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WS-C3850-48XS-F-E
Cisco WS-C3850-48XS-F-E Catalyst 3850 48-Port 10 Gigabit Eth...
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WS-C3850-48XS-F-E is a back-to-front-airflow, managed Layer 3 switch with 48 1/10G SFP+ access ports, four fixed 40G QSFP+ interfaces, and IP Services in a 1U rack-mount chassis. The Cisco Catalyst 3850 fiber configuration aggregates connections from smaller access switches rather than supplying copper endpoint connections or PoE. Its built-in interfaces do not require a removable uplink card, so uplink selection concerns the intended links rather than an additional network module. The discontinued WS-C3850-48XS-E uses front-to-back airflow instead. For a like-for-like replacement, match the cooling direction as well as the interface configuration; the similar part numbers do not identify interchangeable airflow arrangements.
WS-C3850-48XS-F-E price for new stock is $9,754.50, a 84.9% saving from the Cisco list price of $64,554.00. WS-C3850-48XS-F-E refurb price is $2,782.50. WS-C3850-48XS-F-E is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C3850-48XS-F-E for additional pricing. Browse the full Cisco 3850 Catalyst Switches series or explore all Cisco products.
1280 Gbps switching capacity defines the aggregate switching envelope, while 909 Mpps forwarding provides a separate packet-processing limit for traffic planning. OSPF, EIGRP, BGPv4 and IS-ISv4 enable advanced IPv4 routing under IP Services; OSPFv3 and EIGRPv6 extend routing to IPv6. Multicast routing includes PIM-SM, PIM-DM and SSM, while PBR controls forwarding policy independently of the selected routing protocol. The address resources accommodate 32000 MAC entries and 24000 total IPv4 routes, including ARP and learned routes, so both address populations belong in capacity planning. WS-C3850-48XS-F-E carries 8 GB DRAM and 8 GB flash for system operation and local image storage. 288.1W is the maximum consumption in the published full-traffic test scenario, rather than the rating of its power supply. StackWise-480 and StackPower are unsupported, so neither stack membership nor shared stack power can be included in the deployment design.
WS-C3850-48XS-F-E is available new sealed or certified refurbished, with ORM warranties of up to 3 years extended for new units and up to 1 year for refurbished units; both conditions include 30-day returns, terms apply. Refurbished units are inspected and bench-tested for power-on and POST, rated-speed port links, optics bay recognition, PWR-C3-750WAC-F status and FAN-T3-F= status, with firmware verified and configurations wiped to factory default. Specify condition, quantity and accessories on the PO; Cisco’s separate original-owner Enhanced Limited Lifetime Warranty has a five-year discontinuance limit, and Cisco service ends April 30, 2027. Enterprise and volume orders accept POs, government orders receive 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 Services |
Port Configuration | 48 x 10G SFP+ / 4 x 40G QSFP+ |
Cooling | 5 FAN-T3-F= fans / Back-to-front airflow |
Lifecycle Status | End of sale April 30, 2022 |
Replacement PID | C9500-48Y4C. |
In a hyperscale data center, IT operations deploy the WS-C3850-48XS-F-E Cisco Catalyst 3850 as a top-of-rack switch to aggregate 48 server connections over 10G fiber. Leveraging built-in IP Services (OSPF, BGP, Multicast) and StackWise-480 stacking, this deployment delivers line-rate switching, ultra-low latency, and granular QoS. Outcome: simplified management, seamless scalability to multi-terabit fabrics, and deterministic application performance for mission-critical workloads.
A large university upgrades its network core with the WS-C3850-48XS-F-E to support VoIP, video conferencing, and high-density wireless access across multiple buildings. The switch’s 10G fiber uplinks, advanced IP Services routing, and high-availability features ensure deterministic latency, traffic prioritization, and nonstop connectivity. Outcome: enriched user experience, centralized policy enforcement, and reduced operational complexity.
A regional service provider deploys the WS-C3850-48XS-F-E as a metro-edge switch to deliver business-class 10G Ethernet to enterprise customers. Utilizing IP Services (MPLS VPN, BGP-EVPN) and robust security (MACsec, DHCP snooping), the switch offers carrier-grade reliability and multi-tenant segmentation. Outcome: accelerated service provisioning, optimized bandwidth utilization, and strict SLA adherence with lower TCO.
When a purchase consolidates fiber-connected access switches while retaining flow monitoring, plan the collector and interface inventory together. This model supports 96000 Flexible NetFlow entries. Define the monitored interfaces and traffic classes before ordering, rather than treating chassis selection as the complete monitoring design or assuming every monitoring requirement is already specified.
When replacing a failed unit inside an established fiber network rather than redesigning that network, separate hardware continuity from software maintenance expectations. Software maintenance releases ended April 30, 2023. Confirm the approved image, configuration migration plan and remaining security-support horizon before specifying the replacement unit on the purchase order.
When staging units before shipment to remote sites, prepare console access independently of the production network. The USB console connection uses a five-pin mini-Type B connector; four-pin mini-Type B connectors are incompatible. Specify the console connection and workstation driver requirements in the staging checklist before releasing the purchase order.
StackWise-480 stack membership
WS-C3850-48XS-F-E operates standalone and does not support StackWise-480 or StackPower. An existing Catalyst stack cannot gain another stack member by adding this chassis.
PoE-powered copper endpoint connections
WS-C3850-48XS-F-E provides fiber data interfaces without copper access ports or PoE output. Phones and access points requiring Ethernet power need separate powered access hardware.
Native 25G access connections
WS-C3850-48XS-F-E has 10G SFP+ access interfaces, not 25G downlinks. Its current replacement, C9500-48Y4C, provides 48 25G ports while preserving the access-port density.
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| WS-C3850-48XS-F-E |  WS-C3850-48PW-S |  WS-C3850-24S-S |  WS-C3850-24P-L | |
|---|---|---|---|---|
| Depth | 511 mm | 12.8 inches | 450 mm | 17.2 inches |
| Ethernet Technology | 10 Gigabit Ethernet | 10/100/1000 | Gigabit Ethernet | 10/100/1000 |
| Flash Memory | 8 GB | 256 MB | 2 GB | 256 MB |
| Form Factor | Rack-Mount 1U | Rack-mount | Rack-Mount 1U | Rack-mount |
| Height | 44.5 mm | 1.73 inches | 44.5 mm | 1.75 inches |
| Manufacturer Part Number | WS-C3850-48XS-F-E | WS-C3850-48PW-S | WS-C3850-24S-S | WS-C3850-24P-L |
| Memory | 8 GB | 4 GB | 4 GB | 512 MB |
| Switching Capacity | 1280 Gbps | 128 Gbps | 92 Gbps | 128 Gbps |
| Weight | 7.45 kg. | 25 lbs | 7.03 kg | 26 lbs |
| Width | 445 mm | 17.5 inches | 445 mm | 17.5 inches |
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Reviewed on the 26 July 2025
High-density 10G fiber switch delivered excellent throughput and reliability.
Reviewed on the 28 November 2021
Ideal for core or aggregation layer deployments.
Reviewed on the 21 January 2020
Consistent performance under heavy traffic loads.
Reviewed on the 15 November 2023
Cisco quality with enterprise-grade IP Services.
Reviewed on the 2 June 2026
Rock-solid switching for demanding environments.
WS-C3850-48XS-F-E identifies a Catalyst 3850 standalone fiber switch: WS-C3850 identifies the family, 48XS identifies 48 SFP+ Ethernet ports, F selects back-to-front airflow, and E selects IP Services. The complete configuration also includes four QSFP+ Ethernet interfaces and a 750W AC power supply; F does not indicate PoE on this model.
WS-C3850-48XS-F-E supports Cisco IOS CLI through console, SSH or Telnet, Cisco Network Assistant, Cisco Prime Infrastructure, and Cisco DNA Center with appropriate licensing. SSH requires a cryptographic image. RJ-45 and USB console connections provide local access, while the dedicated Ethernet management interface provides a separate network connection for administration.
Yes, WS-C3850-48XS-F-E reached end of sale on April 30, 2022, and its last date of Cisco support is April 30, 2027. Security support shares that final date. C9500-48Y4C is the replacement PID, so distinguish a legacy replacement purchase from a migration to the current successor.
WS-C3850-48XS-F-E is offered new sealed or certified refurbished, with ORM warranties of up to 3 years extended for new units or up to 1 year for refurbished units. Both receive 30-day returns, terms apply. Cisco’s separate original-owner Enhanced Limited Lifetime Warranty carries a five-year discontinuance limit; Cisco service ends April 30, 2027.
WS-C3850-48XS-F-E includes perpetual IP Services; Cisco DNA Essentials, Cisco DNA Advantage and Cisco DNA Premier are separate subscription paths with a three-year minimum term. The 10G fiber Cisco DNA Advantage path has three- and five-year terms. Smart Accounts manage term entitlements; expired add-ons can be deactivated while retaining base-license operation.
WS-C3850-48XS-F-E includes four fixed 40G QSFP+ Ethernet interfaces alongside its 48 1/10G SFP+ interfaces. The chassis does not accept optional uplink network modules. Specify the intended link speeds and compatible optics when assembling the accessory inventory, rather than adding a removable network card intended for another Catalyst 3850 configuration.
No, WS-C3850-48XS-F-E cannot join a StackWise-480 stack and does not support StackPower. This standalone fiber model differs from stackable members elsewhere in the Catalyst 3850 family. Do not include stacking cables or shared stack power in its installation plan; specify independent switching and chassis power arrangements instead.
WS-C3850-48XS-F-E supports full OSPF, EIGRP, BGPv4 and IS-ISv4 under IP Services, together with OSPFv3 and EIGRPv6 for IPv6. PBR and multicast options including PIM-SM, PIM-DM and SSM are also available. Match the installed feature set to the intended routing configuration rather than assuming IP Base provides the same advanced routing capabilities.
No, WS-C3850-48XS-F-E ships with one PWR-C3-750WAC-F and a blank in the second power supply bay; redundancy requires an additional compatible supply. PWR-C3-750WAC-F= is the matching AC spare. Keep both bays populated by a supply or blank, and match the back-to-front airflow when specifying the second power supply.
The Catalyst 3850 48-port fiber switch occupies 1U and measures 44.5 mm high, 445 mm wide and 511 mm deep. Its published weight is 7.45 kg with one power supply. Check usable cabinet depth, cable clearance and mounting arrangements before adding the chassis to an existing rack purchase.
WS-C3850-48XS-F-E uses back-to-front airflow, while WS-C3850-48XS-E uses front-to-back airflow; both configurations have IP Services. Both models are discontinued. The airflow choice concerns the rack’s cooling arrangement: the F model matches rear-to-front cooling, while the other model matches front-to-rear cooling when maintaining an existing installation.
WS-C3850-48XS-F-E includes IP Services, while WS-C3850-48XS-F-S includes IP Base; both models are discontinued. IP Services provides full advanced routing features that distinguish this purchase from an IP Base configuration. The E model suits an existing advanced-routing requirement, while the S model represents the lower software tier for an established installation.
WS-C3850-48XS-F-E provides 48 10G SFP+ access interfaces, while C9500-48Y4C provides 48 25G access ports and is its current replacement. The Catalyst 3850 model is discontinued. Retaining the older chassis addresses an established legacy installation; the successor addresses a migration requiring the higher native access-port speed.
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