The Juniper Networks EX3300-48T is a fixed-configuration, 1U managed Ethernet switch designed for enterprise campus and data center access deployments. It features 48 Gigabit Ethernet ports and four dual-mode 10GbE/GbE SFP+ uplink ports, delivering 176 Gbps switching capacity and 130 Mpps throughput. The switch supports Virtual Chassis technology, enabling up to 10 units to be interconnected and managed as a single logical device with 80 Gbps maximum interconnect capacity. Hardware specifications include a 1 GHz ARM processor, 1 GB DRAM with ECC, and 1 GB Flash memory. Layer 2 capabilities include 4,096 VLAN support, 16,000 MAC address table, and comprehensive security features such as 802.1X, DHCP snooping, and dynamic ARP inspection. Layer 3 features include OSPF v2, BGP v4, VRRP, and static routing. The switch operates on Juniper Junos OS and supports dual AC power supplies with 900W maximum power budget. Front-to-back and back-to-front airflow options are available, with operating temperatures from 0°C to 40°C.
176 Gbps switching capacity with 130 Mpps wire-speed throughput
Dual hot-swap 550W AC power supplies with 900W budget
1U rack-mount with front-to-back and back-to-front airflow options
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Featuring
Manufacturer part #
EX3300-48T
Brand
Juniper
Condition
Refurbished
CPU
1 GHz processor
DRAM
1 GB with ECC
Model
EX3300-48T
Technology
Virtual Chassis technology supporting up to 10 members; store-and-forward switching engine
Diagnostics
Traffic mirroring (port and VLAN); TDR for cable break/short detection; Show and debug command statistics
Flash Memory
1 GB
Product Line
Juniper EX3300 Series
Product Type
Managed Ethernet Switch
Compatible systems
EX3300-48T is a standalone managed switch compatible with Juniper Junos OS and supports Virtual Chassis clustering with up to 10 EX3300 members
Best for
Campus Access Networks
Ideal for wiring closet deployments in enterprise campuses. The 48 Gigabit ports support high-density user connectivity, while four 10GbE uplink ports enable high-speed core network connections. Virtual Chassis capability allows scaling across multiple closets with unified management.
Data Center Access Layer
Optimized for data center deployments with front-to-back and back-to-front airflow options and 176 Gbps switching capacity. Supports 130 Mpps wire-speed throughput for demanding server-to-network traffic patterns and east-west data center communications.
Branch Office Consolidation
Supports converged data, voice, and video traffic with eight QoS queues per port and comprehensive Layer 2/3 features. Virtual Chassis interconnect capacity of 80 Gbps enables multi-site deployments with centralized management via Junos OS.
Metro Network Deployments
24-port data center models available for metro deployments. The 1U form factor and dual hot-swap power supplies ensure high availability and efficient rack space utilization in distributed network environments.
Network Virtualization
Supports Virtual Router (VRF-Lite) and up to 10 Virtual Chassis members with 4,096 VLAN support. Enables multi-tenant network segmentation and flexible network architecture for service provider and enterprise environments.
Details
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New, certified-refreshed and OEM stock with guaranteed compatibility, backed by warranty on every part.
CLI via console, telnet, SSH; LCD for Virtual Chassis configuration management
Year 2000 Compliance
Juniper Networks hardware and software products are Year 2000 compliant; Junos OS has no known time-related limitations through year 2038
Virtual Chassis Capabilities
Maximum 10 members; 4 Virtual Chassis ports; 80 Gbps maximum interconnect capacity
Storage
DRAM
1 GB with ECC
Flash Memory
1 GB
Processor
CPU
1 GHz processor
Network & Communication
Throughput
130 Mpps (Layer 2/Layer 3)
VLAN Support
4,096 VLANs; VLAN ID range 1-4,095; Jumbo frames up to 9,216 bytes
MAC Address Table
16,000 maximum MAC addresses per system
Switching Capacity
176 Gbps (maximum with 64-byte packets)
Power Consumption
Max Wattage
900W budget
Power Supplies
Dual AC power supplies (550W each); redundant hot-swap capable
Physical Characteristics
Form Factor
1U rack-mountable chassis
Mounting Type
Rack mount with front-to-back or back-to-front airflow
Total Port Density
52 ports (48 host + 4 uplink)
Environmental
Airflow Options
Front-to-back (standard EX3300-48T); Back-to-front (EX3300-48T-BF); DC power supply option available
Storage Humidity
0% to 95% (non-condensing)
Operating Humidity
10% to 90% (non-condensing)
Storage Temperature
-40°C to 70°C
Operating Temperature
0°C to 40°C
Interface/Ports
Ethernet Ports
48 x 10/100/1000BASE-T ports (host ports); 4 x dual-mode 10GbE/GbE SFP+/SFP uplink ports
Frequently asked questions
What is the maximum number of MAC addresses the EX3300-48T can learn?
The EX3300-48T supports a maximum MAC address table of 16,000 entries per system. This capacity is sufficient for most enterprise campus and data center access deployments. In Virtual Chassis configurations with multiple switches, each member maintains its own 16,000-entry table, providing scalable MAC learning across interconnected devices.
Can the EX3300-48T be used as a Layer 3 router?
Yes, the EX3300-48T supports Layer 3 routing capabilities including OSPF v2, BGP v4, VRRP, static routing, and Virtual Router (VRF-Lite). However, advanced Layer 3 features and BGP support require appropriate feature licenses. This eliminates the need for separate Layer 3 devices in many deployments, reducing costs and complexity.
How many switches can be connected in a Virtual Chassis configuration?
Up to 10 EX3300 switches can be interconnected in a Virtual Chassis configuration via four Virtual Chassis ports per switch. The maximum Virtual Chassis interconnect capacity is 80 Gbps. Multiple switches are managed as a single logical device, simplifying operations and enabling incremental capacity expansion.
What are the power consumption specifications?
The EX3300-48T includes dual AC power supplies rated at 550W each with a 900W maximum power budget. The switch supports hot-swap redundant power supplies for high availability. Back-to-front (EX3300-48T-BF) and DC power supply options are available for specific deployment requirements.
What QoS capabilities does the EX3300-48T provide?
The switch provides eight QoS queues per port, enabling traffic prioritization and differentiated service levels. This supports converged networks carrying voice, video, and data traffic simultaneously. QoS features include flexible Class of Service (CoS) with outer 802.1P marking for VLAN-based traffic prioritization.
What security features are included for network access control?
Security features include 802.1X port-based authentication with multiple supplicant support, DHCP snooping, dynamic ARP inspection, IP source guard, and proxy ARP. These capabilities protect against unauthorized network access, ARP spoofing, and DHCP attacks. RADIUS authentication is supported for centralized credential management.
What operating system does the EX3300-48T run?
The EX3300-48T runs Juniper Junos OS, a modular control plane implementation consistent across the EX Series. Junos OS provides comprehensive CLI management via console, telnet, and SSH, plus SNMP v1/v2c/v3 for remote monitoring. Configuration rollback and image rollback capabilities enable rapid recovery from configuration errors.
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