JUNIPER EX4300-48T-DC-AFI EX4300 Series Ethernet Switches

EX4300-48T-DC-AFI Hardware Identity

EX4300-48T-DC-AFI is a Juniper EX4300 fixed-configuration Ethernet switch. Its verified hardware profile is 48 10/100/1000BASE-T access ports and four QSFP+ ports; no PoE on access ports. The complete code carries DC-powered order form, airflow-in order form. Preserve every suffix on the quote, carton and asset record.

Port and power boundary

AC or DC supply according to exact SKU. The uplink configuration is optional four-port SFP+ uplink module. Optics, optional uplink modules, cables and any separately ordered power or mounting items must be reconciled in the final bill of materials.

EX4300 architecture control

EX4300 procurement must treat chassis, power supplies, fans, uplink module and optics as one engineered assembly. Confirm which FRUs ship with the exact model and which are separate, then verify airflow labels across every fan and supply. Record built-in VCP-capable ports, optional uplink module, Junos release and Virtual Chassis role. The acceptance file must distinguish copper, fiber and multigigabit variants instead of using an EX4300 family checklist alone.

Order-form control 1

DC power acceptance requires two documented feed paths where redundancy is designed, correct protective devices, conductor sizing, polarity, grounding and terminal hardware. Measure input before connecting the switch, label each feed and test loss of the approved source. Do not install an AC supply or assume an AC cord is part of this order. Preserve the facility drawing and supply labels with the serial record.

Order-form control 2

AFI acceptance means air enters from the FRU side and exhausts through the port panel, also described as back-to-front airflow. Every installed fan and power supply must carry the matching AIR IN or AFI identity. Verify rack orientation and neighboring equipment before energizing, then record inlet temperature and photograph FRU labels. An AFO component is a blocked receiving exception.

SKU-specific acceptance

For the DC airflow-in copper model, inspect feed, airflow and fan labels as three separate acceptance items before joining a Virtual Chassis. For the DC AFI copper chassis, record two feed paths, all AIR IN labels and the rack's back-to-front thermal plan. Test a feed loss, a fan alarm and one VCP path without combining the results. Port migration begins only after power, cooling and Virtual Chassis evidence are independently approved.

Uplink plan

Map every uplink speed, optic, breakout, LAG member and peer. Optional uplink modules and transceivers must appear as separate bill-of-material lines where required.

Capacity test

Measure representative access, uplink and control-plane load after staging. Preserve errors, drops, temperature and latency rather than accepting link-up alone.

Failure domain

Define what remains online after loss of one feed, supply, fan, uplink or VC member. Test the approved failure case and retain recovery timing.

PoE load

Build a port-by-port powered-device budget with startup draw, redundancy state and spare margin. Do not equate a PoE-capable port count with enough available watts.

Virtual Chassis

Document member role, Junos release, VCP media, topology and rollback. A VC order qualifier or physical VCP does not remove software and compatibility checks.

TAA control

Keep the complete TAA-qualified order code on the quote, invoice, carton and asset record. Validate procurement eligibility with the contracting authority rather than a shortened base model.

Related Juniper EX records

• EX4300-48MP switch record
• EX4600-40F-AFO switch record
• EX2300-48MP switch record

Official Juniper evidence

EX4300 system overview and model table. Verify the current hardware guide, supported Junos release and lifecycle notice at the final design date.