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WS-C4948E-F-S
Cisco WS-C4948E-F-S Catalyst 4948E-F 48-Port Gigabit Switch,...
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WS-C4948E-F-S combines back-to-front airflow with 48 copper Gigabit Ethernet access ports and four fixed 10G SFP+ uplinks for data center server access. This managed Layer 3 switch includes the IP Base software image and an AC power supply in a rack-mount 1U chassis. Its copper interfaces connect independently powered servers rather than supplying endpoint power. The Catalyst 4948E-F belongs to the Catalyst 4900 family and uses a fixed port configuration rather than interchangeable access or uplink cards. The discontinued WS-C4948E-S provides the opposite, front-to-back airflow direction, making cooling orientation the distinguishing hardware difference between those IP Base configurations. For an installed server rack, the front-exhaust arrangement determines how the chassis faces the hot and cold aisles; port density alone does not establish interchangeability.
WS-C4948E-F-S price for new stock is $6,590.85. WS-C4948E-F-S refurb price is $771.75. WS-C4948E-F-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C4948E-F-S for additional pricing. Browse the full Cisco 4900 Catalyst Switches series or explore all Cisco products.
176 Gbps switching capacity provides the switching fabric for simultaneous server and uplink traffic. 131 Mpps IPv4 forwarding supports packet processing independently of the physical interface-speed specification. 275W maximum power consumption establishes the chassis allowance for electrical and thermal planning; this figure represents switch consumption, not endpoint power delivery. WS-C4948E-F-S has 1 GB of DRAM for its control-plane software, while a separate 17.5 MB shared packet buffer handles traffic queues. Static routing, RIPv1, RIPv2 and EIGRP Stub provide the IP Base routing foundation. OSPF routed access supports 1000 routes with Cisco IOS 15.2(1)E or later, so firmware acceptance must accompany any OSPF requirement. Administration uses the serial console, web access and remote CLI through Telnet or SSH with a cryptographic image; SNMPv3 supports monitoring. LACP provides link aggregation, and VLAN controls separate server traffic. The uplinks support either 1G SFP or 10G SFP+ operation, allowing their link speed to match existing upstream connections.
WS-C4948E-F-S 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 certified refurbished units. Refurbished units are inspected and bench-tested for power-on and POST, every port linking at rated speed, optics bay recognition, PSU status, fan status and a clean boot; firmware is verified and configurations are wiped to factory default. Specify the condition, power hardware, regional power cord, software image and quantity on the PO; returns are available for 30 days on every condition, with terms applying. For enterprise and volume orders, ORM accepts POs, offers Net-30 for government and RMA with advance replacement, and provides regional stock/RMA across UK, EU, US and MEA.
| Key Specs | Key Spec Values |
|---|---|
Operating System | Cisco IOS |
License Tier | IP Base |
Port Configuration | 48 x 1G copper / 4 x 10G SFP+ |
Max Power Draw | 275W |
Replaces | WS-C4948-S (August 1, 2013) / WS-C4948-10GE-S (February 28, 2013) |
Lifecycle Status | Cisco support ended October 31, 2022 |
A global enterprise deploys the WS-C4948E-F-S Catalyst 4948E as a top-of-rack leaf switch in its 500-node hyper-converged private cloud. It terminates 48 1GbE server links and uplinks via four 10GbE SFP+ ports into the spine, leveraging wire-rate forwarding, advanced QoS and sFlow telemetry. Benefit: Delivers sub-50 µs latency, non-blocking east-west connectivity and real-time traffic insights, enabling predictable performance and seamless capacity expansion.
In a 50-floor corporate headquarters, WS-C4948E-F-S switches aggregate 48 PoE+ connections per floor to power 200 IP phones and 80 Wi-Fi 6 access points, with four 10GbE uplinks into the core. Integrated TrustSec segmentation and policy-based QoS prioritize voice/video streams and isolate guest traffic. Benefit: Simplifies cable management, reduces separate power infrastructure costs, and enforces enterprise-grade QoS and security across the campus.
A leading financial services firm installs WS-C4948E-F-S units at its secondary trading site to aggregate multiple carrier Ethernet circuits via four 10GbE SFP+ uplinks. The switch’s low-latency forwarding, granular NetFlow monitoring and hot-swappable fans enable sub-millisecond failover and strict SLA adherence. Benefit: Ensures ultra-low-jitter, high-availability connectivity for mission-critical trading platforms and streamlines disaster-recovery readiness.
When replacing discontinued WS-C4948-S or WS-C4948-10GE-S hardware, WS-C4948E-F-S is a named migration option from those earlier switches. Treat the replacement as a hardware change rather than a configuration-only swap: inventory existing uplink media, cooling orientation and software requirements, then specify the accepted configuration before issuing the purchase order.
For lab staging before an installed-base replacement, Catalyst 4948E-F requires ROMMON 12.2(44r)SG9 at minimum; 12.2(44r)SG10 is the recommended revision. Capture the boot-loader version alongside the approved configuration and software image during acceptance, then specify the required firmware baseline before releasing the purchase order.
For a rollout spanning US and European locations, the AC cord must match the destination rather than merely the switch chassis. CAB-US515-C15-US serves North American 110V connections, while CAB-CEE77-C15-EU serves European connections. Separate destination quantities and identify the required cord PID on each regional purchase order.
Native 10G copper server connections
The 48 copper access ports stop at 1GbE; 10GbE is available through four SFP+ uplinks, not through native 10GBASE-T server access ports.
BGP or full EIGRP routing
IP Base excludes BGP, IS-IS, full EIGRP and VRF-lite. A firmware update alone does not change the software entitlement required for those enhanced routing features.
Active Cisco hardware support coverage
WS-C4948E-F-S reached its last date of support on October 31, 2022. Evaluate the currently orderable Catalyst 9300 series for a supported migration.
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
| WS-C4948E-F-S |  WS-C4948E-E |  WS-C4948-10GE-S |  WS-C4948-S |  WS-X4992 | |
|---|---|---|---|---|---|
| Depth | 493 mm | 492.76 mm | 409.956 mm | 409.956 mm | 12 inches |
| Ethernet Technology | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | Gigabit Ethernet | 10/100/1000 |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-mount |
| Height | 44 mm | 44.45 mm | 44.45 mm | 44.45 mm | 3.5 inches |
| Manufacturer Part Number | WS-C4948E-F-S | WS-C4948E-E | WS-C4948-10GE-S | WS-C4948-S | WS-X4992 |
| Weight | 8.62 kg | 6.35 kg | 7.48 kg | 7.48 kg. | 25 lbs |
| Width | 439 mm | 444.5 mm | 439.166 mm | 439.166 mm | 17.5 inches |
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Reviewed on the 5 October 2018
Stable front airflow model.
Reviewed on the 14 November 2025
Good for hot aisle setups.
Reviewed on the 23 April 2018
No overheating issues.
Reviewed on the 7 March 2025
Solid performance.
Reviewed on the 12 June 2024
Dependable.
WS-C4948E-F-S identifies a Catalyst 4948E configuration with front exhaust, IP Base software and an AC power supply. The WS-C4948E portion names the switch model, F distinguishes back-to-front airflow, and S identifies the IP Base AC-powered configuration. The hardware provides 48 copper Gigabit ports and four SFP+ uplinks.
Catalyst 4948E-F supports web access, a serial-console CLI and remote CLI access through Telnet or SSH with a cryptographic software image. SNMP and SNMPv3 provide monitoring interfaces. Specify the required management access and image during acceptance so the delivered configuration matches the organization's administration requirements.
Yes, WS-C4948E-F-S ended sale on October 31, 2017, and Cisco support ended on October 31, 2022. Cisco maintenance releases ended on October 31, 2018, while vulnerability/security support ended on October 30, 2020. Reseller availability does not reinstate Cisco support or extend those lifecycle milestones.
WS-C4948E-F-S is offered new sealed or certified refurbished, with ORM warranties of up to 3 years extended for new units and up to 1 year for certified refurbished units. Returns are available for 30 days on every condition; terms apply. Cisco platform warranty coverage ended October 31, 2022.
WS-C4948E-F-S includes IP Base, while the Catalyst 4948E-F family supports LAN Base, IP Base and Enterprise Services software images. LAN Base targets Layer 2 operation; IP Base adds limited routing; Enterprise Services adds enhanced routing. Specify the required image and entitlement when ordering rather than assuming all images have equivalent features.
WS-C4948E-F-S is a named replacement for WS-C4948-S and WS-C4948-10GE-S. WS-C4948-S ended sale on August 1, 2013; WS-C4948-10GE-S ended sale on February 28, 2013. These are historical migration relationships, not indications that the replacement remains current: WS-C4948E-F-S itself has also ended sale and support.
WS-C4948E-F-S has four fixed SFP+ uplink cages supporting 10GbE operation, with 1G SFP operation also supported in those same uplinks. The chassis does not use a removable uplink network card. Specify the required uplink speed and compatible media against the existing upstream connection before finalizing the order.
WS-C4948E-F-S includes the front-exhaust PWR-C49E-300AC-F AC power supply; PWR-C49E-300AC-F/2 is the redundant supply option. The included supply is rated at 300W, while maximum chassis consumption is 275W. Confirm whether the order requires one supply or the optional second supply for separate AC feeds.
Yes, WS-C4948E-F-S supports OSPF routed access under IP Base, with a 1000-route limit starting in Cisco IOS 15.2(1)E. That software limit is distinct from the hardware's 57000-route capacity. Full OSPF and other enhanced routing features require Enterprise Services, so confirm both the image entitlement and firmware baseline.
WS-C4948E-F-S includes IP Base, whereas WS-C4948E-F-E includes Enterprise Services. Both configurations are discontinued. The former matches installed-base requirements for limited routing; the latter matches configurations requiring enhanced routing such as BGP, IS-IS or full EIGRP. Software entitlement, rather than a different port configuration, separates these two bundles.
WS-C4948E-F-S includes an AC power supply, whereas WS-C4948E-F is the chassis configuration without a power supply. Both models are discontinued. The powered bundle matches a replacement order needing included power hardware; the bare chassis matches an installed-base repair order with separately specified compatible power hardware.
WS-C4948E-F-S moves cooling air from back to front, whereas WS-C4948E-S moves air from front to back. Both IP Base configurations are discontinued. The front-exhaust model matches an installed rack requiring back-to-front cooling; the other matches the opposite aisle orientation. Confirm airflow direction rather than treating the chassis as interchangeable.
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