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EX4100-H System Overview

Learn about the key features and benefits, models, and specifications of EX4100-H switches.

EX4100-H Ethernet Switch

EX4100-H-12MP, EX4100-H-24MP, and EX4100-H-24F switches are ruggedized industrial Ethernet switches. These switches are temperature-hardened and are deployed inside indoor or outdoor enclosures with proper air flow - refer Environmental Guidelines in EX4100-H Site Guidelines and Requirements. These switches are expected to operate reliably under extended temperature ranges. The following are common deployment use cases of the EX4100-H switches:

  • Smart cities and safe cities

  • Transportation (outdoor/traffic signals)

  • Factory floors

  • Surveillance

  • Railway networks

  • Defense networks (outdoors with extended temperature ranges)

  • Gaming casinos (inside enclosures)

  • Airport terminals

For installations outdoors and in sectors such as defense, transportation, and traffic, you use a sealed cabinet for the switches. You can manage the switches from the cloud and on premises. These switches can be used for simple, efficient, and scalable network management using cloud-based hosted management applications, on-premise management tools, and APIs.

EX4100-H switches offer a strong hardware foundation with best-in-class security in combination with the simplicity of the cloud and the power of Mist AI. You can use Juniper Mist Wired Assurance to onboard, configure, and manage the EX4100-H from the cloud with minimal effort. You can also manage these switches by using the CLI or J-Web.

EX4100-H switches support Layer 2 (L2) and Layer 3 (L3) technologies. You can deploy these switches on the core, distribution, or access layers, providing a multisite network overlay.

The key benefits of EX4100-H switches are as follows:

  • Compact solution—The EX4100-H switches are modular systems and are ideal for use inside enclosures with proper airflow. These switches are fanless and come with convection cooling. These are deployed indoors or outdoors and operate reliably under extended temperature ranges. These switches provide carrier-class reliability of modular systems with the economics and flexibility of stackable platforms.

  • Virtual chassis—EX4100-H switches support Virtual Chassis technology. You can interconnect up to 10 switches to form a Virtual Chassis. You can interconnect EX4100-H switches with EX4100 and/or EX4100-F switches in a Virtual Chassis configuration.

  • High availability—EX4100-H switches provide high availability through redundant power supplies, graceful Routing Engine switchover (GRES), and non-stop bridging and routing when you deploy the switches in a Virtual Chassis configuration.

  • Mist cloud managed—EX4100-H switches are built to be cloud native. You can manage activities and features such as onboarding, fast boot-up, streaming telemetry, and fast changes (JET) from the Mist cloud. Even though the EX4100-H switches are built specifically for management in the Mist cloud, you can manage them on premises if you prefer.

  • EVPN VXLAN—EX4100-H switches can act as L2 and L3 VXLAN gateways to support a mix of legacy endpoints and newer devices. In combination with VXLAN, EVPN provides the capability to connect a multi-site enterprise customer network in an open and standards-based manner.

  • Multigigabit—Newer wave 2 and 802.11ax access points can use higher interface speeds on network switches to support higher scale and bandwidth for users and applications.

EX4100-H Switch Models

The following table provides a summary of the EX4100-H switch models. Click on each link in the table to find more information about the model.

Table 1: EX4100-H Switch Models

Multigigabit models
EX4100-H-12MP
EX4100-H-24MP
EX4100-H-24F

Virtual Chassis

There are two ways to form a Virtual Chassis on EX4100-H switches - HiGig mode and HiGig over Ethernet (HGoE) mode. Refer Understanding HiGig and HGoE Modes in a Virtual Chassis.

HGoE mode is the default Virtual Chassis mode for all EX4100-H switches. To form a Virtual Chassis between EX4100-H and EX4100 or EX4100-H and EX4100-F switches, the Virtual Chassis mode needs to be HiGig on EX4100-H or HGoE on EX4100 and/or EX4100-F. In HiGig mode, you can operate the interconnected switches as a single device and use all the VCPs as VCPs or use all of them as network ports. You cannot mix multiple types of ports within a single, logical device. But in HGoE mode, mixed mode is supported - some ports can be VCPs and some ports can be network ports.

On EX4100-H switches, a Virtual Chassis is supported only on VCPs and uplink ports and not on access ports.

Note:

On EX4100-H switches, the two 10G SFP+ dedicated VCPs on PIC 1 support both modes - HiGig and HGoE (but one at a time). Whereas, the two 10G SFP+ uplink ports on PIC 2 support only HGoE mode.
Note:

When the Virtual Chassis is in HiGig mode, uplink ports will not function.

For more information about Virtual Chassis, see Understanding EX Series Virtual Chassis.

Dry Contact Alarm

The EX4100-H has a dry contact connector on the front panel for dry contact alarms support. The alarm input contact ports can be used to generate alarms on the switch and the alarm output contact ports can be used to connect to external devices.

Table 2: Components of the Dry Contact Alarm

LEDs

Alarm Input Ports

Alarm Relay Ports

  • IN0—LED for IN0 alarm input

  • IN1 – LED for IN1 alarm input

  • OUT – LED for alarm relay ports (NO, COM, NC)

  • GND – Grounding port to connect grounding wire

  • IN0 – Alarm input

  • IN1 – Alarm input

  • NO - Normally open alarm relay port

  • COM - Common alarm relay port

  • NC - Normally closed alarm relay port

Alarm input ports

Alarm input ports are dry contact input ports connecting to security sensors such as door and window monitors. When the alarm input ports receive a signal, the alarm input is sensed and reported to the management software to take further action. If the alarm input signal exceeds the threshold value, the LEDs for the alarm inputs (IN0 and IN1) glow to indicate an alarm condition. There are two input alarm ports (0 and 1). You can configure these ports to operate and trigger an alarm condition. Remember to mandatorily connect a wire to the GND port when configuring an input alarm port or ports.

CAUTION:

The alarm input signal threshold is 5 V.

Alarm relay ports

The relay on the switch has three alarm relay ports: NO, COM, and NC. The alarm relay ports provide dry contacts to connect to external equipment, such as an audible or visual alarm that switches on or off, for example, a bell or a light. You can configure the alarm relay ports to trigger or activate based on an alarm condition in an input alarm port or a chassis alarm. An alarm condition is indicated by the LED (OUT). The alarm relay ports operate on the principles of a relay.

  • NO (normally open alarm relay port): No electric voltage under normal conditions. Under abnormal conditions, this port will have electric voltage; the COM will attach to it forming a circuit.

  • COM (common alarm relay port): Attached to the NC port under normal conditions. Under abnormal conditions, this port attaches to the NO port.

  • NC (normally closed alarm relay port): Electric voltage present under normal conditions. Under abnormal conditions, this port will not have electric voltage because the COM port will detach from it.

Configuring chassis alarm relays

The following is an example configuration of chassis relay alarms involving a Virtual Chassis with two EX4100-H switches.

  • In line 1, on FPC 0 of the Virtual Chassis, IN0 is set to trigger a major alarm (red) if an input signal that exceeds the threshold is detected.

  • In line 2, on FPC 0 of the Virtual Chassis, IN1 is set to trigger a minor alarm (yellow) if an input signal that exceeds the threshold is detected.

  • In line 3, on FPC 1 of the Virtual Chassis, IN0 is set to trigger a major alarm (red) if an input signal that exceeds the threshold is detected.

  • In line 4, on FPC 1 of the Virtual Chassis, if a major alarm is triggered by the alarm input port (IN0) of FPC1, then trigger the first alarm relay port (NO).

After setting this configuration, assume you have connected the NO alarm relay port to a buzzer. When an alarm is triggered, the buzzer produces a sound. The OUT LED indicates this alarm in a continuously glowing red pattern. This is one of the use cases of a dry contact alarm. Another use case is when the IN1 LED of FPC 0 senses an alarm signal. Because the IN1 LED of FPC 0 is set to trigger a minor alarm, this alarm condition is indicated by the IN1 LED in the continuously glowing red pattern. You can issue show chassis alarms to view this alarm on the CLI.

Note:
  • You can set the alarm relay to detect alarm conditions under normally open or normally closed configurations – but not both.

  • You cannot start using the alarm inputs and alarm relay outputs without initial configuration. Issue the show chassis craft-interface command to view the statuses of alarm inputs and alarm relay outputs. If not configured, configure the alarm inputs and alarm relay outputs – see relay

  • Issue show chassis alarms to view all alarms including any alarms generated by the alarm inputs and/or alarm relay outputs.

  • Use show chassis in edit mode to check the configured dry contact alarms.

  • When configurations are applied for dry contact alarm ports, it takes around 10 to 15 seconds for dry contact alarm LEDs to change their states. Refer Dry Contact Alarm LEDs.

  • Alarm connector fixing screws recommended torque : 2.65 Lb.in; screwdriver type: slotted/flat head 3.5 mm.

  • Alarm connector wire clamping screws recommended tightening torque: 1.77 Lb.in; screwdriver type: slotted/flat head 2.5 mm.

Power over Ethernet Ports

EX4100-H switches are available with Power over Ethernet Plus (PoE+/PoE++) capability. These switch models provide perpetual and fast PoE functionality. PoE, PoE+, and PoE++ ports provide electrical power to devices. such as IP phones, wireless access points, and security cameras, through network cables. Because the network cables provide electrical current, you do not need separate power cords for these devices.

  1. The EX4100-H-12MP switch models support up to PoE++ (90 W) per port on the downlink ports.

  2. The EX4100-H-24MP switch models support PoE++ (90 W) per port on the downlink ports.

For more information about PoE support on EX Series switches, see Understanding PoE on EX Series Switches.

Note:

IEEE 802.3bt class 4 powered devices require category 5 or higher Ethernet cables.

EX4100-H Power System

The EX4100-H switches support a mix of AC and DC PSUs. The following are the EX4100-H switch models with their compatible power systems:

  • EX4100-H-12MP switches use the external 340 W AC and/or 340 W DC PSU.

  • EX4100-H-24MP uses the FRU (field-replaceable component) 340 W AC and/or 340 W DC PSU

  • EX4100-H-24F uses the FRU (field-replaceable component) 90 W AC and/or 90 W DC PSU

Field-Replaceable Units in EX4100-H Switches

Field-replaceable units (FRUs) are components that you can replace at your site. The FRU PSUs used by the EX4100-H-12MP, EX4100-H-24MP and EX4100-H-24F switch models are FRUs providing redundant N+1 hot swappable power supply. You can remove and replace them without powering off the switch or disrupting switch functions. The FRUs in EX4100-H switches are:

  • Power supplies

  • Transceivers

Note:

If you have a Juniper J-Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/. Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.

12 V external PSU support on EX4100-H-12MP

The EX4100-H-12MP switch supports an external third-party 12 V PSU to power-on the switch. You connect the 12 V PSU to the switch using an interconnecting wire by connecting one end of the interconnecting wire to the 12v+ and 12v- output terminals of the 12 V external PSU and the other ends of the interconnecting wire to the PSU connector (PSU 0 or PSU 1) on the switch. See Connect Power to an EX4100-H-12MP Switch to read more.

Support for various feed connections

One 12 V external PSU is needed to power up the switch in a non-PoE mode. 12 V external PSU can be connected to the PSU 0 or PSU 1 slot on the switch. But the switch supports all combinations of connections to support cases where a 12 V external PSU can be connected to the switch alongside the regular Juniper PSUs.

You use operational commands namely, show chassis environment, show chassis alarms, and show chassis environment pem to view feed statuses and alarms. The switch monitors the presence of both 12V and 54V feeds in each PSU slot, ensuring you are informed about the power status and any issues through CLI commands, system log messages, SNMP traps, and telemetry sensors.

The following table demonstrates a sample feed connection configuration. No input feeds are connected to PSU 0 slot on the switch. Only 12 V feed is connected to PSU 1 slot on the switch.

Table 3: Feed Connection to PSU 0 and PSU 1

PSU 0

PSU 1

  

Feed 54 V

Feed 12 V

Feed 54 V

Feed 12 V

PSU 1 LED

0

0

0

1

Blinking Green

Issuing the show chassis alarms, and show chassis environment operational commands shows the following output for this feed combination.

Issue set chassis fpc N ignore-poe-feed command to clear the Feed 54V not connected alarm. This configuration can be added to use the switch with a 12V-only third-party PSU, which makes three changes to the system:

  • The status of the PSU in show chassis environment will change to OK.

  • The PSU 1 LED pattern changes from Blinking Green to Solid Green.

  • The alarm ‘Feed 54V not connected’ is cleared.

PSU Status LEDs on the Switch Chassis to Indicate 12 V External PSU Connection Status

The EX4100-H-12MP switch can indicate the connection status of the external 12 V PSU by way of the PSU LEDs. See PSU Status LEDs on the Switch Chassis.

Table 4: PSU Status LEDs to Indicate Connection Status of External 12 V PSU

PSU LED Label

Color

State and Description

PSU 0 or PSU 1

Green

12 V output OK (12 V external PSU is connected to the switch)

Blinking Green

Feed 54V not connected . Use set chassis fpc N ignore-poe-feed command to clear the alarm. The PSU LED pattern changes from Blinking Green to Solid Green.

Off

Status can be one of the following

  • No input supply.

  • The input cord unplugged or the input power lost, with a second PSU in parallel still with input power.

  • Power supply critical event causing a shutdown; OTP, OCP, UVP, OVP.

Mounting Options for EX4100-H Switches

The following table summarizes the mounting options for EX4100-H switch models.

Table 5: EX4100-H Mounting Options

Mounting Kit (SKU no)

Provided or orderable

Usage

Supported Models

EX4100-H-12-DRK

Orderable

DIN rail mounting

EX4100-H-12MP

EX4100-H-12-MMK

Note:

EX4100-H-MMK is not recommended to use near power substation utilities and near railway tracks.

Orderable

Magnet mount for EX4100-H-12MP

EX4100-H-12MP

EX4100-H-12-RMK

Orderable

2-post rack mount for EX4100-H-12MP

EX4100-H-12MP

EX4100-H-12-WMK

Orderable

Wall mount for EX4100-H-12MP

EX4100-H-12MP

EX4100-H-12-RM-DRK

Orderable

2-post rack mount with DIN rail for EX4100-H-12MP

EX4100-H-12MP

EX4100-H-4P-RMK

Orderable

4 post rack mounting kit with screws

EX4100-H-24MP and EX4100-H-24F

EX4100-H-4P-TL-RMK

Orderable

4 post toolless rack mounting kit

EX4100-H-24MP and EX4100-H-24F

EX4100-H-2P-RMK

Provided

Accessory kit for 2 post rack mounting

EX4100-H-24MP and EX4100-H-24F