C1000-24T-4G-L – 24x1G Data Ports – 4x1G SFP Uplinks – Fanless Catalyst 1000

Brand: Cisco Category: Catalyst 1000 Switches Model: C1000-24T-4G-L
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C1000-24T-4G-L Description

The C1000-24T-4G-L is a Cisco Catalyst 1000 Series fixed managed Layer 2 access switch for small offices and branches that connect data-only endpoints. The switch has 24 10/100/1000 RJ45 data ports, four 1G SFP uplinks, 56 Gbps of switching bandwidth and a fanless chassis only 9.45 inches deep. The switch supplies no PoE and supports static routing only.

Quick Specs

Parameter

Specification

Product ID

C1000-24T-4G-L

Product type

Fixed managed Gigabit Ethernet Layer 2 switch

Downlink ports

24 x 10/100/1000 RJ45 data ports

Uplink ports

4 x 1G SFP uplinks

PoE budget

Data switch with no PoE budget

Fan design

Fanless 24-port model

Internal power input

Single fixed internal AC power supply

Forwarding bandwidth

28 Gbps for 24-port models with 1G uplinks

Switching capacity

56 Gbps for 24-port models with 1G uplinks

Forwarding rate

41.67 Mpps for 24-port models with 1G uplinks

Dimensions

17.48 x 9.45 x 1.73 in.

Weight

2.63 kg

Product Performance

Gigabit Copper Access Density
1G-Uplink Forwarding Bandwidth
24-Port Forwarding Rate

Key Features

Data-Only 24-Port Access

All 24 10/100/1000 RJ45 ports carry data only. Phones, cameras and access points need their power from another source.

Four 1G SFP Uplinks

Four SFP slots take Cisco-supported 1G modules for fiber or copper runs to the core. The slots accept SFP modules only, not SFP+.

Fanless 9.45-Inch Chassis

The chassis is 17.48 inches wide, 9.45 inches deep and has no fan, which suits shallow cabinets and quiet rooms.

56 Gbps Switching Bandwidth

Switching bandwidth is 56 Gbps with a forwarding rate of 41.67 Mpps, which covers 24 gigabit ports and four 1G uplinks at line rate.

Static Routing On A Layer 2 Platform

The switch routes between VLANs with static routes, with room for 542 direct and 256 indirect IPv4 unicast routes. Dynamic routing protocols are not supported.

Single IP Management

Up to eight Catalyst 1000 Gigabit switches can be joined through their SFP uplinks and managed from one IP address. Only 1G models can be grouped with other 1G models.

Application Scenarios

Office Desktop Access

In a small office, the switch connects up to 24 desktop PCs and printers and carries their traffic to the core over 1G SFP uplinks.

Library And Lab Computers

A library or school lab can run its fanless switch in a shallow cabinet, linking public workstations without fan noise.

Branch Network Cabinet

In a branch network cabinet, the switch joins workstations and network printers and sends their traffic to the branch router over fiber through one of its four SFP uplinks.

Product Comparison

Parameter

C1000-24T-4G-L

C1000-24P-4G-L

C1000-24T-4X-L

C1000-48T-4G-L

Gigabit Ethernet / FE ports

24 10/100/1000 RJ45 Data

24 10/100/1000 RJ45 PoE+

24 10/100/1000 RJ45 Data

48 10/100/1000 RJ45 Data

PoE power budget

0W (no PoE)

195W

0W (no PoE)

0W (no PoE)

Uplink ports

4 SFP (1G)

4 SFP (1G)

4 SFP+ (10G)

4 SFP (1G)

Switching capacity

56 Gbps

56 Gbps

128 Gbps

104 Gbps

Forwarding rate

41.67 Mpps

41.67 Mpps

95.23 Mpps

77.38 Mpps

Fanless

Yes

Yes

Yes

No

Layer 3 functionality

Static routing

Static routing

Static routing

Static routing

Single IP management

Up to 8 switches

Up to 8 switches

Up to 8 switches

Up to 8 switches

C1000-24T-4G-L and C1000-24T-4X-L both have 24 Gigabit RJ45 data ports and no PoE, but C1000-24T-4G-L has 4 x 1G SFP uplinks at 41.67 Mpps while C1000-24T-4X-L has 4 x 10G SFP+ uplinks at 95.23 Mpps, so 10G aggregation links need C1000-24T-4X-L. Endpoints that draw power from the switch need C1000-24P-4G-L, which keeps the 1G uplinks and adds PoE+ with a 195W budget that cannot be increased later. Closets that need 48 copper ports on 1G uplinks move to C1000-48T-4G-L, which is fan-cooled rather than fanless. C1000-24T-4G-L remains the fanless data-only choice for 24 ports.

Ordering Checklist

  • Power cord: Select one AC power cord for the destination country; the cord is not included and must be selected on the order.
  • Uplink optics: Add Cisco-supported SFP modules, sold separately, for the 4 x 1G SFP slots, which accept only SFP. With GLC-BX-U or GLC-BX-D the limit is 45C up to 5,000 ft and 40C up to 10,000 ft.
  • Console cable and cord clip: Add CAB-CONSOLE-RJ45 or CAB-CONSOLE-USB for console access and PWR-CLP to retain the power cord; both are separate accessories that are easy to leave off the order.

Optional Add-ons

Model

Description

CAB-CONSOLE-RJ45

Cisco console cable 6 ft. with RJ-45 for all Catalyst 1000 models

PWR-CLP

Power cable restraining clip for all Catalyst 1000 models

Specifications

Parameter Specification Parameter Specification
Product ID C1000-24T-4G-L Product type Fixed managed Gigabit Ethernet Layer 2 switch
Downlink ports 24 x 10/100/1000 RJ45 data ports Uplink ports 4 x 1G SFP uplinks
Default PoE budget Data switch with no PoE budget Fan design Fanless 24-port model
Internal power input Single fixed internal AC power supply Voltage 100 to 240V AC in
Frequency 50 to 60 Hz Input current 0.29A to 0.47A
Power rating 0.08 kVA maximum consumption Consumption without PoE 22.8W
Forwarding bandwidth 28 Gbps for 24-port models with 1G uplinks Switching capacity 56 Gbps for 24-port models with 1G uplinks
Forwarding rate 41.67 Mpps for 24-port models with 1G uplinks MAC addresses 16000
Maximum active VLANs 256 VLAN IDs available 4094
Maximum STP instances 64 Maximum SPAN sessions 4
Console port RJ-45 Ethernet console USB-A port 1 USB-A port for storage and Bluetooth console
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
Dimensions 17.48 x 9.45 x 1.73 in. Weight 2.63 kg
SFP thermal note GLC-BX-U or GLC-BX-D use lowers the operating temperature limit on this model

Quality Certifications

Customer Reviews

Write A Review
4.9
(8 reviews)
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7
4 Stars
1
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0
2 Stars
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    Tyler Kumar
    Posted on 28/03/2026
    Verified Buyer
    4.0

    Every reorder confirms we made the right vendor choice.

    Tomas Scott
    Posted on 10/03/2026
    Verified Buyer
    5.0

    Our team confirmed stable operation within the first 24 hours.

    Olga Porter
    Posted on 30/12/2025
    Verified Buyer
    5.0

    After-sale touchpoints have been positive and professional.

    Dog
    Posted on 05/09/2024
    Verified Buyer
    5.0

    (Happy mechanical noises) – Box good! Switch good!

    Eli Vance
    Posted on 30/06/2024
    Verified Buyer
    5.0

    Old school reliability. Solid metal construction. Good to see.

Questions & Answers

  • Can C1000-24T-4G-L be stacked with other switches?

    C1000-24T-4G-L joins other Catalyst 1000 Gigabit switches in a Single IP Management group of up to eight units, linked through their SFP uplinks and managed from one IP address. Only 1G models can be grouped with other 1G models.

  • How far does Layer 3 routing go on C1000-24T-4G-L, and how is it managed?

    C1000-24T-4G-L routes between VLANs with static routes only, with room for 542 direct and 256 indirect IPv4 unicast routes. Dynamic routing protocols are not part of the feature set. Management uses the RJ-45 Ethernet console port or a Bluetooth console on the USB-A port.

  • Does C1000-24T-4G-L forward jumbo frames, and at what MTU?

    C1000-24T-4G-L supports a Layer 3 MTU of 9198 bytes and jumbo Ethernet frames of 10,240 bytes. These values apply to all Catalyst 1000 models. Connected servers and uplink peers must use matching MTU values, because a frame over the smallest MTU on the path is dropped.

  • Which ACL and multicast table sizes apply on C1000-24T-4G-L?

    C1000-24T-4G-L holds 600 IPv4 and MAC security ACEs, 600 IPv6 ACEs and 1024 multicast groups, alongside 16,000 unicast MAC addresses. The public datasheet gives 16,000 MAC addresses, so size MAC tables from that value. Security policy is limited to 600 ACEs per address family.

  • Which IPv6 route and SVI limits apply on C1000-24T-4G-L?

    C1000-24T-4G-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 C1000-24T-4G-L run in at 5,000 ft and 10,000 ft?

    C1000-24T-4G-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 C1000-24T-4G-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 C1000-24T-4G-L. At most two ports can serve as management ports. Both uplinks can be single-IP ports, or one can stay a network port. Mixing SFP and SFP+ as management ports is not supported.

  • Can sFlow run on C1000-24T-4G-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 C1000-24T-4G-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 C1000-24T-4G-L?

    The datasheet states up to 8 egress queues and 2 thresholds per port on C1000-24T-4G-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 C1000-24T-4G-L be used for?

    The USB-A port on C1000-24T-4G-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.

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DataSheet Downloads

  • C1000-24T-4G-L Datasheet

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