Aruba 5406R zl2 Switch

The Aruba J9821A is a modular network switch in the 5406R zl2 family that gives IT teams a straightforward path to higher capacity and easier management. Designed for campus cores, large access layers, or aggregation points, it keeps packets moving with a switching capacity of 960 Gbps and forwarding throughput of 571.4 million packets per second. That performance means busy classrooms, office floors, or production environments stay responsive even during peak traffic.

Six open module slots let you decide exactly how the chassis should be equipped. You can load it with up to 144 Gigabit Ethernet ports for high-density edge connectivity, install 48 SFP+ ports for 10 Gb links to servers, or combine modules to create the mix your site needs. If you are planning for future growth, the chassis form factor makes upgrades as simple as sliding in a new line card.

For organizations that run multiple closets or need chassis resiliency, Virtual Switching Framework support allows you to stack several 5406R zl2 units and manage them through a single IP address. This approach reduces configuration effort and provides fast failover, which is especially valuable in environments that cannot afford downtime.

The switch ships with a fan tray and a management module already installed, so basic redundancy is built in. Because the power supply is sold separately, you can choose the exact wattage and redundancy level that matches your deployment plan. At 4U tall, the chassis fits standard racks and leaves room for other gear in crowded cabinets.

• Chassis with six open module slots for custom port mixes
• Supports up to 144 1 Gb Ethernet, 48 10 Gb SFP+, or 12 40 GbE connections
• 960 Gbps switching capacity and 1,015 Gbps switch fabric speed
• Forwarding throughput of 571.4 million packets per second and latency below 1.5 microseconds at 40 GbE
• Virtual Switching Framework technology for stacking and simplified management
• Includes fan tray and management module; power supply required but not included
• Occupies 4U of rack space and mounts in standard equipment racks