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Juniper

Juniper EX4100-48T-AFI | EX4100 48-Port Gigabit Switch, 4x 10G SFP+, 4x 25G SFP28

EX4100-48T-AFI

Stock Status: Enquire

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Description

The Juniper EX4100-48T-AFI is a cloud-managed Layer 3 access switch designed for enterprise campus, branch, and data center top-of-rack deployments. It delivers 48 ports of Gigabit Ethernet connectivity with 4x 10G SFP+ uplinks and 4x 25G SFP28 stacking/uplink ports for high-speed backbone connectivity and Virtual Chassis formation. With non-blocking 188 Gbps switching capacity, 279 Mpps forwarding performance, and integration with Juniper Mist AI for simplified cloud management, the EX4100-48T-AFI provides secure, scalable access layer switching for modern networks.

Features

Cloud-native management with Juniper Mist Wired Assurance and Mist AI
- Marvis Virtual Network Assistant for automated troubleshooting and recommendations
- Zero Touch Provisioning (ZTP) for automated deployment
- EVPN-VXLAN support to the access layer for modern fabric architectures
- Standards-based microsegmentation using Group-Based Policies (GBP)
- MACsec AES-256 switch-to-switch encryption
- 802.1X port-based network access control
- Dynamic VLAN assignment and guest VLAN support
- DHCP snooping, Dynamic ARP Inspection (DAI), and IP Source Guard
- DDoS protection for control plane
- Flow-based telemetry with Junos Telemetry Interface (JTI) for real-time monitoring
- Link Aggregation (IEEE 802.3ad / LACP) with up to 64 aggregate groups
- Spanning Tree Protocol (STP, RSTP, MSTP) and BPDU protection
- IGMP v1/v2/v3 snooping and multicast VLAN registration (MVR)
- Quality of Service (QoS) with 8 hardware queues per port and IEEE 802.1p CoS
- IPv4 and IPv6 dual-stack support with full feature parity
- Virtual Router Redundancy Protocol (VRRP) for gateway redundancy
- Bidirectional Forwarding Detection (BFD) for fast failure detection
- Port mirroring and RSPAN for traffic analysis
- RESTful API, NETCONF, and Ansible support for automation
- Redundant, hot-swappable power supplies and field-replaceable fan modules

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

48x 10/100/1000Base-T Gigabit Ethernet ports
- 4x 1/10G SFP+ uplink ports
- 4x 10/25G SFP28 stacking/uplink ports
- Switching capacity: 188 Gbps (unidirectional) / 376 Gbps (bidirectional)
- Forwarding rate: 279 Mpps (Layer 2/Layer 3)
- Layer 3 switching with full IP routing support
- Non-blocking architecture
- 64,000 MAC address capacity
- Jumbo frame support: 9,216 bytes
- Virtual Chassis support: up to 10 units
- Management: Juniper Mist Cloud, CLI, SNMP, NETCONF, REST API
- Form factor: 1U rackmount, half-depth design
- Dimensions: 17.36 x 1.72 x 15.05 in (44.1 x 4.37 x 38.24 cm) with PSU
- Weight: 10 lb (4.54 kg) without PSU
- Power supply: 150W AC AFI (Airflow In) PSU included, dual redundant hot-swappable PSUs supported
- Airflow: Back-to-front (AFI)
- Redundant, field-replaceable fan modules
- Operating temperature: 32°F to 113°F (0°C to 45°C)
- TAA Compliant

FAQs

Q: What is the difference between the SFP+ and SFP28 ports on the EX4100-48T-AFI?
A: The 4x SFP+ ports support 1G and 10G speeds for uplink connectivity, while the 4x SFP28 ports support 10G and 25G speeds and are designed primarily for Virtual Chassis stacking or can be reconfigured as high-speed uplinks. SFP28 ports offer higher bandwidth for inter-switch connectivity when building scalable Virtual Chassis architectures.

Q: Can the EX4100-48T-AFI be managed without Juniper Mist cloud?
A: While the EX4100 series is designed and optimized for Juniper Mist cloud management with Wired Assurance, it can also be managed through traditional methods including CLI, SNMP, and NETCONF. However, cloud management unlocks the full potential of Mist AI-driven operations, Zero Touch Provisioning, and Marvis Virtual Network Assistant.

Q: How many EX4100 switches can be stacked together using Virtual Chassis?
A: Up to 10 EX4100 switches can be stacked into a single logical Virtual Chassis using the 25G SFP28 ports. The Virtual Chassis operates as a single management entity with a unified configuration and provides 200 Gbps backplane interconnect bandwidth. Only homogeneous stacking is supported, meaning all switches in the Virtual Chassis must be EX4100 models.

Q: What Layer 3 routing protocols does the EX4100-48T-AFI support?
A: The EX4100-48T-AFI supports a comprehensive suite of Layer 3 protocols including static routing, RIPv1/v2, OSPF v1/v2/v3, BGP, IS-IS, and policy-based routing. It also supports EVPN-VXLAN for modern fabric architectures, enabling consistent segmentation and scalable campus network designs.

Q: What does AFI mean in the model number EX4100-48T-AFI?
A: AFI stands for Airflow In, indicating that this model has back-to-front airflow (air enters from the rear and exhausts out the front). This is important for data center hot aisle/cold aisle deployments. The switch ships with a 150W AC AFI power supply that matches this airflow direction.

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