Description
HP PROCURVE J9022A 2810-48G
Technical Specifications Model: J9022A 2810-48G Switching Type: Layer 2 Managed Gigabit Switch Port Configuration: 44 × 10/100/1000BASE-T RJ45 ports, 4 × dual-personality ports supporting RJ45 or mini-GBIC SFP fiber module Switching Capacity: 96 Gbps Throughput: 71.4 million packets per second Latency: Less than 5.4 microseconds for 64-byte FIFO packets MAC Address Table: 8000 MAC address entries Memory: 64MB SDRAM, 16MB Flash memory, 1.5MB packet buffer Power Input: 100-127VAC / 200-240VAC, 50/60Hz Power Consumption: Maximum 92W Operating Temperature: 0℃ ~ +45℃ Storage Temperature: -40℃ ~ +70℃ Relative Humidity: 15% ~ 95% non-condensing Mounting Type: 19-inch standard 1U rack mounting Dimensions: 44.2 cm × 32.26 cm × 4.32 cm Weight: 3.9 kg
Functional Features Full layer 2 managed switch function supporting IEEE802.1Q VLAN tagging, maximum 4096 VLAN IDs, supports simultaneous activation of 256 VLANs. Supports LACP link aggregation and HP static trunking for bandwidth expansion and link redundancy. Supports multiple spanning tree protocols including IEEE802.1D, IEEE802.1w RSTP and IEEE802.1s MSTP for loop prevention. Auto MDI/MDI-X function on all copper ports, no crossover cable required. Supports jumbo frame up to 9224 bytes for large data transmission optimization. Multiple management modes: console CLI, web graphical interface, SNMP network management, Telnet remote management. Port security, MAC address lock, broadcast storm control for network security protection. Quality of service QoS function supports 802.1p priority marking and traffic queue scheduling for real-time control data. Supports optional redundant external power supply module for power redundancy.
Application Scenarios Factory automation control network, industrial DCS and PLC system network, enterprise wiring closet access switch, machine room monitoring data transmission network, building automation network.
Performance Parameters 96Gbps non-blocking switching fabric ensures full wire-speed forwarding on all ports. Packet latency remains below 5.4 microseconds under 64-byte packet full load. MAC address table supports 8000 entries for large scale node access. Flash memory stably stores switch configuration and firmware after power off. All ports complete auto-negotiation of speed and duplex mode rapidly. QoS queue scheduling guarantees priority transmission for real-time industrial control packets.
Material Composition Outer housing: Cold rolled steel metal casing with black surface coating. Main PCB: FR4 multi-layer high-density network printed circuit board. Core electronic components: MIPS 264MHz embedded processor, SDRAM memory chip, flash memory chip, gigabit switching ASIC, physical layer transceiver chip. Connectors: Shielded RJ45 metal connectors, SFP mini-GBIC slots, RS232 console port. Cooling components: Built-in cooling fans. Fasteners: Steel screws and rack mounting brackets.
Structural Features Standard 1U rack metal chassis for installation in 19-inch standard equipment rack. Front panel equipped with all RJ45 ports, SFP uplink slots and LED status indicators for each port. LED indicators display port link status, speed and activity. Rear panel holds AC power inlet, redundant power supply expansion slot and ground terminal. Internal layout separates power supply circuit, switching ASIC circuit and port physical layer circuit. Built-in fans realize forced air cooling for heat dissipation. Rack mounting brackets fixed on both sides of chassis.
Working Principle After AC power input, internal power module supplies stable DC power to processor, switching ASIC and port PHY chips. Embedded processor loads firmware and startup configuration stored in flash memory. When data packet arrives at RJ45 port, PHY chip converts analog electrical signal into digital data stream. Switching ASIC looks up MAC address table, forwards packet to target port according to destination MAC address. VLAN module tags or strips VLAN tag for data frame. QoS module allocates data packet into corresponding priority queue. Spanning tree module blocks redundant link to prevent network loop. Management processor handles CLI, web and SNMP configuration commands, records port statistics and fault log.
Installation Requirements Install switch into standard 19-inch equipment rack using supplied rack mounting brackets and screws. Reserve front and rear ventilation clearance for air circulation, no blockage on air inlet and outlet. Connect AC power cable to power inlet and connect protective ground wire to chassis ground terminal. Plug Ethernet twisted pair cable or SFP fiber module into corresponding ports. Connect console cable to serial console port for initial configuration. Power on the switch, access management interface to set IP address, VLAN, trunk and spanning tree parameters. Verify port link status and data forwarding after configuration completion.
Usage Precautions Do not block fan air inlet and outlet, overheating will cause switch shutdown or hardware damage. Use shielded twisted pair cables in industrial control cabinet environment to reduce electromagnetic interference. Back up switch configuration file regularly before firmware upgrade or parameter modification. Firmware upgrade must keep continuous power supply, power interruption during upgrade damages firmware. Disconnect power supply before plugging or unplugging SFP fiber modules. Regularly clean dust accumulated on fan and air vents in dusty factory environment. Do not open metal housing without professional authorization, internal circuit contains static sensitive chips.
