C1000-48T-4X-L – 48x1G Data Ports – 4x10G SFP+ Uplinks – Catalyst 1000

5.08 reviews9 Questions8 sold this month
List Price: $4,376.08 73% OFF
$1,190.50
Price Alert
In StockShips in as little as 1 business day Brand New
Related models
Cisco SN CheckSN verification before shipment.Verify authenticity3-Year WarrantyExtended, enterprise-gradeWarranty terms14-Day ReturnsStraightforward RMA processReturn policyExpress Shipping2-6 Business Daysvia UPS, FedEx, DHL and more
Trusted & Secure Payments

Shop Expert-Recommended Accessories for the C1000-48T-4X-L

Explore optics, stacking accessories, modules, and power supplies—all verified by our engineers for use with this model.
  • SFP-10G-SR-S

    SFP-10G-SR-S

    10GBASE-SR SFP+ - S-Class - 400m OM4 MMF
    Original price was: $853.95.Current price is: $52.00.
  • SFP-10G-LR-S

    SFP-10G-LR-S

    10GBASE-LR SFP+ - S-Class - 10km SMF
    Original price was: $2,439.88.Current price is: $150.00.
  • GLC-SX-MMD

    GLC-SX-MMD

    1000BASE-SX SFP - MMF 850nm - DOM
    Original price was: $633.46.Current price is: $59.00.
  • GLC-LH-SMD

    GLC-LH-SMD

    1000BASE-LX/LH SFP - 10km SMF / 550m MMF - DOM
    Original price was: $1,260.58.Current price is: $95.80.

Why Layer23-Switch

Stocked, Shipped and Supported by One Team

Founded
Customers
Units shipped
Countries

Inventory You Can See

Cisco stock on hand
Models ready to ship
Warehouse space

Ships in 1 Business Day

In-stock orders leave our Hong Kong or U.S. warehouse within 1 business day after payment, with tracking by email.

DHL FedEx UPS Duties included: US · CA · UK

LSCare Warranty

3years on enterprise equipment

  • Advance replacement for in-stock models
  • New unit for dead-on-arrival
  • 14-day returns on sealed items

Free CCIE Support

Certified engineers help before and after you buy. Reply within 1 business day by email or live chat.

Part number check Configuration Troubleshooting

Verify Before You Pay

100%factory-sealed

Get label and serial photos before shipment, and check every serial number with Cisco.

C1000-48T-4X-L Description

The C1000-48T-4X-L is a Cisco Catalyst 1000 Series fixed managed Gigabit Ethernet Layer 2 access switch for wiring closets that serve many wired endpoints. It has 48 10/100/1000 RJ-45 data ports, four 10G SFP+ uplinks, no PoE budget, 176 Gbps of switching bandwidth, and a fan-cooled chassis. Layer 3 is limited to static routing, so dynamic routing protocols are not part of the feature set.

Quick Specs

Parameter

Specification

Product ID

C1000-48T-4X-L

Product type

Fixed managed Gigabit Ethernet Layer 2 switch

Downlink ports

48 x 10/100/1000 RJ45 data ports

Uplink ports

4 x 10G SFP+ uplinks

PoE budget

Data switch with no PoE budget

Fan design

Fan-cooled 48-port model

Internal power input

Single fixed internal AC power supply

Forwarding bandwidth

88 Gbps for 48-port models with 10G uplinks

Switching capacity

176 Gbps for 48-port models with 10G uplinks

Forwarding rate

130.94 Mpps for 48-port models with 10G uplinks

Dimensions

17.48 x 11.34 x 1.73 in.

Weight

3.95 kg

Product Performance

Dense Copper Access Count
Fixed 10G Uplink Set
48-port 10G-Uplink Forwarding Class

Key Features

Four 10G SFP+ Uplinks

The four uplink slots accept SFP+ and SFP modules, so the closet can reach the aggregation layer at 10G or step down to 1G optics where the far end requires it.

88 Gbps Forwarding Bandwidth

Forwarding bandwidth of 88 Gbps and switching bandwidth of 176 Gbps at 130.94 Mpps keep all 48 Gigabit ports and the uplinks at wire speed.

Data-Only Access Ports

All 48 ports carry data without a PoE budget, and the switch draws 54.73W with no PoE load, so closet power planning covers only the switch itself.

Single IP Management

Up to eight Gigabit Catalyst 1000 switches can be grouped over their SFP/SFP+ uplinks and managed from one IP address. Units with 10G uplinks group only with other 10G units.

Fan-Cooled Chassis

The 48-port chassis uses fans and produces 31.5 dB of typical sound pressure. Air moves from the front and sides to the back, and the direction cannot be reversed.

Fixed Internal AC Supply

A single non-removable supply takes 100 to 240V AC at 50 to 60 Hz, with surge protection. There is no RPS or XPS port for a backup supply.

Application Scenarios

Large Floor Wiring Closet

In a wiring closet serving a full office floor, the switch terminates up to 48 desktop and printer connections and sends their traffic to the distribution layer over its 10G SFP+ uplinks.

School And Library Data Closet

A school or library can place the switch in a building closet to connect classroom and lab computers on its Gigabit copper ports, with a 10G uplink to the building aggregation switch.

Retail Back-Office Access

A retail or branch site can use the switch as its single access switch for back-office computers, point-of-sale terminals and printers, with an SFP+ uplink to the upstream switch.

Product Comparison

Parameter

C1000-48T-4X-L

C1000-48T-4G-L

C1000-48P-4X-L

C1000-24T-4X-L

Gigabit Ethernet / FE ports

48 x 10/100/1000 RJ45 data

48 x 10/100/1000 RJ45 data

48 x 10/100/1000 RJ45 PoE+

24 x 10/100/1000 RJ45 data

PoE power budget

No PoE

No PoE

370W

No PoE

Uplink ports

4 x 10G SFP+

4 x 1G SFP

4 x 10G SFP+

4 x 10G SFP+

Switching capacity

176 Gbps

104 Gbps

176 Gbps

128 Gbps

Forwarding bandwidth

88 Gbps

52 Gbps

88 Gbps

64 Gbps

Fanless

No

No

No

Yes

Layer 3 functionality

Static routing

Static routing

Static routing

Static routing

Single IP management

Up to 8 switches, 10G models only

Up to 8 switches, 1G models only

Up to 8 switches, 10G models only

Up to 8 switches, 10G models only

C1000-48T-4X-L is the data-only 48-port model with four 10G SFP+ uplinks, while C1000-48P-4X-L has the same uplinks and adds a 370W PoE budget, so closets that power phones, cameras or access points from the switch need C1000-48P-4X-L, and C1000-48FP-4X-L raises the budget to 740W. Sites whose aggregation layer still runs 1G SFP modules can order C1000-48T-4G-L, which has four 1G SFP uplinks and a 52 Gbps forwarding class against 88 Gbps. Closets with 24 or fewer copper endpoints can drop to C1000-24T-4X-L, which keeps the 10G uplinks and is fanless, unlike the fan-cooled 48-port chassis. Single IP Management groups only 10G models with other 10G models, so mixed 1G and 10G closets cannot share one management IP.

Ordering Checklist

  • Single IP Management: Up to 8 Gigabit Catalyst 1000 switches can be grouped over the front-panel SFP/SFP+ uplinks, and C1000-48T-4X-L only with other 10G models. A group mixing 1G and 10G models is not supported.
  • Uplink optics: Add SFP+ or SFP modules for the 4 uplink slots, checked in the Cisco Transceiver Module Compatibility Matrix. Optics are not part of the switch order, and the SFP+ slots accept SFP+ and SFP modules.
  • Power cord: Select one AC power cord for the destination country. The cord is not supplied with the switch and must be selected on the order.

Optional Add-ons

Model

Description

CAB-CONSOLE-RJ45

Cisco console cable option with RJ-45 connector for Catalyst 1000 management access

CAB-CONSOLE-USB

Cisco console cable option with USB connector for Catalyst 1000 management access

PWR-CLP

Cisco power clip for power-cable management

RCKMNT-1RU-2KX=

Cisco rackmount kit for Catalyst 1000 24-port and 48-port models

Specifications

Parameter Specification Parameter Specification
Product ID C1000-48T-4X-L Product type Fixed managed Gigabit Ethernet Layer 2 switch
Downlink ports 48 x 10/100/1000 RJ45 data ports Uplink ports 4 x 10G SFP+ uplinks
Default PoE budget Data switch with no PoE budget Fanless No
Fan design Fan-cooled 48-port model Internal power input Single fixed internal AC power supply
Voltage 100 to 240V AC in Frequency 50 to 60 Hz
Input current 0.74A to 1.29A Power rating 0.06 kVA maximum consumption
Consumption without PoE 54.73W Maximum power wattage for BTU/hr 65.20W
Forwarding bandwidth 88 Gbps for 48-port models with 10G uplinks Switching capacity 176 Gbps for 48-port models with 10G uplinks
Forwarding rate 130.94 Mpps for 48-port models with 10G uplinks MAC addresses 16000
Maximum active VLANs 256 VLAN IDs available 4094
Maximum STP instances 64 Maximum SPAN sessions 4
MTU-L3 packet 9198 bytes Jumbo Ethernet frame 10240 bytes
Console port RJ-45 Ethernet console USB-A port 1 USB-A port for storage and Bluetooth console
Cisco IOS image Single universal Cisco IOS Software image Management interfaces CLI and on-box web UI
CPU ARM v7 800 MHz DRAM 512 MB
Flash 256 MB Operating temperature -5 to 50°C at sea level
Operating altitude 10000 ft (3000 m) Operating humidity 5% to 90% at 40°C non-condensing
Acoustic noise 31.5 dB typical sound pressure for C1000-48T-4G-L and C1000-48T-4X-L Dimensions 17.48 x 11.34 x 1.73 in.
Weight 3.95 kg

Quality Certifications

Customer Reviews

Write A Review
5.0
(8 reviews)
5 Stars
8
4 Stars
0
3 Stars
0
2 Stars
0
1 Stars
0
    Andrei Walker
    Posted on 31/03/2026
    Verified Buyer
    5.0

    Asked about a niche detail. They knew the answer immediately.

    Emily Dixon
    Posted on 14/02/2026
    Verified Buyer
    5.0

    Stretched our IT budget further than we thought possible.

    Patricia Schmidt
    Posted on 11/02/2026
    Verified Buyer
    5.0

    After our first order, I’m a believer. They do exactly what they promise.

    Saul Goodman
    Posted on 10/08/2024
    Verified Buyer
    5.0

    It’s all good, man! Legal invoicing, fast delivery. Better call Layer23.

    Gustavo Fring
    Posted on 18/05/2024
    Verified Buyer
    5.0

    I will kill… any latency issues with this hardware. Professional transaction.

Questions & Answers

  • Can C1000-48T-4X-L be stacked or grouped with other switches?

    Yes, through Single IP Management. C1000-48T-4X-L can be grouped under one management IP with up to eight Gigabit Catalyst 1000 switches over the SFP/SFP+ uplinks, and only with other 10G models. A group that mixes 1G and 10G models is not supported.
  • How far does Layer 3 go on C1000-48T-4X-L, and how is it managed?

    Layer 3 on C1000-48T-4X-L stops at static routing, so dynamic routing protocols are not part of its feature set. It runs a single universal Cisco IOS Software image and is managed through the CLI, the on-box web UI or the RJ-45 Ethernet console.
  • How many MAC addresses and active VLANs does C1000-48T-4X-L support?

    C1000-48T-4X-L supports 16,000 unicast MAC addresses and 256 active VLANs chosen from 4094 VLAN IDs. It also provides 64 STP instances and 64 SVIs under the default SDM template. Design VLANs inside the 256 active limit, because only 256 of the 4094 VLAN IDs can be active on the switch at the same time.
  • Which IPv6 route and SVI limits apply on C1000-48T-4X-L?

    C1000-48T-4X-L supports 64 SVIs, 414 IPv6 direct routes and 128 IPv6 indirect routes, with static routing as the only routing method. Route tables are limited to the 414 direct and 128 indirect IPv6 values, so plan prefix counts within those limits.
  • What ambient temperature range can C1000-48T-4X-L run in at 5,000 ft and 10,000 ft?

    C1000-48T-4X-L runs at ambient temperatures up to 45 C at 5,000 ft (1500 m) and up to 40 C at 10,000 ft. The 50 C figure is short-term only per the datasheet footnote, and cold start needs 0 C. Sustained operation must stay inside the 45 C and 40 C steps.
  • How do I convert an SFP+ uplink on C1000-48T-4X-L into a Single IP Management port?

    Enter switch N hstack-port 1 or 2 followed by the uplink name, save with copy running-config startup-config, then reload C1000-48T-4X-L. Uplinks use the names TenGigabitEthernet 1/0/1-4, and at most two ports can serve as management ports. Mixing SFP and SFP+ as management ports is not supported.
  • Can sFlow run on C1000-48T-4X-L when it is a Single IP Management member?

    No. sFlow cannot be used on member switches in a Single IP Management group that includes C1000-48T-4X-L. Single IP Management is a management feature, not a data-plane stack, with one active unit and the other units as members. The link uses front-panel uplinks, downlink gigabit ports are not supported for it, and no Fast Ethernet model can join.
  • Which egress queue count applies to QoS on C1000-48T-4X-L?

    The datasheet states up to 8 egress queues and 2 thresholds per port on C1000-48T-4X-L, with egress bandwidth control, shaping and priority queuing. Plan QoS policies around 8 queues per port, because queue counts above that figure are not available on this model.
  • What can the USB-A port on C1000-48T-4X-L be used for?

    The USB-A port on C1000-48T-4X-L is limited to USB storage and a Bluetooth dongle for CLI and GUI access. The switch has an ARM v7 800 MHz CPU, 256 MB flash and 512 MB DRAM, measured in megabytes, not megabits, plus a 1.5 MB egress buffer.

Warranty

Visit How to Pay page for more information

FREE NETWORK TOOLS

Verify, plan, and comparewith confidence

Use practical tools to check device details, review lifecyclemilestones, and compare hardware before you buy.

DataSheet Downloads

  • C1000-48T-4X-L Datasheet