QFX5241-32OD System Overview

QFX5241-32OD Switch Description

The Juniper Networks® QFX5241 Switch is a device with high port density. You can use this switch as end-of-row, leaf or spine devices in an IP fabric architecture. It is an optimal choice as shallow buffer platforms for the spine role in the data center fabric. The 32-port QFX5241 switch is available as the model QFX5241-32OD.

The QFX5241-32OD switch has AC power supply units (PSUs) and an airflow out (AFO) cooling system.

Table 1: 32-Port QFX5241 Switch: Key Specifications
Characteristics	QFX5241-32OD	Notes
Data transmission capability	800 Gbps	The switch offers up to 800 Gbps of data transmission speed through the 800-Gigabit Ethernet (GbE) ports.
Rack units (U)	1 U	The switch has chassis that occupy one rack units (1 U).
Form factor	Octal small form-factor pluggable (OSFP)—32 OSFP ports with speeds of up to 800 Gbps. 2 SFP28 ports with speeds of 10 Gbps.
Ports	32 OSFP ports (800 Gbps) 2 SFP28 ports (10 Gbps) 1 Type-C USB 3.0 port 1 RJ-45 console port 1 management port
Throughput	25.6 terabits per second (Tbps)
Processor	Intel 4-core 2.2-GHz Ice Lake D processor with 32 GB DRAM	The processor drives the control plane of the switch.
Operating system (OS)	Junos OS Evolved software	Two internal 480-GB Non-Volatile Memory Express (NVMe) solid-state drives (SSDs) store the Junos OS Evolved software image.

Figure 1: Front View of the QFX5241-32OD Switch

Figure 2: Rear View of the QFX5241-32OD AC Switch

Benefits

High capacity (25.6 Tbps) and low latency support ensures efficient handling of large data exchanges required for AI/ML workloads.
A 1-U switch with 32 ports of 800 Gbps reduces costs by minimizing space and total power utilization.
Customers save power with 800G optics over 2x400G optics. The QFX5241-32OD supports linear pluggable optics (LPO), which uses half the power of traditional optics.
Fast link failover enhances network reliability by rapidly detecting and responding to link failures, which maintains continuous operation.
Drop congestion notification improves congestion management by allowing packet trimming and metadata transmission, which minimizes data loss and latency.
EVPN-VXLAN support enables flexible network segmentation and multitenant deployments, optimizing data center design and reducing deployment complexity.
Secure boot capabilities increase security by protecting the integrity of the switch from unauthorized firmware modifications.
An automated rail-optimized design handles complex flows through Apstra.

QFX5241-32OD Hardware Component Overview

The QFX5241-32OD switches have the following variants:

QFX5241-32OD-AO—32-port switches with 800-Gbps data transmission capability, octal small form-factor pluggable (OSFP) form factor, AC PSU, airflow out (AFO) cooling design, and installation using the QFX5241-1U-4PRMK rack mount kit.

Table 2 provides an overview of the QFX5241-32OD variants. The table also provides details about the power supply units (PSUs), field-replaceable units (FRUs), and airflow out (AFO) cooling system for the switch.

Table 2: Hardware Component Overview of QFX5241-32OD
Variant	Description	Airflow	Power System	Spare Chassis
QFX5241-32OD-AO	32 OSFP ports (ports 0–31) with port speed of up to 800 Gbps 2 SFP28 ports (ports 32 and 33) with port speed of up to 10 Gbps 1 USB 3.0 port (SS) 1 RJ-45 console port (CONSOLE) 1 management (MGMT) port Install using the rack mount kit QFX5241-1U-4PRMK.	Seven hot-insertable and hot-removable fan modules with front-to-back or AFO airflow, indicated by the label AIR OUT.	Two 12-V, 2400-W AC PSUs with AFO cooling system. The PSUs are hot-insertable and hot-removable FRUs that provide 1 + 1 redundancy and load sharing.	QFX5241-32OD-CHAS

Note:

Spare chassis does not include RMK, PSUs, and fans for the QFX5241-32OD switch.

The QFX5241-32OD switches have the following spare chassis:

Table 3: QFX5241-32OD Spare Chassis Details
Chassis	Description
QFX5241-32OD-CHAS	Spare chassis without PSUs and fans for the QFX5241-32OD model

System Software

The QFX5241-32OD switch uses the Junos OS Evolved operating system. Junos OS Evolved provides several capabilities that include Layer 2 and Layer 3 switching, routing, and security services. The Junos OS Evolved software is installed on the solid-state drives (SSD) in the switch.

You can manage the switch using the Junos OS Evolved CLI, accessible through the console and out-of-band management ports on the device.

QFX5241-32OD Component Redundancy

The following hardware components provide redundancy on the QFX5241-32OD switch:

QFX5241-32OD AC PSU—QFX5241-1U-PWR-AO, the AC PSU for QFX5241-32OD, is a hot-removable and hot-insertable FRU. The PSUs offer 1+1 redundancy for the AC input voltage range of 200 V through 240 V (up to 2400 W). However, for the AC input voltage range of 100 V through 127 V (up to 1000 W), there is no redundancy support. When installing or replacing the PSU, you don't need to shut down the device or interfere with the switching process.

Note: QFX5241-32OD AC switch operates only in nonredundant mode when the AC input voltage range is 100–127 V. Any PSU or input power failure causes a system failure in nonredundant mode. Maintain a minimum system input above 200 V for full-load operation in redundant mode.

Table 4: QFX5241-32OD AC PSU Specifications
PSU	Item	Specification
QFX5241-1U-PWR-AO (for AC PSU, AFO, 1-U variant)	Maximum output power	2400 W (for input voltage of 200 V through 240 V) 1000 W (for input voltage of 100 V through 127 V)
	Maximum input power	2600 W (for input voltage of 220 V) 1100 W (for input voltage of 110 V)
	AC input current rating	15 A (for input voltage of 200 V through 240 V; 50/60 Hz) 12 A (for input voltage of 100 V through 127 V)
	AC input voltage	High input voltage range: 200 V through 240 V. Low input voltage range: 100 V through 127 V.
	Output voltage (DC)	12 V (for both high and low voltage ranges)
	AC input line frequency	50 Hz through 60 Hz

QFX5241-32OD cooling system—QFX5241-1U-FAN-O, for QFX5241-32OD, is a hot-removable and hot-insertable FRU. The cooling system consists of seven front-to-back (airflow out or AFO) fan modules with each fan module containing two rotors. The cooling system offers N+1 redundancy for the fan modules. The fan modules are hot-insertable and hot-removable field-replaceable units (FRUs).

Table 5: Cooling System Specifications
Fan Module	Description	Airflow	Fan Replacement Duration
QFX5241-1U-FAN-O	Seven 12 V fan modules. The fan modules of 40 mm x 56 mm dimension are hot-insertable and hot-removable FRUs.	Airflow out (AFO), also known as front-to-back or port-to-FRU airflow	2 minutes for ambient temperature of 104 ℉ (40 ℃)

QFX5241-32OD FRUs

Field-replaceable units (FRUs) are switch components that you can replace at your site. The QFX5241-32OD are:

Hot-insertable and hot-removable—You can remove and replace these components without powering off the switch or disrupting the switching function.
Hot-pluggable—You can remove and replace these components without powering off the switch, but the switching function is interrupted until you replace the component.

The PSUs and fan modules in the QFX5241-32OD switch are hot-insertable and hot-removable FRUs. That is, you can replace them without turning the switch off or interfering with its functionality. The FRUs such as fan modules and PSUs are installed on the FRU panel at the rear of the QFX5241-32OD chassis.

QFX5241-32OD Chassis Physical Specifications

The QFX5241-32OD chassis are rigid sheet-metal structures that house the hardware components.

Table 7: Physical Specifications of QFX5241-32OD Chassis
Variant	Height	Width	Depth	Weight
QFX5241-32OD-AO	1.72 in. (4.37 cm)	17.26 in. (43.84 cm)	23.19 in. (58.9 cm)	31.65 lb (14.36 kg) fully loaded without optics

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