Powered by Junos OS and Mist AI Wired Assurance, the Juniper EX4650 delivers L2/L3 switching with ultra-low latency, in a compact 1U platform. Designed for enterprise and data centre distribution or top-of-rack use, it supports dense multispeed downlinks (1/10/25 GbE), 40/100 GbE uplinks, and dual-PSUs, with flexible cooling and airflow options.
Dense multispeed interface options: 48 SFP/SFP+/SFP28 ports supporting 1/10/25GbE and 8 QSFP28 uplinks configurable as 40GbE or 100GbE. Breakout support enables additional 25GbE lanes for scale-out designs.
High-performance forwarding architecture: Up to 4.0 Tbps bidirectional switching capacity and 2,976 Mpps forwarding rate, with cut-through switching delivering latency as low as ~550 ns for time-sensitive workloads.
Robust redundancy and deployment flexibility: Dual hot-swappable AC or DC power supplies, field-replaceable fan trays, and front-to-back or back-to-front airflow options support diverse data-centre rack and cooling architectures.
Advanced fabric integration and automation: Full EVPN-VXLAN L2/L3 gateway capability, MPLS, IS-IS, BGP, and IPv6 extensions. Extensive automation support through Junos OS (Python, Ansible, Puppet, NETCONF, ZTP), with Mist AI Wired Assurance providing cloud-based telemetry, SLA insights, and guided troubleshooting.
As a trusted UK Juniper partner, we leverage decades of IT expertise and our network of Juniper-certified technicians to ensure the success of enterprise and data centre EX switch deployments.
Whether your team needs help selecting the right EX4650 model and licensing, or if they could benefit from our pre-configuration service, installation support, and ongoing maintenance, we’re here to support your organisation.
Book a free 30 minute consultation today to discuss your requirements with our experts.
Considering Juniper EX switches to strengthen network performance and resiliency? Our FAQ answers 6 common questions.
Q1: What latency and throughput performance does the EX4650 deliver?
The EX4650 achieves wire-rate performance across all ports, with a 4.0 Tbps bidirectional switching fabric and 2,976 Mpps forwarding rate. Cut-through architecture enables latency as low as ~550 nanoseconds, ensuring consistency for enterprise and data-centre traffic.
Q2: How flexible are the interface options for mixed-speed environments?
Each EX4650 provides 48 1/10/25GbE ports and 8 QSFP28 uplinks configurable as 40GbE or 100GbE. Breakout functionality allows each QSFP28 uplink to deliver 4×25GbE, offering high port density without additional hardware.
Q3: How is resiliency handled in mission-critical deployments?
The platform offers dual field-replaceable AC or DC power supplies and redundant, hot-swappable fan trays. A quad-core 2.3 GHz CPU, 16 GB DRAM, and 64 GB SSD provide robust control-plane resources for state retention and telemetry.
Q4: Which advanced protocols and fabric features are supported?
The EX4650 supports EVPN-VXLAN overlays at both Layer 2 and Layer 3 gateways, along with MPLS, BGP, IS-IS, OSPF, and IPv6 extensions. This makes it suitable for integration into modern IP fabrics and distributed data-centre designs.
Q5: What software licensing options are available?
Juniper provides Base, Premium, and Advanced licenses. Base includes L2/L3 switching, automation, and monitoring. Premium enables advanced routing and EVPN-VXLAN. Advanced adds MPLS and extended feature sets, allowing enterprises to scale securely as requirements evolve.
Q6: How does the EX4650 maintain performance during bursts and under load?
The switch incorporates 32 MB of shared packet buffer memory with intelligent buffer management and supports 10 hardware queues per port (8 unicast + 2 multicast). Combined with granular QoS (including strict priority, SDWRR, WRED, and per-queue shaping), this ensures consistent performance for latency-sensitive applications such as voice, video, and storage replication.
