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Name:
WS-X4148-RJ
- Description:
- Catalyst 4500 PoE 802.3af 10/100/1000, 48-Ports (RJ45) Linecard
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- 818250305239
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WS-X4148-RJ Overview
WS-X4148-RJ is an Ethernet module featuring 48 high-performance RJ-45 ports that deliver reliable 1Gbps connectivity for enterprise networks. Designed for seamless integration, this modular card supports TCP/IP protocols and is ideal for expanding data center capacity and upgrading server network interfaces.
Specifically engineered for compatibility with Cisco Catalyst platforms, WS-X4148-RJ provides secure and efficient connectivity in environments such as data centers, branch offices, and campus networks. Its robust design and support for essential features like auto-negotiation, Wake-on-LAN, jumbo frames, and QoS ensure optimal performance for connecting to high-speed networks.
What is the price of WS-X4148-RJ?
Pricing for WS-X4148-RJ is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for WS-X4148-RJ.
Explore more options from Network Modules And Cards or explore other Cisco products.
WS-X4148-RJ Specifications
| Product Type | Network Module / Network Card |
| Module Type | Ethernet |
| Data Rate | 1Gbps |
| Connector Type | RJ-45 |
| Supported Protocols | TCP/IP |
| Form Factor | Modular |
| Operating Temperature | 0 to 70°C |
| Storage Temperature | -40 to 85°C |
| Input Voltage | 3.3V |
| Compatibility | Cisco |
| Max Speed | 1Gbps |
| Supported Features | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS |
| Power Consumption | 15W |
| Interface Ports | Ethernet |
| Expansion Slots | N/A |
| Product Name | WS-X4148-RJ |
| Height | N/A |
| Width | N/A |
| Depth | N/A |
| Weight | N/A |
WS-X4148-RJ Use Case
Enterprise VoIP Telephony Infrastructure with Catalyst 4500 PoE Linecard
In a 500-employee corporate headquarters, network engineers install the WS-X4148-RJ-Catalyst 4500 PoE 802.3af 10/100/1000 linecard in a Catalyst 4500 chassis to power and connect 48 IP phones over a single uplink. This centralized PoE solution reduces cabling complexity, delivers up to 370W total power budget, ensures 24×7 voice uptime, and simplifies QoS management—enabling seamless VoIP deployments and guaranteed call quality.
High-Density Wireless Access Point Deployment on Campus Networks
A university IT department integrates the WS-X4148-RJ-Catalyst 4500 PoE linecard to supply 802.3af power and Gigabit connectivity to 48 outdoor and indoor access points across multiple dorms. By leveraging 10/100/1000 PoE ports and Cisco IOS unified management, the campus achieves higher wireless density, centralized power control, and rapid fault isolation—delivering reliable Wi-Fi performance for thousands of students.
IP Video Surveillance Backbone in Retail Environments
A nationwide retail chain deploys the Catalyst 4500 chassis with the WS-X4148-RJ linecard in its regional data centers to power 48 PoE security cameras per rack. The 802.3af support and Gigabit uplinks ensure consistent video streaming and PoE power delivery, while redundant supervisor modules provide high availability. This design streamlines rack space, reduces on-site power injectors, and delivers 24/7 HD surveillance with centralized monitoring.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| Compatibility | Cisco | Cisco, Juniper, Arista, Dell, HP | Cisco, Juniper, Arista, Dell, HP | Cisco | Cisco |
| Connector Type | SFP+ | SFP+ | SFP+ | RJ21 | RJ-45 |
| Data Rate | 10Gbps | 10Gbps | 10G | 1Gbps | 1Gbps |
| Depth | N/A | 7.0 inches | 7.0 inches | N/A | N/A |
| Expansion Slots | N/A | N/A | N/A | N/A | N/A |
| Form Factor | Modular | PCIe | Modular | Modular | Modular |
| Height | N/A | 1.0 inches | 1.5 inches | N/A | N/A |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Interface Ports | SFP+ | Ethernet, SFP+ | Ethernet | Ethernet | Ethernet |
| Max Speed | 10Gbps | 10Gbps | 10Gbps | 1Gbps | 1Gbps |
| Module Type | N/A | Ethernet | Ethernet | Ethernet | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 15W | 6W | 15W | 15W | 15W |
| Product Name | WS-X45-SUP7L-E | WS-X4593-E High Performance Ethernet Network Card | WS-X4516 10G Ethernet Module | WS-X4248-RJ21V | WS-X4148-RJ |
| Product Type | Supervisor Module | Network Card | Network Module | Network Module | Network Module / Network Card |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Features | Auto-negotiation / Jumbo Frames / QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS |
| Supported Protocols | TCP/IP | TCP/IP, iSCSI | TCP/IP | TCP/IP | TCP/IP |
| Weight | N/A | 0.4 lbs | 0.8 lbs | N/A | N/A |
| Width | N/A | 4.4 inches | 3.5 inches | N/A | N/A |
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Questions & Answers
Q
What is the Catalyst 4500 PoE 802.3af 10/100/1000 48-Ports (RJ45) line card (SKU WS-X4148-RJ)?
A
The WS-X4148-RJ is a Cisco Catalyst 4500 series line card providing 48 RJ-45 Gigabit Ethernet ports with IEEE 802.3af Power over Ethernet.
Q
How many IEEE 802.3af PoE ports does WS-X4148-RJ support and what is the per-port power allocation?
A
WS-X4148-RJ supports 48 IEEE 802.3af PoE ports, delivering up to 15.4 W per port for IP phones, wireless access points, and cameras.
Q
What is the total PoE power budget of the WS-X4148-RJ line card?
A
The WS-X4148-RJ line card provides a total PoE budget of up to 370 W, subject to chassis power-supply and supervisor engine capacity.
Q
Which Cisco Catalyst 4500 chassis models are compatible with WS-X4148-RJ?
A
WS-X4148-RJ is supported in Catalyst 4500-E and 4500-X series chassis including 4503-E, 4506-E, 4510R-E, and 4513R-E, with G-series supervisor engines.
Q
Does the WS-X4148-RJ line card support IEEE 802.3at (PoE+)?
A
No, WS-X4148-RJ supports only IEEE 802.3af PoE. For PoE+ (30 W per port), use the WS-X4548-GB-RJ45V+ line card.
Q
What switching capacity and forwarding rate does WS-X4148-RJ deliver?
A
WS-X4148-RJ delivers up to 64 Gbps of switching capacity and a forwarding rate of 43 Mpps (million packets per second) at line rate.
Q
How is the WS-X4148-RJ line card installed and configured in a Catalyst 4500 chassis?
A
WS-X4148-RJ is hot-swappable into an open line-card slot; it auto-detects via the supervisor engine and is configured using Cisco IOS interface commands.
Q
Can I mix the WS-X4148-RJ with other Cisco Catalyst 4500 line cards?
A
Yes, Catalyst 4500 chassis support mixed line-card installations, provided the supervisor engine and backplane bandwidth accommodate combined capacity.
Q
Does WS-X4148-RJ support high-availability features?
A
Yes, WS-X4148-RJ supports supervisor engine redundancy and stateful switchover in compatible Catalyst 4500 configurations for uninterrupted operation.
Q
What Layer 2 and Layer 3 features are supported on WS-X4148-RJ?
A
WS-X4148-RJ supports VLANs, spanning tree, QoS, ACLs, multicast snooping, as well as static routing and dynamic protocols (OSPF, EIGRP, BGP) with the right supervisor.
Q
How can I monitor port and PoE usage on WS-X4148-RJ?
A
Use Cisco IOS commands (show power inline, show interface status), SNMP, or Cisco Prime Infrastructure to view real-time PoE and port statistics.
Q
What power-supply redundancy options are available for WS-X4148-RJ deployments?
A
Catalyst 4500 chassis support multiple AC or DC power supplies; PoE load is balanced across supplies for redundancy and uninterrupted power delivery.
Q
What warranty and support options are available for WS-X4148-RJ?
A
WS-X4148-RJ includes Cisco’s limited lifetime hardware warranty; Cisco SMARTnet offers 24/7 technical support, advanced replacement, and OS updates.
Q
How do I upgrade from WS-X4148-RJ to a PoE+ capable line card?
A
To upgrade, remove WS-X4148-RJ and install a WS-X4548-GB-RJ45V+ line card, ensuring supervisor and power-supply compatibility for 802.3at support.
Q
What are the physical dimensions and slot requirements for WS-X4148-RJ?
A
WS-X4148-RJ occupies one full-height slot in a Catalyst 4500 chassis and weighs approximately 3 kg with dimensions of 438 × 45 × 388 mm.
Q
Can I stack multiple Catalyst 4500 chassis with WS-X4148-RJ installed?
A
Yes, compatible Catalyst 4500 chassis can be stacked using Cisco StackWise or VSS technologies for unified management and high throughput.
