ExtremeSwitching X440-G2 Series Switches

The ExtremeSwitching X440-G2 switches are cost-effective campus edge switches. They provide 12, 24, or 48 Ethernet ports that deliver high-density fast Ethernet or Gigabit Ethernet connectivity using fixed 10/100/1000BASE-T ports or 100/1000 BASE-X ports. In addition, some models offer IEEE 802.3at PoE+ ports.



An extended-temperature model, 24fx-GE4, provides 24 ports of 100Base-FX. Another extended-temperature model, 12t8fx-GE4, provides 12 ports of 10/100/1000BASE-T and eight ports of 100Base-FX.
The ExtremeSwitching X440-G2 series switches include the following base models:
  • ExtremeSwitching X440-G2-12t-10GE4 switch
  • ExtremeSwitching X440-G2-12p-10GE4 switch
  • ExtremeSwitching X440-G2-24t-10GE4 switch
  • ExtremeSwitching X440-G2-24x-10GE4 switch
  • ExtremeSwitching X440-G2-24p-10GE4 switch
  • ExtremeSwitching X440-G2-48t-10GE4 switch
  • ExtremeSwitching X440-G2-48p-10GE4 switch
  • ExtremeSwitching X440-G2-24t-10GE4-DC switch
  • ExtremeSwitching X440-G2-48t-10GE4-DC switch
  • ExtremeSwitching X440-G2-12t8fx-GE4 switch
  • ExtremeSwitching X440-G2-24fx-GE4 switch
  • ExtremeSwitching X440-G2-24t-GE4 switch

Most X440-G2 switches support both half-duplex and full-duplex communication over 10/100/1000BASE-T ports. For details, see the "Switch Ports and Slots" topics for the individual base models.

All models come equipped with four ports of SFP 1 GbE resident on either the faceplate or rear panel. On the 12-port, 24-port, and 48-port 10/100/1000 models, except for the extended-temperature models, these 1 GbE ports can be upgraded to 10 Gb SFP+ Ethernet through software licensing. The 24- and 48-port 10/100/1000 models (except the X440-G2-24t-GE4) have four 1 GbE SFP combination ports on the front panel.

ExtremeSwitching X440-G2 series switches require ExtremeXOS version 21.1.1 or later.


These switches provide comprehensive security management:
  • User policy and host integrity enforcement, and identity management
  • Universal Port Dynamic Security Profiles to provide fine granular security policies in the network
  • Threat detection and response instrumentation to react to network intrusion with CLEAR-Flow Security Rules Engine
  • Denial of Service (DoS) protection and IP security against man-in-the-middle and DoS attacks to harden the network infrastructure


Up to eight X440-G2 switches can be stacked using SummitStack-V. Each X440-G2 unit (except the extended temperature range switches) comes equipped with two stacking ports using an SFP+ interface. Standard 10 Gb Ethernet Optics and passive and active cables can be used in the SFP+ ports for stacking X440-G2s together using SummitStack-V.

ExtremeXOS supports the SummitStack-V capability using two SFP+ ports as stacking ports, enabling the use of standard cabling and optics technologies used for 10 GbE SFP+. SummitStack-V provides long-distance stacking connectivity of up to 40 km while reducing the cable complexity of implementing a stacking solution. For a list of X440-G2 ports that can be used with SummitStack-V, see X440-G2 Stacking.

On X440-G2 switches, SummitStack-V is compatible with X450-G2 and X460-G2 switches with 10 Gb uplinks and with X770, X620, and X670-G2 switches running the same version of ExtremeXOS. SummitStack-V enabled 10 GbE ports must be physically direct-connected.



The SFP+ stacking ports on the base X440-G2 switches are 1 Gb Ethernet ports, not 10 Gb Ethernet ports. The switches run a 10 Gb stacking protocol by default, but they do not run the 10 Gb Ethernet protocol without licensed entitlement. Two- and four-port licenses are available to enable the ports to run the 10 Gb Ethernet protocol.


SummitStack-V is not supported on the following extended temperature range switch models:
  • X440-G2-12t8fx-GE4
  • X440-G2-24fx-GE4
  • X440-G2-24t-GE4

Operating Temperatures

Most X440-G2 switch models support an operating range from 0°C to 50°C. The following models extend the operating range from 0°C to 60°C:
  • X440-G2-12t8fx-GE4
  • X440-G2-24fx-GE4
  • X440-G2-24t-GE4

Additional Features

For all models, a serial console port on the front panel allows you to connect a terminal and perform local management. An Ethernet management port can be used to connect the system to a parallel management network for administration. Alternatively, you can use an Ethernet cable to connect this port directly to a laptop to view and locally manage the switch configurations.

The rear panel provides an AC power input socket or DC input connector, along with a redundant power connector. The switch automatically adjusts to the supply voltage. The redundant power connector allows you to connect the switch to either a standalone external redundant power supply or the EPS-C2 external power system. When a compatible external power supply is used with the ExtremeSwitching X440-G2 switch, the internal and external power supplies are fully fault tolerant. If one power supply fails, the other power supply will provide sufficient power to operate the switch.

All X440-G2 switches support external redundant power options. For details, refer to External Power Supplies for X440-G2 Series Switches.



See the ExtremeXOS 22.6 User Guide and the ExtremeXOS 22.6 Command Reference Guide for feature-specific information about the switches and for information regarding switch configuration.