HP
HP 2920-48G Procurve POE+ Switch J9836A
80 PLUS Silver
Power Your Network with Reliable PerformanceThe HP J9836A Procurve 2920-48G POE+ 740W Switch is a robust networking solution designed for businesses requiring Power over Ethernet (PoE+) capabilities. This switch delivers reliable performance and advanced features for efficient network management....
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Overview
Power Your Network with Reliable Performance
The HP J9836A Procurve 2920-48G POE+ 740W Switch is a robust networking solution designed for businesses requiring Power over Ethernet (PoE+) capabilities. This switch delivers reliable performance and advanced features for efficient network management.
- Brand: HP
- Model: J9836A
- Switch Type: Procurve 2920-48G POE+
- Ports: 48 x 10/100/1000 Ethernet ports
- PoE+ Power: 740W
- Traffic Prioritization: IEEE 802.1p
- Layer 4 Prioritization: TCP/UDP port-based
- Rate Limiting: Per-port ingress and per-queue minimums
- Energy Efficiency: 80 PLUS Silver certified power supply
- OpenFlow: Supports software-defined networking
Key Features
Traffic prioritization (IEEE 802.1p): allows real-time traffic classification into eight priority levels mapped to eight queues
Layer 4 prioritization: enables prioritization based on TCP/UDP port numbers
Rate limiting: sets per-port ingress enforced maximums and per-port, per-queue minimums
Large buffers: provide graceful congestion management
Auto-MDIX: provides automatic adjustments for straight-through or crossover cables on all 10/100 and 10/100/1000 ports
IEEE 802.3at Power over Ethernet (PoE+): provides up to 30 W per port that allows support of the PoE+-capable devices
Energy-efficient design: high-efficiency power supplies: 80 PLUS Silver certified power supply increases power savings
OpenFlow: is a key technology that enables software-defined networking by allowing the separation of data and control paths
Specifications
Model
2920-48G Procurve POE+ Switch J9836A
Traffic Prioritization Standard
IEEE 802.1p
Prioritization Levels
8
Layer Prioritization
Layer 4 (TCP/UDP port numbers)
Rate Limiting
Per-port ingress enforced maximums, per-port, per-queue minimums
Buffer Size
Large
PoE+ Standard
IEEE 802.3at
PoE+ Power Output
Up to 30 W per port
Auto-MDIX
Yes (on 10/100 and 10/100/1000 ports)
Power Supply Efficiency
80 PLUS Silver certified
SDN Support
OpenFlow
Pros & Cons
👍 Pros
- Offers traffic prioritization (IEEE 802.1p), allowing real-time classification into eight priority levels for efficient data flow.
- Includes Layer 4 prioritization, enabling precise data handling based on TCP/UDP port numbers for critical applications.
- Features rate limiting to set maximum ingress and minimum per-port, per-queue bandwidths, managing network congestion effectively.
- Equipped with large buffers that provide graceful congestion management, helping to prevent packet loss during high traffic.
- Supports IEEE 802.3at Power over Ethernet (PoE+), delivering up to 30W per port to power compatible devices such as IP phones and access points.
👎 Cons
- Specific port count beyond "48G" (likely 48 Gigabit Ethernet) is not detailed, nor are types of uplink ports, if any.
- Details on rack-mountability or physical dimensions are not provided, which could be important for installation planning.
- Management interface specifics (e.g., CLI, GUI, web-based) are not listed, requiring further investigation for administration.
- Lack of explicit mention of 10 Gigabit Ethernet (10GbE) ports means it might not be suitable for environments needing very high-speed uplinks.
- The "80 PLUS Silver certified power supply" indicates good efficiency, but higher certifications exist for even greater power savings.
Frequently Asked Questions
What kind of power does the HP 2920-48G Procurve Switch provide?
This switch provides IEEE 802.3at Power over Ethernet (PoE+) capabilities, delivering up to 30 W per port to connected devices.
How does this switch manage network traffic?
It features traffic prioritization (IEEE 802.1p) with eight priority levels and Layer 4 prioritization based on TCP/UDP port numbers to manage and optimize network flow.
Does the HP 2920-48G support energy efficiency?
Yes, it incorporates an energy-efficient design with an 80 PLUS Silver certified power supply to increase power savings.
What is "Auto-MDIX" and how does it benefit users?
Auto-MDIX provides automatic adjustments for straight-through or crossover cables on all 10/100 and 10/1000 ports, simplifying cable connection without needing to worry about cable types.
Can this switch help with network congestion?
Yes, it includes rate limiting to set per-port ingress maximums and per-port, per-queue minimums, along with large buffers for graceful congestion management.
Is this switch compatible with Software-Defined Networking (SDN)?
Yes, it supports OpenFlow, a key technology that enables Software-Defined Networking by separating data and control paths.
How many priority levels are available for traffic prioritization?
The switch allows for real-time traffic classification into eight distinct priority levels, which are mapped to eight different queues.
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