Ethernet managed switches of the 2920 lines are part of the broad family of switches developed by HP Enterprise. In particular they are part of the offer of non modular devices with stacking, routing and POE capabilities dedicated to the SMB market.

4 different 2920 models are available differing by the number of Ethernet ports (24 or 48) and PoE (Power over Ethernet) capability.

The model we have tried is the 2920-24G (J9726A) that, as the name suggests, offers 24 Gigabit Ethernet ports (the last 4 are Dual Personality Ethernet/SFP) coupled with four 10GbE uplink ports (that can be configured in SFP+ mode or 10GBase-T).
Regarding scalability, the switch also features a Plug&Play stacking system with up to 4 units with automated failover. This configuration is reached by installing an additional 2-port module with a transfer speed up to 40Gbps into the dedicated slot on the back.

The 2920-24G is a Layer 2 and Layer 3 switch (so it also does routing) equipped with a 625MHz Tri Core ARM1176 processor, 512 SDRAM memory, 1 GByte Flash memory and 11,25 MByte dedicated to the packages buffer. Expansion is guaranteed by means of 2 slots for additional modules placed in the back of the chassis, alongside with the power supply. Unfortunately the switch has only one power supply and there's no option for a second one, even though the replacement is quite easy.

The right side of the chassis hosts cooling fans, and the flow of air thus generated is quite intense, but the noise is low once the starting phase is over. On the frontal panel there's place, in addition to the network ports, for the management port, the console ports (RJ-45 and micro USB), a standard USB port (for firmware upgrades) and a set of diagnostic leds (status, status of the modules in the slots, stacking and so forth).

By default the switch acts as a DHCP client, so it’s quite easy to access the Web interface for the configuration. The menu items, organized by category, are located in the column on the left, while the central column of the page shows the information regarding the selected configuration area. The Status voice, available in the Home tab of the menu, is particularly complete: it sums up in a single dashboard the main information of the device such as VLAN status, logs an active ports with their relative statistics.

2929 status top

The features available at the System tab are about enabling the switch stacking, configuring SNMP and upgrade the software: during our tests we have installed the latest release available at the moment (WB_15_18_0006). Upgrades can be easily performed with an upload through the Web GUI or by connecting a USB pendrive to the front port (the standard USB one, not the micro-USB which is dedicated to the console), and then starting the procedure from the command line. As it often happens on the hardware of this tier, two firmwares are installed at the same time (a main one and a secondary one as backup), to prevent failures during upgrade procedures.

2920 port 1

Port management is accessible at the Interface tab, where a complete list of the ports is available with the current configuration and a wide set of current traffic statistics. Traffic can be analyzed in real-time in order to apply a QoS (Quality of Service), which can be set at the Traffic Mgmt voice. QoS can be classified with 8 different priority levels, each one with a dedicated queue. This classification can be based upon origin ip address, port, VLAN, protocol or DiffServ (a traffic sorting mechanism for QoS based on IP networks).

VLANs can be easily configured by accessing the VLAN Mgmt menu voice, where the current main VLAN is showed and other ones can be created, up to 256 different VLANs. Ports can be singularly assigned with relative topology: Tagged, Untagged or Forbid (a port that can’t be added to a VLAN). For each virtual network, 2 configuration areas are present dedicated to IPv4 and IPv6. The switch also supports the Spanning Tree Protocol (STP allows the creation of redundant networks without incurring in loopbacks) and Multicast with IGMP.
The Security tab is for security features of the switch, starting with the setting of passwords for admins and operators; the SSL configuration can be customized, and the intrusion log register (a register of attempts of non-authorized access on selected ports) can be activated. Security can also managed on an IP and physical port basis thanks to the two specific menu items (Port Security and IP Authorization).
In the final tab of the menu some troubleshooting features can be found, such as a ping test, a configuration report, Core Dump (useful for diagnostic in case of a system crash) and also Port Mirroring activation.

The 2920-24G is a pro-tier device for sure, however when comparing it with the other solutions we’ve tried, like the 24-port managed switch Ubiquiti Edge Switch, and considering the street price (around 1500€), the main weak point is the lack of redundant power supply.



HP Enterprise

About the Author

Lorenzo Bedin

Lorenzo graduated in Telecommunication Engineering and works as freelance IT consultant, after a period of training as systems analyst. Currently he provides hardware solutions, virtualized infrastructures and websites.

banner eng

fb icon evo twitter icon evo

Word of the Day

The term Edge Computing refers, when used in the cloud-based infrastructure sphere, the set of devices and technologies that allows...


The acronym SoC (System on Chip) describes particular integrated circuit that contain a whole system inside a single physical chip:...


The acronym PtP (Point-to-Point) indicates point-to-point radio links realized with wireless technologies. Differently, PtMP links connects a single source to...


Hold Down Timer is a technique used by network routers. When a node receives notification that another router is offline...


In the field of Information Technology, the term piggybacking refers to situations where an unauthorized third party gains access to...

Read also the others...

Download of the Day


Netcat is a command line tool that can be used in both Linux and Windows environments, capable of...



Fiddler is a proxy server that can run locally to allow application debugging and control of data in...


Adapter Watch

Adapter Watch is a tool that shows a complete and detailed report about network cards. Download it here.


DNS DataView

DNS DataView is a graphical-interface software to perform DNS lookup queries from your PC using system-defined DNS, or...


SolarWinds Traceroute NG

SolarWinds Traceroute NG is a command line tool to perform advanced traceroute in Windows environment, compared to the...

All Download...

Issues Archive

  •  GURU advisor: issue 21 - May 2019

    GURU advisor: issue 21 - May 2019

  • GURU advisor: issue 20 - December 2018

    GURU advisor: issue 20 - December 2018

  • GURU advisor: issue 19 - July 2018

    GURU advisor: issue 19 - July 2018

  • GURU advisor: issue 18 - April 2018

    GURU advisor: issue 18 - April 2018

  • GURU advisor: issue 17 - January 2018

    GURU advisor: issue 17 - January 2018

  • GURU advisor: issue 16 - october 2017

    GURU advisor: issue 16 - october 2017

  • GURU advisor: issue 15 - July 2017

    GURU advisor: issue 15 - July 2017

  • GURU advisor: issue 14 - May 2017

    GURU advisor: issue 14 - May 2017

  • 1
  • 2
  • 3
  • BYOD: your devices for your firm

    The quick evolution of informatics and technologies, together with the crisis that mined financial mines, has brought to a tendency inversion: users that prefer to work with their own devices as they’re often more advanced and modern than those the companies would provide. Read More
  • A switch for datacenters: Quanta LB4M

    You don’t always have to invest thousands of euros to build an enterprise-level networking: here’s our test of the Quanta LB4M switch Read More
  • Mobile World Congress in Barcelona

    GURU advisor will be at the Mobile World Congress in Barcelona from February 22nd to 25th 2016!

    MWC is one of the biggest conventions about the worldwide mobile market, we'll be present for the whole event and we'll keep you posted with news and previews from the congress.

    Read More
  • 1