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Expansion card improved flexibility of the chassis.
WS-X4992
Cisco 4900M Switch WS-X4992
FEATURED DEAL
Name:
WS-X4992
- Description:
- Cisco 4900M Switch WS-X4992
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658172076
- Condition:
- Warranty:
- 3
- List Price:
$700.00
- Price:
$299.0057.3% off
Quantity:
1
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WS-X4992 Overview
WS-X4992 is a high-performance, rack-mount switch engineered with an advanced modular architecture that supports both Layer 2 and Layer 3 functionalities. It offers flexible power options with redundant AC power supplies, a diverse array of ports including combo Ethernet and uplink configurations of up to 10G, and robust stacking capabilities that ensure seamless scalability and exceptional overall performance for data-intensive environments.
WS-X4992 is designed for enterprise applications where high reliability and efficient network management are paramount. Its extensive port options, including 12 SFP ports and 24 dedicated downlink ports, complement a modular design that facilitates easy expansion and stacking, catering to varied use cases from campus networks to mission-critical data centers while delivering optimal throughput and energy efficiency.
WS-X4992 price is $299.00, a 57.3% saving from the Cisco list price of $700.00. WS-X4992 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-X4992 for additional pricing. Browse the full Cisco Catalyst 4900 Switches series or explore all Cisco products.
WS-X4992 Specifications
- Product Type
- Switch
- Power Source
- Redundant Power Supply / AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- 200 W
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 24 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Combo
- Redundant Power Supply Supported
- Yes
- Manufacturer Part Number
- WS-X4992
- Uplink Configuration
- 10G
- IOS
- IP Services
- POE Support
- POE+
- SFP Ports
- 12 SFP Ports
- Memory
- 512 MB
- Rack Units
- 2 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 4 expansion slots available
- Flash Memory
- 256 MB
- Switching Capacity
- 320 Gbps
- Switching Capacity with Stacking
- 640 Gbps
- Product Name
- WS-X4992 High-Performance Stacked Switch
- Height
- 3.5 inches
- Width
- 17.5 inches
- Depth
- 12 inches
- Weight
- 25 lbs
WS-X4992 Use Case
High-Density Data Center ToR Aggregation
In a virtualized data center with 200+ hypervisor hosts, the WS-X4992 module on a Cisco 4900M delivers 48 non-blocking 1GbE ports plus four 10GbE uplinks for Top-of-Rack switching. By consolidating server traffic at wire-speed and enabling Hot-Standby Router Protocol (HSRP) for seamless failover, IT teams achieve sub-microsecond latency, 99.999% uptime, and simplified VLAN management—boosting VM migration performance and reducing rack-level cabling complexity.
Enterprise Campus Aggregation with QoS and Resiliency
In a multi-building corporate campus connecting 3,000 users and IP telephony endpoints, deploying the WS-X4992 in Cisco Catalyst 4900M chassis centralizes access-layer uplinks. Integrated hardware QoS, 802.1Q trunking and Link Aggregation Control Protocol (LACP) ensure voice/video priority and automatic load balancing. The result: consistent MOS >4.0 for VoIP calls, 50% faster failover times under spanning tree reconvergence, and a single-pane-of-glass for security policy enforcement.
Secure Multi-Tenant Metro Ethernet Distribution
An ISP delivers business-class Metro Ethernet to 50 SMB and enterprise customers over fiber rings. Installing the WS-X4992 in a Cisco 4900M node enables VRF-Lite segmentation, private VLANs, and ACL-based edge security on 48 customer ports. Four dedicated 10GbE uplinks connect to the provider backbone. This architecture guarantees SLA-driven bandwidth isolation, mitigates east-west traffic breaches, and simplifies on-demand service provisioning—driving 30% lower operational expenditure and strong compliance with data-segregation mandates.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 WS-X4992 |  WS-X4908-10GE |  WS-C4948-10GE |  WS-C4928-10GE |  WS-C4948-S | |
|---|---|---|---|---|---|
| Depth | 12 inches | N/A | 18 inches | 18 inches | 18 inches |
| Ethernet Technology | 10/100/1000 | 10 Gigabit Ethernet | 10/100/1000 | 10/100/1000 | 10/100 |
| Flash Memory | 256 MB | N/A | 64 MB | 64 MB | 32 MB |
| Form Factor | Rack-mount | Chassis | Rack-mount | Rack-mount | Rack-mount |
| Height | 3.5 inches | N/A | 1.75 inches | 1.75 inches | 1.75 inches |
| IOS | IP Services | IP Services | LAN Lite | IP Services | LAN Lite |
| Interface Ports | 10/100/1000 | N/A | 10/100/1000 | 10/100/1000 | 10/100 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 | Layer 2 / Layer 3 | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | WS-X4992 | WS-X4908-10GE | WS-C4948-10GE | WS-C4928-10GE | WS-C4948-S |
| Media Type Supported | Combo | Fiber | Twisted Pair / Fiber | Twisted Pair / Fiber / Combo | Twisted Pair / Fiber |
| Memory | 512 MB | N/A | 256 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 8 Ports | 24–48 Ports | 48 Ports | 48 Ports |
| Number of Ethernet Ports | 24–48 Ports | Under 12 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | POE+ | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 4 expansion slots available | N/A | 48 × 10/100/1000 Ethernet ports and 4 × 10GE SFP+ uplink ports | 48 fixed Ethernet ports with 4 integrated 10GE uplink ports | N/A |
| Power Consumption | 200 W | N/A | 350 W | N/A | N/A |
| Power Source | Redundant Power Supply / AC Power Supply | Redundant Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply |
| Product Name | WS-X4992 High-Performance Stacked Switch | Cisco Catalyst WS-X4908-10GE 10 Gigabit Ethernet Module | Cisco Catalyst 4948-10GE | Cisco Catalyst 4928-10GE Switch | Cisco Catalyst 4948-S Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 2 RU | N/A | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | Yes | Yes | Yes | No |
| SFP Ports | 12 SFP Ports | N/A | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 320 Gbps | N/A | 176 Gbps | 128 Gbps | 32 Gbps |
| Switching Capacity with Stacking | 640 Gbps | N/A | 352 Gbps | 256 Gbps | 64 Gbps |
| Uplink Configuration | 10G | 10G | 10G | 10G | 1G |
| Weight | 25 lbs | N/A | 25 lbs | 25 lbs | 16 lbs |
| Width | 17.5 inches | N/A | 19 inches | 17.5 inches | 19 inches |
Reviews & Ratings
S
Sadia Naeem
4
Stable and compatible.
Y
Yuki Sato
5
No errors observed.
O
Owais Shah
5
Good addition.
H
Hannah Lewis
5
Satisfied overall.
Questions & Answers
What is the Cisco WS-X4992 switch module?
The Cisco WS-X4992 is a 48-port 10/100/1000 Gigabit Ethernet switch module with four SFP uplink ports designed for the Catalyst 4900M chassis, delivering high-density Gigabit connectivity and advanced Layer 2 switching capabilities.
How many Ethernet ports and uplinks does the WS-X4992 provide?
The WS-X4992 offers 48 fixed 10/100/1000BASE-T Ethernet ports plus four dedicated SFP uplink ports that support 1000BASE-SX/LX fiber connectivity.
Which chassis is the WS-X4992 compatible with?
The WS-X4992 is exclusively compatible with the Cisco Catalyst 4900M Modular Switch chassis, supporting up to three line cards per chassis for flexible deployment.
What uplink options are available on the WS-X4992?
WS-X4992 includes four SFP uplink ports that support 1000BASE-SX, 1000BASE-LX, and Cisco SFP fiber transceivers for versatile fiber or copper uplink configurations.
What is the switching capacity and forwarding rate of the WS-X4992?
The module delivers a switching capacity of 19.2 Gbps per module and a forwarding rate up to 14.3 million packets per second (Mpps) for low-latency packet processing.
Does the WS-X4992 support Layer 3 routing features?
Yes, when paired with an optional Route Switch Processor (RSP) in the Catalyst 4900M chassis, the WS-X4992 supports full Layer 3 routing, including OSPF, EIGRP, and BGP.
How do I install the WS-X4992 in my Catalyst 4900M chassis?
Power down the chassis, slide the WS-X4992 module into an available line card slot, secure it with captive screws, then power up the chassis for automatic module recognition.
Does the WS-X4992 support Power over Ethernet (PoE)?
No, the WS-X4992 does not support PoE. For powered endpoints, install a compatible PoE-capable module in the Catalyst 4900M chassis.
What management interfaces does the WS-X4992 support?
Management is provided through the Catalyst 4900M chassis management module, offering CLI, Telnet/SSH, SNMP v2/v3, and CiscoWorks integration for centralized control.
What are the power requirements for the WS-X4992 module?
The WS-X4992 draws approximately 30 W at full load and requires two redundant 650 W power supplies in the 4900M chassis for high availability.
What warranty and support options are available for WS-X4992?
WS-X4992 is covered by Cisco’s limited lifetime warranty. Optional Smart Net Total Care provides 24/7 hardware replacement, software updates, and technical support.
How can I upgrade the firmware on the WS-X4992?
Upgrade firmware via the Route Switch Processor using standard IOS procedures over TFTP, FTP or USB. Ensure compatibility with your chassis and line card IOS image.
What security features are included in WS-X4992?
WS-X4992 supports 802.1X port-based authentication, Dynamic ARP Inspection, Port Security, VLAN ACLs and Secure Shell (SSH) for comprehensive network protection.
How does the WS-X4992 enhance network performance?
By providing high-density Gigabit ports, wire-speed Layer 2 switching, advanced QoS queuing and hardware-based multicast support, WS-X4992 optimizes traffic flow and minimizes latency.
Can I stack multiple WS-X4992 modules?
Physical stacking of WS-X4992 modules is not supported; however, the Catalyst 4900M chassis offers a single management plane for all installed line cards.
What cooling requirements does the WS-X4992 have?
WS-X4992 relies on the Catalyst 4900M chassis fan tray for front-to-back airflow; no additional module-specific fans are required for proper cooling.
Where can I purchase the Cisco WS-X4992 switch module?
Cisco WS-X4992 is available through authorized Cisco resellers, partner portals, and the Cisco online store. Contact certified distribution channels for pricing and availability.