How do I install the WS-X4148-RJ21 line card?

Power off the Catalyst 4500 chassis, slide the line card into the desired slot, secure the captive screws, then power on for automatic detection.

Is the WS-X4148-RJ21 hot-swappable?

Yes, the WS-X4148-RJ21 supports hot-swap when used with a redundant Supervisor Engine IV and appropriate power redundancy.

What is the switching capacity of WS-X4148-RJ21?

It delivers up to 16 Gbps of Layer 2/3 switching capacity per card.

Does WS-X4148-RJ21 support VLAN and QoS features?

Yes, it supports full IEEE 802.1Q VLAN tagging, 802.1p QoS, ACLs, and advanced traffic prioritization.

How does WS-X4148-RJ21 handle redundancy?

Paired with a redundant Supervisor Engine and power supplies, the card enables high availability with nonstop forwarding and stateful switchover.

What are the power requirements for WS-X4148-RJ21?

It draws approximately 75 W maximum; ensure chassis power modules can deliver at least 200 W per card for full redundancy.

What environmental conditions are required?

Operate at 0 °C to 40 °C, 10%–85% relative humidity, non-condensing, with chassis cooling as per Catalyst 4500 guidelines.

How can I verify WS-X4148-RJ21 operation?

Use the “show module” and “show interfaces status” IOS commands to confirm module status and port operational state.

What warranty covers the WS-X4148-RJ21?

Cisco provides a limited lifetime hardware warranty for end users plus Access to the Cisco Technical Assistance Center (TAC).

Is WS-X4148-RJ21 still supported or end-of-life?

The WS-X4148-RJ21 is in extended support; check Cisco’s EOL announcement for replacement options like the 4500X series line cards.

Can WS-X4148-RJ21 be used in stacking or VSS?

While Catalyst 4500 doesn’t support VSS, it supports campus stacking via Cisco FlexStack modules on compatible chassis.

What are common replacement upgrades for WS-X4148-RJ21?

Consider Cisco Catalyst 4500X WS-C4506-E with 48-port gigabit line cards or Catalyst 4900M series for higher density and performance.

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WS-X4148-RJ21 Overview

WS-X4148-RJ21 is an Ethernet module engineered for high-density network deployments, featuring 48 RJ-45 ports that deliver reliable 10/100 Mbps connectivity. Built for integration into Cisco modular switching systems, this module is designed to enhance network capacity while maintaining robust and efficient data transmission in enterprise environments.

This modular card is fully compatible with Cisco Catalyst platforms and supports TCP/IP protocol along with industry-standard auto-negotiation, jumbo frames, and QoS features. Its plug-and-play form factor and streamlined installation make it an ideal solution for upgrading server network interfaces, expanding data center capacity, and connecting to high-speed networks in a variety of commercial and industrial settings.

WS-X4148-RJ21 price is is available on request. Get immediate quote.

Request bulk order quote for WS-X4148-RJ21 for additional pricing. Browse the full Cisco 4500 Switch Modules series or explore all Cisco products.

WS-X4148-RJ21 Specifications

Product Type: Network Module / Network Card
Module Type: Ethernet Module
Data Rate: 10/100Mbps
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: 100Mbps
Supported Features: Auto-negotiation, Jumbo Frames, QoS
Power Consumption: N/A
Interface Ports: Ethernet
Expansion Slots: N/A
Product Name: WS-X4148-RJ21
Height: N/A
Width: N/A
Depth: N/A
Weight: N/A

Quality Certifications

To get the detailed certification, please go to the Compliance Center.

Product Comparison Table

	WS-X4148-RJ21	WS-X45-SUP6L-E	WS-X4148-RJ	WS-X4248-FE-SFP	C4KX-FAN-R=
Product Type	Network Module / Network Card	Network Module	Network Module / Network Card	Network Module / Network Card	Network Module / Network Card
Module Type	Ethernet Module	Ethernet Module	Ethernet	Ethernet	Ethernet
Data Rate	10/100Mbps	10Gbps	1Gbps	10/100 Mbps	10Gbps
Connector Type	RJ-45	SFP+	RJ-45	SFP	SFP+
Supported Protocols	TCP/IP	TCP/IP, iSCSI	TCP/IP	TCP/IP	TCP/IP, iSCSI
Form Factor	Modular	PCIe	Modular	Modular	PCIe
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0°C to 40°C	0 to 70°C
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40°C to 70°C	-40 to 85°C
Input Voltage	3.3V	3.3V	3.3V	N/A	3.3V
Compatibility	Cisco	Cisco, Juniper, Arista, Dell, HP	Cisco	Cisco Catalyst Switches	Cisco, Juniper, Arista, Dell, HP
Max Speed	100Mbps	10Gbps	1Gbps	100Mbps	10Gbps
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, QoS, Jumbo Frames	Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS
Power Consumption	N/A	15W	15W	N/A	12W
Interface Ports	Ethernet	Ethernet	Ethernet	SFP	Ethernet
Expansion Slots	N/A	SFP+	N/A	N/A	N/A
Product Name	WS-X4148-RJ21	WS-X45-SUP6L-E	WS-X4148-RJ	WS-X4248-FE-SFP	C4KX-FAN-R=
Height	N/A	0.3 inches	N/A	N/A	N/A
Width	N/A	4.4 inches	N/A	N/A	N/A
Depth	N/A	1.7 inches	N/A	N/A	N/A
Weight	N/A	1.2 lbs	N/A	N/A	N/A

Reviews & Ratings

David Mitchell

The WS-X4148-RJ21 line card offers exceptional performance. It provides stable, high-speed connectivity and works flawlessly even with high traffic.

Olivia Roberts

This line card is perfect for our office. The WS-X4148-RJ21 ensures smooth communication and fast connections across our entire network.

James Carter

The WS-X4148-RJ21 delivers fast and reliable performance. It integrates seamlessly with our infrastructure and handles multiple connections effortlessly.

Sophia White

The WS-X4148-RJ21 is reliable and provides consistent performance. It ensures uninterrupted connectivity and stable communication for our business.

Benjamin Harris

The WS-X4148-RJ21 is a solid choice. It provides fast, reliable connectivity and handles high-demand traffic with ease.

Questions & Answers

What is the Cisco Catalyst 4500 WS-X4148-RJ21 line card?

The WS-X4148-RJ21 is a Catalyst 4500 series line card offering 32 10/100 RJ-45 ports and 2 GE uplink slots for enhanced enterprise switching.

How many ports are available on the WS-X4148-RJ21?

This line card delivers 32 Ethernet 10/100 RJ-45 ports and two Gigabit Ethernet GBIC uplink ports.

Which supervisors are compatible with WS-X4148-RJ21?

The WS-X4148-RJ21 is compatible with Supervisor Engine II, II+, III, III+, and IV modules in Catalyst 4500 chassis.

What IOS software does WS-X4148-RJ21 support?

It supports Cisco IOS Software versions 12.2(18)E, 12.2(18)SXF, 15.0, and later 4500 platforms releases.

Related Searches Cisco 4500 Switch Modules

WS-X4590-E WS-X4418-GB WS-X4516 WS-X4606-X2-E WS-X45-SUP6-E WS-X4K-CLOCK-E WS-X4232-GB-RJ WS-X4548-RJ45V+

WS-X4148-RJ21 Overview

WS-X4148-RJ21 price is is available on request. Get immediate quote.

Request bulk order quote for WS-X4148-RJ21 for additional pricing. Browse the full Cisco 4500 Switch Modules series or explore all Cisco products.

WS-X4148-RJ21 Specifications

Product Type

Network Module / Network Card

Module Type

Ethernet Module

Data Rate

10/100Mbps

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

100Mbps

Supported Features

Auto-negotiation, Jumbo Frames, QoS

Power Consumption

N/A

Interface Ports

Ethernet

Expansion Slots

N/A

Product Name

WS-X4148-RJ21

Height

N/A

Width

N/A

Depth

N/A

Weight

N/A

Product Comparison Table

	WS-X4148-RJ21	WS-X45-SUP6L-E	WS-X4148-RJ	WS-X4248-FE-SFP	C4KX-FAN-R=
Product Type	Network Module / Network Card	Network Module	Network Module / Network Card	Network Module / Network Card	Network Module / Network Card
Module Type	Ethernet Module	Ethernet Module	Ethernet	Ethernet	Ethernet
Data Rate	10/100Mbps	10Gbps	1Gbps	10/100 Mbps	10Gbps
Connector Type	RJ-45	SFP+	RJ-45	SFP	SFP+
Supported Protocols	TCP/IP	TCP/IP, iSCSI	TCP/IP	TCP/IP	TCP/IP, iSCSI
Form Factor	Modular	PCIe	Modular	Modular	PCIe
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0°C to 40°C	0 to 70°C
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40°C to 70°C	-40 to 85°C
Input Voltage	3.3V	3.3V	3.3V	N/A	3.3V
Compatibility	Cisco	Cisco, Juniper, Arista, Dell, HP	Cisco	Cisco Catalyst Switches	Cisco, Juniper, Arista, Dell, HP
Max Speed	100Mbps	10Gbps	1Gbps	100Mbps	10Gbps
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, QoS, Jumbo Frames	Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS
Power Consumption	N/A	15W	15W	N/A	12W
Interface Ports	Ethernet	Ethernet	Ethernet	SFP	Ethernet
Expansion Slots	N/A	SFP+	N/A	N/A	N/A
Product Name	WS-X4148-RJ21	WS-X45-SUP6L-E	WS-X4148-RJ	WS-X4248-FE-SFP	C4KX-FAN-R=
Height	N/A	0.3 inches	N/A	N/A	N/A
Width	N/A	4.4 inches	N/A	N/A	N/A
Depth	N/A	1.7 inches	N/A	N/A	N/A
Weight	N/A	1.2 lbs	N/A	N/A	N/A

Questions & Answers

What is the Cisco Catalyst 4500 WS-X4148-RJ21 line card?

The WS-X4148-RJ21 is a Catalyst 4500 series line card offering 32 10/100 RJ-45 ports and 2 GE uplink slots for enhanced enterprise switching.

How many ports are available on the WS-X4148-RJ21?

This line card delivers 32 Ethernet 10/100 RJ-45 ports and two Gigabit Ethernet GBIC uplink ports.

Which supervisors are compatible with WS-X4148-RJ21?

The WS-X4148-RJ21 is compatible with Supervisor Engine II, II+, III, III+, and IV modules in Catalyst 4500 chassis.

What IOS software does WS-X4148-RJ21 support?

It supports Cisco IOS Software versions 12.2(18)E, 12.2(18)SXF, 15.0, and later 4500 platforms releases.