C1000-48P-4X-L – 48x1G PoE+ Ports – 4x10G SFP+ Uplinks – 370W PoE Budget

Brand: Cisco Category: Catalyst 1000 Switches Model: C1000-48P-4X-L
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C1000-48P-4X-L Description

The C1000-48P-4X-L is a Cisco Catalyst 1000 Series fixed managed Layer 2 Gigabit Ethernet switch for access closets that power endpoints and aggregate over 10G fiber. The switch has 48 10/100/1000 RJ45 PoE+ ports, four 10G SFP+ uplinks, a 370W PoE budget with up to 30W per port and 176 Gbps of switching bandwidth at 130.94 Mpps. The PoE budget is fixed by the model, and the switch can be grouped under one management IP only with other Catalyst 1000 units that have 10G uplinks.

Quick Specs

Parameter

Specification

Product ID

C1000-48P-4X-L

Product type

Fixed managed Gigabit Ethernet Layer 2 switch

Downlink ports

48 x 10/100/1000 RJ45 PoE+ ports

Uplink ports

4 x 10G SFP+ uplinks

Default PoE budget

370W available PoE

Per-port PoE support

Up to 30W per PoE port

Fan design

Fan-cooled 48-port model

Internal power input

Single fixed internal AC power supply

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 13.78 x 1.73 in.

Weight

5.43 kg

Product Performance

High-density Powered Access
Available PoE Budget
48-port 10G-Uplink Forwarding Class

Key Features

48 PoE+ Ports With 10G Uplinks

The switch pairs full 48-port copper density with 10G upstream capacity, which keeps a dense closet from oversubscribing its uplink as heavily as 1G fiber would.

370W Fixed PoE Budget

Each port can source up to 30W, but the 370W total averages about 7.7W per port across all 48, so heavier endpoints need a power plan.

Four SFP+ Uplinks Also Take 1G Optics

The SFP+ slots accept 10G SFP+ and 1G SFP modules, and changing between module types on a mapped port requires default-interface to clear its configuration.

176 Gbps Switching Bandwidth

The 10G-uplink 48-port class reaches 130.94 Mpps of forwarding rate, against 77.38 Mpps for the same port count with 1G uplinks.

Perpetual PoE

Power to connected devices stays on while the switch reloads, so phones and cameras keep running through a software upgrade.

Single IP Management For 10G Units

Up to eight Catalyst 1000 switches with 10G uplinks can join one management group over the front-panel SFP+ ports. Units with 1G uplinks cannot join the same group.

Application Scenarios

Dense Office Floor With PoE+ Devices

On a large office floor, the switch powers phones, access points and cameras from its PoE+ ports and sends their traffic to the core over 10G SFP+ uplinks.

Wi-Fi Edge In A Campus Building

A campus building can feed ceiling access points from the 48 PoE+ ports while the 10G uplinks keep the aggregate Wi-Fi load from saturating a single gigabit link.

Camera And Sensor Closet

A logistics site can terminate PoE+ cameras and badge readers on one switch, with up to 30W per port inside a 370W total budget.

Product Comparison

Parameter

C1000-48P-4X-L

C1000-48P-4G-L

C1000-48T-4X-L

C1000-48FP-4X-L

Ports

48 x 10/100/1000 RJ45 PoE+

48 x 10/100/1000 RJ45 PoE+

48 x 10/100/1000 RJ45 data

48 x 10/100/1000 RJ45 PoE+

Uplinks

4 x 10G SFP+

4 x 1G SFP

4 x 10G SFP+

4 x 10G SFP+

Default PoE budget

370W

370W

No PoE budget

740W

Switching capacity

176 Gbps

104 Gbps

176 Gbps

176 Gbps

Forwarding rate

130.94 Mpps

77.38 Mpps

130.94 Mpps

130.94 Mpps

Fanless

No

No

No

No

Weight

5.43 kg

5.43 kg

3.95 kg

5.82 kg

Power rating

0.5 kVA

0.5 kVA

0.06 kVA

0.95 kVA

C1000-48P-4X-L is the 370W PoE+ model with four 10G SFP+ uplinks at 130.94 Mpps, while C1000-48P-4G-L keeps the same 48 PoE+ ports and 370W budget on four 1G SFP uplinks at 77.38 Mpps. When attached powered devices exceed 370W, C1000-48FP-4X-L doubles the budget to 740W on the same 10G uplinks. Where phones, cameras and access points have their own power, C1000-48T-4X-L keeps the 10G uplinks without PoE and weighs 3.95 kg against 5.43 kg. Single IP Management groups 10G models only with other 10G models, so mixed 4G and 4X orders cannot share a group. Catalyst 1000 has one universal IOS image and no license tiers to upgrade.

PoE Power Planning

Check Item

Cisco-confirmed Value

Planning Impact

Available PoE

370W

Count the combined draw of all powered devices against this model-level limit

Per-port PoE support

Up to 30W per PoE port

Individual PoE+ endpoints can be planned only within the total 370W budget

Consumption with PoE

435.09W

UPS sizing should account for the powered-switch draw rather than the no-PoE baseline

Higher-PoE alternative

C1000-48FP-4X-L with 740W available PoE

Use the FP model when the attached powered devices cannot fit within 370W

Ordering Checklist

  • Uplink optics: Add SFP+ or SFP modules for the four SFP+ uplink slots, checked in the Cisco Transceiver Module Compatibility Matrix. No module list is given for the switch, and swapping between 1G SFP and 10G SFP+ on a mapped port needs default-interface to clear its configuration.
  • Power cord: Select one AC power cord for the destination country. The chassis ships without a cord and the ordering guide requires one to be selected.
  • Console cable and cord clip: Add CAB-CONSOLE-RJ45 or CAB-CONSOLE-USB for management access, and PWR-CLP to retain the power cord. These are separate line items, so a switch ordered without them arrives with no console cable or cord clip.

Optional Add-ons

Model

Description

CAB-CONSOLE-RJ45

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

CAB-CONSOLE-USB

Cisco console cable option with USB connector for switch 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 C1000-48P-4X-L Product type Fixed managed Gigabit Ethernet Layer 2 switch
Downlink ports 48 x 10/100/1000 RJ45 PoE+ ports Uplink ports 4 x 10G SFP+ uplinks
Default PoE budget 370W available PoE Per-port PoE support Up to 30W per PoE port
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
Current 0.42A to 0.74A Power rating 0.5 kVA maximum consumption
Consumption without PoE 54.49W Consumption with PoE 435.09W
Default PoE budget 370W Maximum power wattage for BTU/hr 500.3W
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
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 13.78 x 1.73 in. Weight 5.43 kg

Quality Certifications

Customer Reviews

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    Henrik Jackson
    Posted on 04/03/2026
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    4.0

    Exactly what we needed. No complaints. Invoice formatting was a bit different from what our AP system expects, but workable.

    Kevin Lopez
    Posted on 02/02/2026
    Verified Buyer
    5.0

    Customer-first attitude is evident in every interaction, including post-sale.

    Karen Lopez
    Posted on 29/12/2025
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    5.0

    Our entire team has bought into Layer23 as a primary source.

    Hank Schrader
    Posted on 05/10/2024
    Verified Buyer
    5.0

    They’re minerals, Marie! And this is a solid metal switch. sturdy build.

    Mike Ehrmantraut
    Posted on 25/07/2024
    Verified Buyer
    5.0

    No half measures. You shipped it right, packed it tight. Job done.

Questions & Answers

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

    Yes, through Single IP Management. C1000-48P-4X-L can be grouped under one management IP with up to eight Catalyst 1000 switches that have 10G uplinks, linked over the front-panel SFP+ ports. Units with 1G uplinks cannot join the same group.

  • At which network layer does C1000-48P-4X-L operate, and how is it managed?

    C1000-48P-4X-L is a fixed managed Layer 2 switch with one universal IOS image and no license tier to upgrade. Management is through the RJ-45 Ethernet console, the USB-A port with a Bluetooth console, or one shared IP across up to eight Catalyst 1000 units with 10G uplinks.

  • Does C1000-48P-4X-L forward jumbo frames, and at what MTU?

    C1000-48P-4X-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 C1000-48P-4X-L?

    C1000-48P-4X-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 C1000-48P-4X-L?

    C1000-48P-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 C1000-48P-4X-L run in at 5,000 ft and 10,000 ft?

    C1000-48P-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 C1000-48P-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 C1000-48P-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 C1000-48P-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 C1000-48P-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 C1000-48P-4X-L?

    The datasheet states up to 8 egress queues and 2 thresholds per port on C1000-48P-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 C1000-48P-4X-L be used for?

    The USB-A port on C1000-48P-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.

  • Does perpetual PoE on C1000-48P-4X-L keep endpoints powered during a switch power outage?

    No. Perpetual PoE on C1000-48P-4X-L applies only to soft reloads, meaning an image upgrade, a crash or a manual reboot. It does not cover a switch power outage or removal of the power supply. Phones and access points still lose power if the AC feed to the switch drops.

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