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High-density XG switch handled traffic spikes smoothly.
JG838A
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HPE FlexFabric 5900CP 48XG 4QSFP+ Switch
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JG838A
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- HPE FlexFabric 5900CP 48XG 4QSFP+ Switch
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JG838A Overview
JG838A is a high-performance network switch featuring a modular architecture engineered for modern enterprise networking. It integrates versatile power options and a range of Ethernet and SFP ports while supporting stacking technologies for seamless scalability and enhanced performance in diverse network deployments.
The device is optimized for critical use cases including data centers, branch offices, and campus networks by delivering consistent throughput and low latency. Its design emphasizes reliable power management, flexible uplink configurations, and robust stacking capabilities to ensure efficient network expansion and operational resilience.
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JG838A Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Layer Supported
- Layer 2
- Form Factor
- Rack-mount
- Power Consumption
- N/A
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 24 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Twisted Pair
- Redundant Power Supply Supported
- Yes
- Manufacturer Part Number
- JG838A
- Uplink Configuration
- 1G / 10G
- IOS
- IP Services
- POE Support
- POE+
- SFP Ports
- 4 SFP Ports
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- N/A
- Flash Memory
- 64 MB
- Switching Capacity
- N/A
- Switching Capacity with Stacking
- N/A
- Product Name
- JG838A Enterprise Switch
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
JG838A Use Case
Hyperscale Data Center Spine-Leaf Fabric Deployment
In a hyperscale e-commerce environment demanding seamless scalability and sub-millisecond latency, the JG838A-HPE FlexFabric 5900CP 48XG 4QSFP+ Switch serves as both spine and leaf. It leverages 100 GbE QSFP+ uplinks, EVPN-VXLAN virtualization, and deep packet buffers to handle dynamic traffic surges. Outcome: 2× higher throughput, automated provisioning, and a scalable fabric supporting up to 4 000 25 GbE server connections without performance degradation.
Campus Core Aggregation for Unified Communications & Video
A global university upgrades to high-definition remote classrooms and real-time collaboration. Deploying the JG838A-HPE FlexFabric 5900CP at the campus core aggregates 48×10/25 GbE edge links and 4×40/100 GbE uplinks, while integrated QoS, SmartRate and IRF deliver traffic prioritization and hitless failover. Outcome: sub-5 ms latency, 99.999% network availability, and seamless HD video streaming across thousands of concurrent sessions.
High-Performance Computing Cluster Interconnect
A research center requires ultra-low-latency interconnects for large-scale simulations. The JG838A-HPE FlexFabric 5900CP is deployed as the leaf layer in an HPC cluster, offering RDMA over Converged Ethernet (RoCE), 100 GbE QSFP+ ports, cut-through switching and Data Center Bridging for lossless transport. Outcome: sub-30 µs latency, 200 Gbps bi-sectional bandwidth, and a 25% boost in simulation throughput.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| JG838A |  JH321A |  JH179A |  JG510A |  JG219B | |
|---|---|---|---|---|---|
| Depth | N/A | 19.7 inches | 10.5 inches | 17 inches | 14 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 256 MB | 64 MB | 64 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | N/A | 1.75 inches | 1.75 inches | 1 inches | 1.75 inches |
| IOS | IP Services | IP Services | IP Services | LAN Base | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | JG838A | JH321A | JH179A | JG510A | JG219B |
| Media Type Supported | Twisted Pair | Twisted Pair / Fiber / Combo | Twisted Pair / Fiber | Combo | Combo |
| Memory | 256 MB | 512 MB | 256 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 24 Ports | 24 Ports | 8 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | POE+ | POE+ | POE+ | POE+ | POE+ |
| Port/Expansion Slot Details | N/A | N/A | 24 x 10/100/1000 Ethernet, 4 x 10G SFP+ uplinks | N/A | N/A |
| Power Consumption | N/A | 250W | 85 W | 75 W | 75W |
| Power Source | AC Power Supply | Redundant Power Supply / AC Power Supply / N/A | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | JG838A Enterprise Switch | JH321A High-Performance Network Switch | JH179A Advanced Stackable Gigabit Switch | JG510A Enterprise Stackable Switch | JG219B High-Performance Network Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | Yes | Yes | Yes | Yes |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | N/A | 320 Gbps | 128 Gbps | 64 Gbps | 128 Gbps |
| Switching Capacity with Stacking | N/A | 640 Gbps | 256 Gbps | 128 Gbps | 256 Gbps |
| Uplink Configuration | 1G / 10G | 10G | 10G | 1G | 1G |
| Weight | N/A | 15 lbs | 15 lbs | 15 lbs | 14 lbs |
| Width | N/A | 17.5 inches | 17.5 inches | 19 inches | 17.5 inches |
Reviews & Ratings
F
Furqan Aziz
5
Strong QSFP+ uplinks.
S
Soren Nielsen
5
Stable under load.
B
Bilal Saeed
5
Good performance headroom.
P
Patrick Doyle
4
Dependable FlexFabric platform.
Questions & Answers
What is the HPE FlexFabric 5900CP 48XG 4QSFP+ Switch (JG838A)?
The HPE FlexFabric 5900CP 48XG 4QSFP+ Switch (JG838A) is a high-performance, top-of-rack data center switch offering 48 10GbE SFP+ ports and four 40GbE QSFP+ uplinks in a 1U form factor.
What port density does the HPE FlexFabric 5900CP 48XG 4QSFP+ support?
It provides 48 SFP+ ports for 1/10 GbE connectivity and four QSFP+ ports for 40 GbE uplinks, delivering flexible port configurations for modern data centers.
What throughput and latency can I expect from the HPE FlexFabric 5900CP 48XG 4QSFP+?
The switch delivers up to 1.28 Tbps of switching capacity with sub-1 µs latency, ensuring wire-speed performance under full load.
Which virtualization features does the HPE FlexFabric 5900CP 48XG 4QSFP+ support?
It supports HPE FlexFabric 1:1 server virtualization, VXLAN overlay networks, and Intelligent Resilient Fabric (IRF) stacking for scalable, resilient data center fabrics.
How can I manage the HPE FlexFabric 5900CP 48XG 4QSFP+ Switch?
You can manage it via the web-based HPE Intelligent Management Center, HPE OneView, CLI, SNMP or RESTful APIs for seamless integration into existing workflows.
What stacking technology does the HPE FlexFabric 5900CP 48XG 4QSFP+ support?
It uses HPE IRF stacking over QSFP+ ports, supporting up to eight units with 80 Gbps of inter-switch bandwidth per stack.
What Layer 2 and Layer 3 protocols are supported?
The switch supports advanced Layer 2 protocols (STP, RSTP, MSTP, LACP) and Layer 3 features (OSPF, BGP, VRRP, IPv4/IPv6 static and dynamic routing).
What security features are offered by the HPE FlexFabric 5900CP 48XG 4QSFP+?
Security features include Access Control Lists (ACLs), 802.1X port authentication, DHCP snooping, ARP inspection and IP Source Guard for robust protection.
What are the power and cooling specifications for the HPE FlexFabric 5900CP 48XG 4QSFP+?
The switch supports dual hot-plug redundant power supplies (up to 1100 W each) with front-to-back airflow and variable-speed fans for efficient thermal management.
What energy efficiency features does the HPE FlexFabric 5900CP 48XG 4QSFP+ offer?
It includes IEEE 802.3az Energy Efficient Ethernet, per-port power gating and variable-speed fans to minimize energy consumption and operational costs.
Which transceivers and cables are compatible with the HPE FlexFabric 5900CP 48XG 4QSFP+?
It is compatible with HPE SFP+ and QSFP+ transceivers (10GBASE-SR/LR, 40GBASE-SR4/LR4) and passive/active QSFP+ DAC and AOC cables.
What are the dimensions and mounting options for the HPE FlexFabric 5900CP 48XG 4QSFP+?
The switch measures 44.0 cm x 43.6 cm x 4.4 cm (W x D x H) as a 1U rack-mountable unit and includes adjustable brackets for standard 19-inch racks.
What warranty and support packages are available for the HPE FlexFabric 5900CP 48XG 4QSFP+?
It includes a three-year limited warranty with next-business-day hardware replacement, plus optional HPE Care Pack services for extended coverage and priority support.
Where can I download the latest firmware and software for the JG838A switch?
The latest firmware and software are available for download on the HPE Support Center website under product SKU JG838A.
Is the HPE FlexFabric 5900CP 48XG 4QSFP+ suitable for data center top-of-rack deployments?
Yes, its high port density, low latency, robust virtualization features and IRF stacking make it ideal for top-of-rack data center architectures.