Aruba J9821A

Overview

The Aruba J9821A is a modular network switch from the 5406R zl2 family designed to deliver high capacity and simplified management for campus cores, large access layers, or aggregation points. It offers a switching capacity of 960 Gbps and a forwarding throughput of 571.4 million packets per second, ensuring smooth and responsive network performance even during peak traffic periods. With six open module slots, this chassis allows flexible port configurations to meet current needs and future growth.

Key features

• Modular chassis with six open slots enables customized port configurations for diverse network requirements.
• Supports a mix of up to 144 Gigabit Ethernet ports, 48 10 Gb SFP+ ports, or 12 40 GbE connections to accommodate various device types and speeds.
• Virtual Switching Framework technology allows stacking multiple units under a single IP address, simplifying management and providing fast failover for high availability.
• Includes a fan tray and management module for built-in redundancy and reliable operation.
• Chassis form factor supports easy upgrades by sliding in new line cards, helping networks scale without replacing the entire switch.
• Compact 4U height fits standard racks while leaving space for additional equipment in crowded data centers or wiring closets.

Key specs

• Switching capacity: 960 Gbps
• Switch fabric speed: 1,015 Gbps
• Forwarding throughput: 571.4 million packets per second
• Latency: below 1.5 microseconds at 40 GbE
• Port capacity: up to 144 1 Gb Ethernet, 48 10 Gb SFP+, or 12 40 GbE connections
• Chassis size: 4U rack height
• Included components: fan tray and management module
• Power supply: sold separately to allow tailored wattage and redundancy

Connectivity and compatibility

This switch supports a wide range of network configurations thanks to its modular design. You can equip it with a combination of Gigabit Ethernet ports for high-density edge connections, 10 Gb SFP+ ports for server uplinks, or 40 GbE ports for high-speed aggregation. The Virtual Switching Framework enables seamless stacking of multiple switches, making it easier to manage large campus networks or data centers with multiple closets.

Performance and reliability

With a forwarding throughput exceeding half a billion packets per second and latency under 1.5 microseconds at 40 GbE speeds, this switch maintains low-latency, high-speed data flow essential for demanding environments. The built-in fan tray and management module provide basic redundancy, while the option to select power supplies with the desired wattage and redundancy level ensures the switch can meet specific uptime and power requirements.

Ideal uses and environments

The Aruba 5406R zl2 switch is well suited to enterprise campus cores, large access layers, and aggregation points where high port density and flexible configurations are needed. It fits well in busy classrooms, office floors, or production environments that require consistent network responsiveness during peak usage. IT teams managing multiple wiring closets will benefit from the stacking capabilities and simplified management offered by the Virtual Switching Framework.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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