• Juniper EX4300-48T switch with vibrant pink glossy fruit sticker
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Juniper

Juniper EX4300-48T | EX4300 48-Port Gigabit Switch, 4x 40G QSFP+, 350W AC

EX4300-48T

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Description

The EX4300-48T is a fixed-configuration 1U Layer 2/3 access switch from the Juniper EX4300 line. It suits campus, branch office and data centre access deployments, as well as wiring closets where rack space and power are limited. Virtual Chassis stacking allows a pay-as-you-grow approach to expansion.

It provides 48 x 10/100/1000BASE-T access ports with no PoE, plus four fixed 40GbE QSFP+ ports that are preconfigured as Virtual Chassis ports. An optional EX-UM-4X4SFP module adds four 1GbE/10GbE SFP+ uplinks. Switching capacity is 248 Gbps unidirectional (496 Gbps bidirectional) with 369 Mpps wire-speed Layer 2/3 throughput, and the 320 Gbps Virtual Chassis backplane supports up to 10 members as one logical device. This SKU has a 350 W AC power supply with front-to-back airflow and the Standard (base) feature tier.

Supported optics include GbE SFP SX/LX, 10GbE SFP+ SR, USR, LR, ER, LRM and DAC, and 40GbE QSFP+ SR4 and DAC. The chassis can stack with other EX4300 and EX4600 members and integrates with QFX5100 switches.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Virtual Chassis technology manages up to 10 EX4300 and EX4600 switches as a single device
- Interoperates with QFX5100 in a single Virtual Chassis or stack
- Hot-swappable internal power supplies and field-replaceable fans
- Front-panel LCD for bring-up, rollbacks, alarm and LED status and factory reset
- Full Layer 2 and Layer 3 feature set including RIP, OSPF, BGP, IS-IS, VRRP, VRF-Lite and BFD
- Security features including DHCP snooping, dynamic ARP inspection, IP source guard, MAC limiting and DDoS protection
- Port profiles for desktop, IP phone, wireless AP and uplink use
- Onboarding and management through Juniper Mist Cloud and Mist Wired Assurance

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Access ports: 48 x 10/100/1000BASE-T
- PoE/PoE+ ports: 0 (PoE budget 0 W)
- Fixed uplinks: 4 x 40GbE QSFP+
- Optional uplink module: EX-UM-4X4SFP (4-port 1GbE/10GbE SFP+)
- Power supply: 350 W AC, front-to-back airflow (AFO)
- Power input: autosensing 100-120 V / 200-240 V AC
- PSU bays: dual hot-swappable internal bays, minimum 1 PSU required
- Maximum inrush current: 50 A
- Switching capacity (64-byte): 248 Gbps unidirectional / 496 Gbps bidirectional
- Layer 2/Layer 3 throughput: 369 Mpps wire speed
- Virtual Chassis backplane: 320 Gbps, up to 10 members
- CPU: 1.5 GHz Dual-Core PowerPC
- DRAM: 2 GB with ECC
- Storage: 2 GB
- Maximum MAC addresses: 64,000
- Jumbo frames: 9216 bytes
- VLANs supported: 4093
- IPv4 unicast routes in hardware: 16,000 prefixes, 32,000 host routes
- Dimensions (W x H x D): 44.1 x 4.37 x 41.6 cm base unit
- Weight (1 PSU and 2 fans): 7.3 kg
- Operating temperature: 0 to 45 C
- Cooling: 2 field-replaceable fans, 37.8 dBA
- Form factor: 1U rack-mount

FAQs

Q: Does this switch need an extra licence?
A: No. This SKU is the Standard (base) tier, and the base feature set is included in the Junos OS image. Advanced and Premium Flex licences are optional extras.

Q: Does it support PoE?
A: No. The EX4300-48T is a non-PoE model with a PoE budget of 0 W, so powered devices need a separate power source or injector.

Q: How do I add 10G uplinks?
A: Fit the optional EX-UM-4X4SFP uplink module, which adds four 1GbE/10GbE SFP+ ports. It is hot-insertable, so the switch does not need to be powered down.

Q: How does stacking work on this model?
A: The four 40GbE QSFP+ ports are preconfigured as Virtual Chassis ports. Up to 10 EX4300 and EX4600 members can be joined as one logical device. A QSFP+ DAC cable for the Virtual Chassis link is ordered separately.

Q: What optics does it support?
A: GbE SFP SX/LX, 10GbE SFP+ SR, USR, LR, ER, LRM and DAC, and 40GbE QSFP+ SR4 and DAC.

Q: How does it differ from the PoE models in the EX4300 line?
A: The 48T has no PoE and a 350 W AC supply with front-to-back airflow. The PoE variants provide a PoE budget and use higher-rated power supplies.

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