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WS-C3850-48XS-S
Cisco WS-C3850-48XS-S Catalyst 3850 48-Port 10 Gigabit Ether...
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WS-C3850-48XS-S provides managed Layer 3 fiber aggregation through 48 fixed 1/10 Gigabit Ethernet SFP+ ports and four fixed 40 Gigabit Ethernet QSFP+ uplinks. The 1U chassis belongs to the Cisco Catalyst 3850 Series and carries the IP Base software image for enterprise access and branch aggregation. Optical connections accommodate downstream switches without delivering endpoint power; copper access and PoE are not features of this configuration. Unlike modular-uplink members of the family, this model has no removable uplink card bay. Front-to-back airflow distinguishes this configuration from the discontinued WS-C3850-48XS-F-S, which uses back-to-front airflow. The 48-port 10G fiber switch consequently requires an installation layout that matches its intake and exhaust direction, rather than treating airflow variants as interchangeable.
WS-C3850-48XS-S price for new stock is $2,289.00, a 95.4% saving from the Cisco list price of $49,935.00. WS-C3850-48XS-S refurb price is $883.58. WS-C3850-48XS-S is in stock and available for free next-day delivery. (terms applied)
Request bulk order quote for WS-C3850-48XS-S for additional pricing. Browse the full Cisco 3850 Catalyst Switches series or explore all Cisco products.
1280 Gbps switching capacity handles aggregate traffic across the fixed interfaces, while 909 Mpps forwarding capacity defines packet-processing throughput. Static routing, RIPv1, RIPv2, RIPng, EIGRP Stub and OSPF for routed access support IP Base deployments; PBR directs selected traffic by policy. Full OSPF, BGPv4, full EIGRP, IS-ISv4 and VRF-Lite require IP Services rather than the shipped image. WS-C3850-48XS-S provides 8 GB DRAM and 8 GB flash for software execution and local storage. The UADP ASIC performs forwarding, and the 32000-entry MAC table accommodates learned Ethernet addresses. A total of 24000 IPv4 entries covers ARP plus learned routes, not learned routes alone. MSTP controls Layer 2 topology, while LACP aggregates compatible Ethernet connections. The Catalyst 3850 software also supports DHCP snooping and dynamic ARP inspection for access-policy enforcement. 288.1W consumption at 100% traffic provides an electrical-planning reference for the ATIS IMIX test configuration, rather than representing the power supply's output rating.
ORM Systems offers WS-C3850-48XS-S in new sealed and certified refurbished condition, with up to a 3-year extended warranty on new units and up to 1 year on certified refurbished units. Certified refurbished units are inspected and bench-tested for power-on, POST, rated-speed links on every port, optics bay recognition, PSU status and fan status; firmware is verified and configuration is wiped to factory default. Specify condition, quantity and required accessories on the purchase order; returns cover 30 days on every condition, with terms applying. Enterprise and volume orders accept POs, government purchases qualify for Net-30, and RMA with advance replacement is available across UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Operating System | Cisco IOS XE |
License Tier | IP Base |
Port Configuration | 48 x 1/10G SFP+, 4 x 40G QSFP+ |
Cooling | 5 FAN-T3-R fans |
Lifecycle Status | End of sale April 30, 2022 |
Replacement PID | C9500-48Y4C |
When consolidating traffic from multiple access switches also requires flow visibility, Flexible NetFlow supports 96000 flow entries on the 48-port SFP+ hardware. An external collector receives exported flow data for analysis and reporting. Size collector capacity and retention separately, and specify the export destination before the purchase order.
When equipment must be configured before network management becomes available, the chassis provides an RJ-45 console connection and a five-pin USB mini-Type B console connection. These are management connections rather than endpoint interfaces. Specify the staging workstation connection and required console accessories before releasing the purchase order.
When replacement equipment will be held as a single-supply spare, the installed supply belongs in bay 1, and the other bay must retain its blank for cooling. An empty bay is not an acceptable operating configuration. Specify the bay population and supplied blank when confirming the order.
StackWise-480 stack expansion
WS-C3850-48XS-S does not support StackWise-480 and has no StackPower connector. The chassis cannot extend an existing physical StackWise-480 stack or participate in its shared-power arrangement.
25G access or 100G uplinks
WS-C3850-48XS-S limits downlinks to 10G and uplinks to 40G. Its current replacement, C9500-48Y4C, provides 48 1/10/25G ports and four 40/100G uplinks; specify compatible optics for the selected speeds.
BGP routing in the included license
WS-C3850-48XS-S includes IP Base, not the IP Services features required for BGPv4, full EIGRP or VRF-Lite. A separate IP Services entitlement is required.
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| WS-C3850-48XS-S |  WS-C3850-24U-L |  WS-C3850-48T-E |  WS-C3850-12XS-E | |
|---|---|---|---|---|
| Depth | 511 mm | 488 mm | 450 mm | 450 mm |
| Ethernet Technology | 10 Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | 10 Gigabit Ethernet |
| Flash Memory | 8 GB | 2 GB | 2 GB | 4 GB |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U |
| Height | 44.5 mm | 44.5 mm | 44.5 mm | 44.5 mm |
| Manufacturer Part Number | WS-C3850-48XS-S | WS-C3850-24U-L | WS-C3850-48T-E | WS-C3850-12XS-E |
| Memory | 8 GB | 4 GB | 4 GB | 4 GB |
| Power Consumption | 288.1W (100% traffic, ATIS IMIX) | 84.8W (excluding PoE load / C3850-NM-2-10G installed) | 127.24W (with C3850-NM-4-10G) | 112.7W at 100% traffic with C3850-NM-4-10G |
| Switching Capacity | 1280 Gbps | 92 Gbps | 176 Gbps | 320 Gbps |
| Weight | 7.45 kg | 7.5 kg | 7.7 kg | 5.8 kg |
| Width | 445 mm | 445 mm | 445 mm | 445 mm |
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New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 90 days, for dependable protection on every order. The exact term is confirmed on your quote, order confirmation and invoice.
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Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
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Reviewed on the 19 March 2025
Handled aggregation traffic efficiently.
Reviewed on the 15 June 2019
Cisco build quality with predictable throughput.
Reviewed on the 11 July 2026
48-port SFP+ switch delivered stable 10G performance.
Reviewed on the 27 February 2024
Reliable IP Base fiber switching.
Reviewed on the 8 February 2019
Excellent choice for fiber-based deployments.
WS-C3850-48XS-S identifies a Catalyst 3850 configuration: WS-C3850 is the family identifier, 48 denotes the SFP+ port count, XS identifies the 10G SFP+ configuration, and the final S denotes IP Base. The complete configuration also includes four fixed 40G QSFP+ ports and a front-to-back PWR-C3-750WAC-R power supply.
Cisco Catalyst 3850 management includes the CLI through console, SSH or Telnet, Cisco Network Assistant, Cisco Prime Infrastructure and SNMP. Local console access supports initial configuration before remote access is established. SSH and cryptographic SNMPv3 require the appropriate cryptographic software image; remote access also requires configured credentials and connectivity.
WS-C3850-48XS-S is discontinued: end of sale was April 30, 2022, and the last date of Cisco support is April 30, 2027. Ordinary software maintenance ended April 30, 2023. Service-contract renewals ended July 29, 2026. Existing support depends on applicable entitlement, and C9500-48Y4C is the replacement.
ORM Systems offers WS-C3850-48XS-S new sealed or certified refurbished, with up to a 3-year extended warranty for new units and up to 1 year for refurbished units. Returns are available for 30 days in every condition; terms apply. Cisco's Enhanced Limited Lifetime Warranty covers eligible original owners, with Cisco support ending April 30, 2027.
WS-C3850-48XS-S includes IP Base, while IP Services provides the advanced-routing upgrade through RTU activation. C3850-48-S-E identifies the paper upgrade license and L-C3850-48-S-E the electronic version. CLI activation does not replace ownership of the corresponding entitlement; confirm the licensed feature set when specifying an upgraded unit.
No, WS-C3850-48XS-S provides optical Ethernet interfaces rather than RJ-45 access ports or PoE output. Its internal power supply powers the chassis, not attached endpoints. The RJ-45 console and Ethernet management connections serve administration and do not convert this fiber configuration into a powered copper access switch.
WS-C3850-48XS-S has four fixed 40G QSFP+ uplinks alongside its 48 SFP+ downlink ports. The chassis does not accept optional uplink network modules. Select compatible optical or cable assemblies for the required connections; a network module used by another Catalyst 3850 configuration cannot add ports to this model.
Yes, WS-C3850-48XS-S supports an optional second internal power supply, but the base configuration ships with one PWR-C3-750WAC-R and a blank in the other bay. A matching PWR-C3-750WAC-R provides an AC redundancy configuration. Maintain the same airflow direction across the installed power supplies and FAN-T3-R fans.
No, WS-C3850-48XS-S does not support StackWise-480 and does not have the StackPower connector used by other Catalyst 3850 configurations. Its fixed fiber ports are Ethernet interfaces, not dedicated StackWise-480 connections. A physical stacking cable or software-tier upgrade does not provide the missing StackWise-480 hardware.
WS-C3850-48XS-S uses front-to-back airflow with PWR-C3-750WAC-R, whereas WS-C3850-48XS-F-S uses back-to-front airflow with PWR-C3-750WAC-F. Both configurations are discontinued. For installed-equipment replacement, the first corresponds to front-panel air intake and the second to rear-panel air intake; match the rack's airflow arrangement rather than substituting between them.
WS-C3850-48XS-S includes IP Base, whereas WS-C3850-48XS-E includes IP Services for advanced routing features such as full OSPF, BGPv4 and full EIGRP. Both models are discontinued. IP Base suits existing routed-access requirements; the IP Services configuration corresponds to installations that already require the additional routing entitlement.
WS-C3850-48XS-S provides 48 1/10G ports and four 40G uplinks, while C9500-48Y4C provides 48 1/10/25G ports and four 40/100G uplinks. C9500-48Y4C is the current replacement for the discontinued model. The older configuration corresponds to existing 10G fiber installations; the replacement accommodates purchases requiring 25G access or 100G aggregation.
Yes, WS-C3850-48XS-S is a rack-mount 1U switch measuring 44.5 mm high, 445 mm wide and 511 mm deep. Its shipped chassis weight is 7.45 kg with fans and one power supply. Confirm usable rack depth and cable clearance, rather than checking rack-unit height alone.
Cisco Catalyst 3850 supports MSTP and PVRST+ for spanning-tree operation, LACP for link aggregation, and DHCP snooping with dynamic ARP inspection for access protection. These functions address different configuration requirements. Select the spanning-tree mode and aggregation settings independently, and establish the required trusted interfaces before enabling inspection policies.
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