4120 Cloud Managed Switch Overview

Universal Hardware

The switch comes with a dual-persona capability, allowing you to choose your Operating System (OS). Either the Switch Engine (EXOS) or Fabric Engine (VOSS) OS can be selected at switch start-up or changed at a later time. The switch assumes the features and capabilities of the OS that is selected. Switch OS selection can also be automated with ExtremeCloud IQ so that the desired OS can be automatically loaded at switch start-up, which facilitates remote OS enablement.

Management

The switch supports connections using the RJ45 serial console port, the Ethernet management port, or the Micro-USB Type B port to view and manage the switch configuration. You can also connect to the switch using Bluetooth. For more information on switch connection methods, see Manage Your Switch. For switch connection details, see Connect to a Management Console.

After connecting to your switch, it can be flexibly configured and operated though the cloud, the network, or the command-line interface (CLI), either remotely or locally. You can access management functions on the switch using ExtremeCloud™ IQ or ExtremeCloud IQ Site Engine, or manually through a web-based GUI or generic command-line interface (CLI) client. For more information on switch configuration and operation methods, see Manage Your Switch.

Note

The CLI is limited for 4120 Series and 4220 Series devices. See the 4000 Series User Guide for your version of Switch Engine for detailed information on the available commands.

For more information about switch configuration and operation methods, see Manage Your Switch.

Note

There are also two USB 2.0 Type A ports labeled USB 1 and USB 2.

• They are located on the front panel of the switch. The USB ports can interface with USB storage devices.
• The first USB storage device inserted is mounted and can be used under the Switch Engine operating system as /usr/local/ext, or under the Fabric Engine operating system as /usb. A second inserted USB storage device is not used until the first one is removed.

Instant Onboarding

Switch onboarding to the cloud is a hands-off operation using zero touch provisioning. Unpack the switch and connect it to the network. It automatically finds a connection to the cloud and is ready to be provisioned. The ExtremeCloud Companion mobile app makes onboarding even easier with on-site cloud set-up and switch troubleshooting capabilities.

Cooling

Each switch is cooled by fixed internal switch fans. The switch supports front-to-back airflow for switch cooling. The switch fans are not responsible for cooling the removable power supply module; the power supply module has an integrated cooling fan that operates independently of the switch fan, and also provides front-to-back airflow for power supply cooling.

Power Supplies

Each switch has a fixed internal AC power supply that provides enough power for the basic power needs of the switch and a basic POE power budget. For power redundancy and a higher POE power budget, the switch also supports the addition of a hot-swappable AC power supply. The hot-swappable AC power supply has an integrated cooling fan that operates independently of the switch fans for power supply cooling and is not responsible for cooling the switch. The power supply slot for the hot-swappable AC power supply is located in the rear of the switch.

Hot-swappable power supplies are ordered separately.

See Max PoE Power Budget for more information about the PoE power budget.

For more information about the power supplies, see Power Supplies for Use with Your Switch.

Stacking Ports

Each switch comes equipped with two stacking ports, also referred to as Universal Ethernet ports. When running Switch Engine, these ports can be used in either stacking mode or Ethernet mode. When in stacking mode, up to eight systems can be stacked using qualified direct attach cables or optical transceivers.

Note

4120 Series switches can only stack with themselves.

• Stacking cables are ordered separately.
• For more information about stacking ports, see Universal Ethernet Ports.
• For information about optical modules, see the Extreme Optics website.
• For more information about stacking, see Build Stacks.

Instant Stack

Instant Stack simplifies cloud-based stack provisioning, enabling the entire switch stack to be set-up through a single push-button operation. Real-world stack information, including each switch model and their stack order, is captured and replicated in the cloud. Once set up, the entire stack is then ready to be cloud-provisioned

Note

This feature is only supported on Switch Engine.

Instant Port

Instant Port automates the adds, moves or changes across switch ports, which eliminates the need for manual port configuration. The switch automatically detects the connected device type and applies the correct port parameters. The result is significant time savings when adding or moving devices across the wired network. There is a simple cloud interface which allows Instant Port definitions of customer designated device types that can then be applied across a single switch, a stack, or even all switches in the network.

Note

This feature is only supported on Switch Engine.

Instant Secure Port

Instant Secure Port utilizes ExtremeCloud Universal ZTNA for authentication and zero-trust policy enforcement across switch ports, while providing the same add, move, and change automation features of Instant Port. It simplifies switch security by using Universal ZTNA's cloud-based security capabilities, including Radius authentication, unified visibility and reporting, as well as policy enforced locally on switch ports. Instant Secure Port delivers a consistent and frictionless security experience for any user or device connecting through the switch.

Note

• ExtremeCloud Universal ZTNA requires a separate license.
• This feature is only supported on Switch Engine.

Operating Temperatures

All and switches support an operating range from 0°C (32°F) to 50°C (122°F) up to 3000 m (10,000 ft).

Feature Licensing

A base license for the 4120 Series is the only license supported in Switch Engine. For additional Switch Engine licensing information see the Feature License Requirements for your version of the Switch Engine operating system.