The HPE Aruba CX 8325-48Y8C (JL635A) is an enterprise-class, fixed-port Layer 3 managed Ethernet switch engineered for high-density data center deployments. It combines 48 ports of 25 Gigabit Ethernet (SFP28) with 8 ports of 100 Gigabit Ethernet (QSFP28), delivering a non-blocking 6.4 Terabit-per-second switching capacity and 2000 Mpps forwarding rate. The switch supports advanced routing protocols including OSPF, BGP, and static routing, with comprehensive Layer 2 and Layer 3 feature sets. Built-in redundancy includes dual hot-swappable power supplies and fans. The 1U rack-mountable form factor integrates seamlessly into standard data center infrastructure. Key capabilities include Virtual Switching Extension (VSX) for network virtualization, VXLAN with distributed anycast gateway, EVPN support, and Aruba Network Analytics Engine for real-time monitoring. Maximum power consumption is 450W. The switch operates with ArubaOS-CX, supporting advanced security features including AES-256 encryption, role-based access control (RBAC), IP Source Guard, and Dynamic ARP Inspection. Ideal for core and aggregation layers requiring high-density 25G/100G connectivity, HPC environments, and modern cloud-native data centers.
6.4Tbps non-blocking switching capacity.
48x25G SFP28 + 8x100G QSFP28 ports.
2000 Mpps forwarding rate, 3.5µs latency.
VSX virtualization, VXLAN, EVPN support.
Dual redundant power supplies, 450W max.
AES-256 encryption, RBAC, FIPS 140-2.
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Featuring
Manufacturer part #
JL635A
Brand
HPE
Condition
New
Model
8325-48Y8C
Stacking
Virtual Switching Framework (VSF) up to 10 switches
The JL635A is a standalone enterprise switch compatible with standard data center infrastructure. It requires SFP28 and QSFP28 transceiver modules (sold separately) for port connectivity. Dual redundant power supplies and fans ensure high availability. Management is via ArubaOS-CX operating system with Ethernet, serial console, or USB interfaces. Optional VSF stacking allows up to 10 units to be managed as a single logical entity. No special hardware dependencies; integrates with standard 19-inch rack infrastructure.
HPE Aruba CX
Model: 8325 Series
Form factor: 1U Rack-mountable
Generation: Current
Standalone switch; can be stacked up to 10 units via Virtual Switching Framework (VSF) for simplified management.
Best for
Data Center Core Switching
Serves as a core switch in large-scale data centers, providing high-capacity interconnection between aggregation layers with 6.4Tbps non-blocking switching and support for thousands of routes.
Aggregation Layer Deployment
Ideal for top-of-rack (ToR) aggregation in multi-tier data center architectures, consolidating traffic from 25G server connections to 100G uplinks with low-latency forwarding.
High-Performance Computing (HPC)
Supports bandwidth-intensive HPC clusters requiring high-density 25G connectivity for compute nodes and 100G uplinks for storage and inter-cluster communication.
Cloud Infrastructure Networking
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New, certified-refreshed and OEM stock with guaranteed compatibility, backed by warranty on every part.
Enables cloud service providers to build scalable, virtualized networks using VXLAN, EVPN, and VSX capabilities for multi-tenant isolation and dynamic workload placement.
Enterprise Campus Distribution
Provides distribution-layer switching for large enterprise networks requiring advanced routing, QoS, and security features across multiple buildings or geographic locations.
Content Delivery Networks (CDN)
Supports CDN edge and core infrastructure with high-speed 25G/100G ports, advanced traffic engineering via BGP, and ECMP load balancing across multiple paths.
Frequently asked questions
What is the switching capacity and forwarding rate of the HPE JL635A?
The JL635A delivers 6.4 Terabits per second (Tbps) of non-blocking switching capacity with a forwarding rate of 2000 Mpps (million packets per second). This enables wire-speed forwarding across all 56 ports simultaneously with minimal latency of 3.5 microseconds for 64-byte FIFO packets, making it suitable for demanding data center environments.
What port configurations does the JL635A support?
The switch features 48 ports of 1/10/25 Gigabit Ethernet (SFP/SFP+/SFP28) and 8 ports of 40/100 Gigabit Ethernet (QSFP+/QSFP28). This flexible configuration supports mixed-speed deployments, allowing 25G connections to servers and 100G uplinks to core infrastructure or storage systems within the same chassis.
Does the JL635A support network virtualization and overlay technologies?
Yes, the JL635A fully supports VXLAN with distributed anycast gateway, EVPN (Ethernet VPN), and Aruba Virtual Switching Extension (VSX) for simplified network virtualization. These capabilities enable multi-tenant isolation, dynamic workload placement, and simplified network management in cloud and virtualized data center environments.
What routing protocols and advanced features are supported?
The switch supports dynamic routing via OSPF, BGP-4, and static routing, plus advanced features including ECMP (Equal-Cost Multi-Path), policy-based routing (PBR), BFD (Bidirectional Forwarding Detection), and MSTP/RSTP spanning tree. It also includes comprehensive QoS with 8 priority queues, DWRR scheduling, and DCB (Data Center Bridging) support.
What security features does the JL635A provide?
Security features include AES-256 encryption, FIPS 140-2 compliance, role-based access control (RBAC), SSH/SSH2 authentication, RADIUS and TACACS+ support, IP Source Guard, and Dynamic ARP Inspection. These protect against unauthorized access, spoofing attacks, and unauthorized device connections in enterprise networks.
What is the power consumption and cooling requirement?
Maximum power consumption is 450W with dual hot-swappable power supply units (PSUs) for redundancy. The 1U rack-mountable form factor operates in environments from 0°C to 45°C (32°F to 113°F) with 5-95% non-condensing humidity, typical for standard data center conditions.
How does the JL635A compare to competing switches in its class?
The JL635A offers higher port density of 25G connections (48 ports) compared to competitors like Cisco Nexus 9300 or Juniper QFX5110, combined with 8x100G uplinks in a single 1U chassis. Its VSX virtualization, VXLAN distributed gateway, and Aruba Network Analytics Engine provide differentiated software capabilities for modern cloud-native deployments.
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