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| Manufacturer Part# | J9778A |
| Brand | HP |
| Availability | IN STOCK |
| Condition | Refurbished |
| Weight | 15 lbs |
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The HP part number J9778A designates the HP 2530-48G-PoE+ Switch. This is an enterprise-class, fully managed Layer 2 Gigabit Ethernet switch belonging to the highly reliable HPE Aruba 2530 Switch Series. It is specifically engineered to act as a high-density, secure access layer solution for small-to-medium businesses (SMBs), remote branch offices, and distributed corporate enterprise networks.Driven by a robust architectural framework, the J9778A balances high-density Gigabit copper ports with integrated Power over Ethernet Plus (PoE+) capabilities and flexible optical uplink slots. It operates with a quiet, thermally efficient fan profile, making it suitable for deployment both inside traditional data closets and out in open, sound-sensitive office environments.Note: Following Hewlett Packard's acquisition of Aruba Networks and subsequent branding restructures, this model is also widely cross-referenced under the HPE Aruba portfolio with the exact same part number.Part Number Nomenclature BreakdownCode ComponentClassificationTechnical DefinitionJ9778AHardware SKUUnique HP/HPE structural part identifier and retail ordering model code.2530Platform FamilyEntry-to-mid tier managed enterprise access switch architecture matrix.48GPort Configuration48 x Main downstream host connection ports operating at Gigabit speeds ($10/100/1000\text{ Mbps}$).PoE+Power Delivery profileSupports integrated Power over Ethernet Plus technology up to 30W per port.Port & Uplink Interface ArchitectureThe J9778A maximizes interface spacing across its 1U front panel to deliver dense edge-device aggregation along with high-capacity uplink options:Primary Downlink Access Ports: 48 x Auto-sensing 10/100/1000 Mbps RJ-45 Gigabit Ethernet copper ports. Every port features automatic speed negotiation and Auto-MDI/MDI-X crossover tuning to eliminate the need for legacy crossover cables.High-Speed Uplink Slots: 4 x Small Form-Factor Pluggable (SFP) fixed optical transceiver slots. These slots run at 1-Gbps speeds and operate independently (they are not shared/combo ports), meaning you can use all 48 copper ports and all 4 fiber SFPs simultaneously to deliver a non-blocking backhaul connection to a core distribution layer.Console Management Interface:1 x RJ-45 serial console management interface port.1 x Mini-USB Type-B console management interface port for newer terminal connectivity options.
| Feature / Category | Specification |
|---|---|
| 1. Hardware Performance & Processing FabricSwitching Capacity | 104 Gbps of non-blocking, wire-speed internal processing backplane bandwidth.Packet Forwarding Throughput: Capable of processing and moving up to 77.3 Mpps (Million Packets Per Second) at line rate.Processor Engine: ARM9E core processing unit running clocked at 800 MHz.Memory Configuration: Outfitted with 256 MB of DDR3 SDRAM paired with 128 MB of flash memory for persistent operating system dual-boot storage partitions.Packet Buffer Size: 3 MB dynamically allocated packet buffer memory pool to safely cushion data microbursts and mitigate interface drops.MAC Address Table Scale: Accommodates up to 16,000 active hardware addresses.Jumbo Frames: Supported up to 9,220 bytes for highly efficient storage-network data transfers.2. Power over Ethernet Plus (PoE+) InfrastructureStandards Compliance: Fully compliant with IEEE 802.3at (PoE+) and backward compatible with legacy IEEE 802.3af (PoE) client configurations.Total Available PoE Budget: 382 Watts of internal power distribution.Power Allocation: Flexibly delivers up to 30 Watts per physical port across individual lines. This gives the switch the capacity to simultaneously run up to 12 high-draw PoE+ devices (such as dual-radio Wi-Fi access points or pan-tilt-zoom physical security cameras) or power up to 24 standard 15.4-Watt devices (such as desktop VoIP phones), distributing its 382W pool dynamically based on real-time device discovery parameters.3. Physical, Mechanical & Electrical ProfileForm Factor Size: 1U Space-saving, low-profile rack-mountable chassis designed for standard 19-inch communication frameworks.Dimensions (W x D x H): $17.44\text{ in} \times 12.7\text{ in} \times 1.75\text{ in}$ ($44.3\text{ cm} \times 32.26\text{ cm} \times 4.45\text{ cm}$).Weight: Approximately 10.1 lbs (4.58 kg).Chassis Cooling: Built with an advanced low-noise variable speed internal fan arrangement that keeps the switch running quietly enough for deployment inside open offices or classrooms.Power Subsystem Input: Single fixed internal universal AC power module accepting standard $100\text{--}240\text{ VAC}$ grid frequencies.Key Software & Network Intelligence FeaturesThe J9778A operates on the reliable HP ProVision/ArubaOS-S software core, ensuring seamless integration with standard enterprise orchestration tools:1. Layer 2 Management & ResiliencyLoop Mitigation: Implements IEEE 802.1D Spanning Tree, IEEE 802.1w Rapid Spanning Tree Protocol (RSTP), and IEEE 802.1s Multiple Spanning Tree Protocol (MSTP) to prevent physical looping accidents.Link Aggregation (LACP): Fully supports IEEE 802.3ad Link Aggregation Control Protocol, allowing administrators to bundle the 4 fiber uplink paths into a single logical high-capacity backhaul link.VLAN Isolation: Supports up to 512 concurrent Virtual Local Area Networks using IEEE 802.1Q tagging, allowing clear network segregation for corporate devices, guest access, and IoT hardware.2. Advanced Security FrameworksIdentity Verification: Employs strict IEEE 802.1X port security boundaries, web-based authentication, and MAC-based authentication to verify device credentials before granting network permissions.Subnet Protection: Features DHCP Snooping to block rogue DHCP servers, along with Dynamic ARP Protection and IP Source Guard to shield the local network from spoofing and man-in-the-middle attacks.Access Control: Outfitted with robust Access Control Lists (ACLs) to filter traffic based on source/destination parameters, along with secure management pathways via SSHv2 and SSL/HTTPS.3. Convergence & Traffic Quality of Service (QoS)To guarantee uninterrupted delivery of real-time applications, the switch features Quality of Service (QoS) engines that read IEEE 802.1p or DiffServ (DSCP) traffic tags. It maps incoming packets into 8 distinct egress hardware queues per port, utilizing strict priority or Weighted Round Robin (WRR) scheduling to ensure that latency-sensitive Voice-over-IP (VoIP) calls and video meetings take precedence over generic background data downloads. |
| Brand | HP |
|---|
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