching capacity and a forwarding rate of 77.37 Mpps to support high-bandwidth enterprise applications.
The switch ships with the IP Base feature set, offering Layer 2 switching, static routing, OSPF, EIGRP stub, and limited advanced features.