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Name:
WS-C3850-24S-S
- Description:
- Cisco Catalyst 3850 24 Port GE SFP IP Base
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WS-C3850-24S-S Overview
WS-C3850-24S-S is a high-performance, stackable switch built on a robust architecture that delivers both Layer 2 and Layer 3 services for enterprise networks. Designed with scalability in mind, it features flexible power options, efficient cooling, and a compact rack-mount design, making it an ideal choice for businesses needing reliable connectivity without excess footprint.
WS-C3850-24S-S offers 24 SFP ports for fiber connectivity, ensuring high-speed data transfer and seamless integration within existing networks. Its stacking capabilities and enhanced switching performance support growing network demands in environments such as branch offices, campus backbones, and data centers, while its architecture and feature set simplify management and deployment.
What is the price of WS-C3850-24S-S?
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WS-C3850-24S-S Specifications
| Product Type | Switch |
| Power Source | AC Power Supply |
| Layer Supported | Layer 2 / Layer 3 |
| Form Factor | Rack-mount |
| Power Consumption | 140 W |
| Number Of Ethernet Ports | 12–24 Ports |
| Number Of Downlink Ports | 24 Ports |
| Manageable | Managed |
| Ethernet Technology | 10/100/1000 |
| Media Type Supported | Fiber |
| Redundant Power Supply Supported | No |
| Manufacturer Part Number | WS-C3850-24S-S |
| Uplink Configuration | 1G |
| IOS | LAN Base |
| POE Support | Non POE |
| SFP Ports | 24 SFP Ports |
| Memory | 512 MB |
| Rack Units | 1 RU |
| Interface Ports | 10/100/1000 |
| Port/Expansion Slot Details | 24 SFP ports |
| Flash Memory | 256 MB |
| Switching Capacity | 160 Gbps |
| Switching Capacity With Stacking | 480 Gbps |
| Product Name | Cisco Catalyst 3850 24-port SFP Switch |
| Height | 1.75 inches |
| Width | 17.5 inches |
| Depth | 11.2 inches |
| Weight | 24.3 lbs |
WS-C3850-24S-S Use Case
Campus Network Aggregation and QoS Optimization with WS-C3850-24S-S
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.
Data Center Top-of-Rack Converged Server Connectivity
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.
High-Availability Branch WAN Backbone with StackWise Technology
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.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Depth | 18.05 inches | 11.2 inches | 12 inches | 11.8 inches | 11.02 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10G |
| 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 | 1.75 inches | 1.73 inches | 1.72 inches |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| IOS | LAN Base | LAN Base | LAN Base | IP Services | IP Services |
| 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-C3850-24U-L | WS-C3850-24S-S | WS-C3850-24T-L | WS-C3850-12X48UW-S | WS-C3850-32XS-S |
| Media Type Supported | Twisted Pair | Fiber | Twisted Pair | Combo | Fiber |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 4 GB |
| Number of Downlink Ports | 24 Ports | 24 Ports | 24 Ports | 48 Ports | 32 Ports |
| Number of Ethernet Ports | 12–24 Ports | 12–24 Ports | 12–24 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | POE+ | Non POE |
| Port/Expansion Slot Details | 24 x 10/100/1000 Ethernet ports, 4 x 1G SFP uplink ports | 24 SFP ports | 24 x 10/100/1000 Ethernet ports, 4 x 1G SFP uplink ports | N/A | StackWise-480 stacking; 32 x 10G SFP+ fixed ports |
| Power Consumption | 250 W | 140 W | 335W | 370 W | 355 W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | Cisco Catalyst 3850-24U-L Switch | Cisco Catalyst 3850 24-port SFP Switch | Cisco Catalyst 3850-24T-L | Cisco Catalyst 3850-12X48UW-S | Cisco Catalyst 3850-32XS-S |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | No | Yes | Yes |
| SFP Ports | 4 SFP Ports | 24 SFP Ports | 4 SFP Ports | 12 SFP Ports | 32 SFP+ Ports |
| Switching Capacity | 128 Gbps | 160 Gbps | 128 Gbps | 128 Gbps | 1280 Gbps |
| Switching Capacity with Stacking | 480 Gbps | 480 Gbps | 480 Gbps | 480 Gbps | 1280 Gbps |
| Uplink Configuration | 1G | 1G | 1G | 10G | 10G |
| Weight | 25.5 lbs | 24.3 lbs | 21.7 lbs | 21 lbs | 25.3 lbs |
| Width | 17.32 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.72 inches |
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Questions & Answers
Q
What is the Cisco Catalyst 3850 24 Port GE SFP IP Base (WS-C3850-24S-S)?
A
The WS-C3850-24S-S is a stackable Cisco Catalyst 3850 Series switch with 24 Gigabit Ethernet SFP ports, IP Base feature set, advanced security, QoS, and Layer 3 routing support.
Q
How many stacking ports does the WS-C3850-24S-S support?
A
The switch supports up to 9 units per Cisco StackWise-480 ring, delivering a 480 Gbps stack bandwidth for unified management and high availability.
Q
What is the switching capacity and forwarding rate of the 3850‐24S‐S?
A
It delivers up to 176 Gbps of switching capacity and a forwarding rate of 77.4 million packets per second (mpps).
Q
Which SFP modules are compatible with the WS-C3850-24S-S?
A
This model is compatible with Cisco GLC-T, GLC‐SX, GLC‐LH, GLC‐ZX, SFP-10G-SR, and SFP-10G-LR modules for fiber and copper connectivity.
Q
Does the Cisco 3850 24S-S support Power over Ethernet (PoE)?
A
No, the WS-C3850-24S-S is an SFP-only model and does not provide PoE. For PoE support, consider the WS-C3850-24P-S or similar PoE-enabled variants.
Q
What licensing options are available for the Catalyst 3850-24S-S?
A
The switch ships with IP Base licensing for core features. You can upgrade to IP Services for advanced MPLS, IPv6, DMVPN and comprehensive routing capabilities.
Q
Which management interfaces does the WS-C3850-24S-S offer?
A
It provides CLI (SSH/Telnet), Cisco DNA Center, Cisco Prime Infrastructure, SNMP, NETCONF/YANG and an embedded web GUI for policy and device management.
Q
What security features are included in the IP Base image?
A
IP Base includes 802.1X, Dynamic ARP Inspection, IP Source Guard, DHCP snooping, ACLs, MACsec and TrustSec for identity-based access control and threat mitigation.
Q
What are the power and cooling requirements for the Cisco 3850 24S-S?
A
It requires dual redundant field-replaceable 715 W AC power supplies (optional) and supports an operating temperature of 0–45 °C with front-to-back airflow.
Q
How do I stack multiple WS-C3850-24S-S switches?
A
Use Cisco StackWise-480 cables to interconnect the StackWise ports in a ring topology. The switches auto-detect and form a single logical unit for simplified management.
Q
What high-availability features does the Catalyst 3850 24S-S offer?
A
It supports stateful switch over (SSO), nonstop forwarding (NSF), redundant power supplies, and hot-swappable field-replaceable components for minimal downtime.
Q
What quality of service (QoS) capabilities are supported?
A
IP Base includes advanced QoS features such as classification, marking, policing, shaping, low-latency queuing and egress queue scheduling for converged traffic.
Q
What deployment use cases suit the WS-C3850-24S-S?
A
Ideal for campus access, small to medium enterprise distribution layers, and aggregation scenarios requiring fiber uplinks, robust security and scalable stacking.
Q
How can I upgrade the software on the 3850 24S-S?
A
Use Cisco IOS XE Software images via USB, TFTP, FTP, or Cisco DNA Center. Perform a package install or install all commands to upgrade safely in production.
Q
What warranty and support options are available?
A
Cisco offers a limited lifetime hardware warranty with 90-day software updates. Optional SMARTnet contracts include 24×7 support, next-business-day replacement and advanced services.
Q
What performance features are enabled with IP Base vs IP Services?
A
IP Base provides essential Layer 2/3 features, basic routing, QoS and security. IP Services adds full advanced routing protocols (OSPFv3, BGP, EIGRPv6), MPLS, LISP and more.
