## Product Overview ### Manufacturer and Model ? Manufacturer: HPE ? Part Number or SKU: J9981-61001 ### Device Classification ? Device Type: Managed Switch with 48 Ports ## Technical Specifications ### Physical Characteristics ? Enclosure Type: Desktop, Rack-Mountable, Wall-Mountable ? 1U ? Subtype: Gigabit Ethernet ### Port Details ? Ports: 48 x 10/100/1000 Mbps + 4 x Fast Ethernet/Gigabit SFP ### Performance Metrics ? Throughput: Up to 77.3 Mpps ? Switching Capacity: 104 Gbps ### Memory and Storage ? MAC Address Table Size: 16,000 Entries ? Jumbo Frame Support: Yes ? RAM: 128 MB SDRAM ? Flash Memory: 16 MB ? Processor: 400 MHz ## Management and Protocols ### Remote Management ? Protocols: SNMP v1, SNMP v2c, HTTPS ? Encryption Algorithm: SSL ### Features and Capabilities ? Flow Control ? Full Duplex Capability ? Layer 2 Switching ? DHCP Support ? BOOTP Support ? VLAN Support ? Auto-Uplink (Auto MDI/MDI-X) ? DOS Attack Prevention ? Port Mirroring ? SNTP Support ? Quality of Service (QoS) ? Jumbo Frames Support ? LLDP Support ## Standards and Compliance ### Compliant Standards ? IEEE 802.3 ? IEEE 802.3u ? IEEE 802.1q ? IEEE 802.3ab ? IEEE 802.1p ? IEEE 802.3x ? IEEE 802.3ad (LACP) ? IEEE 802.1ab (LLDP) ## Connectivity Options ### Interfaces ? 48 x 1000Base-T ? RJ-45 ? 4 x SFP ## Ports The HPE 1820-48G Managed Desktop Rack-Mountable switch is equipped with an impressive 48 ports, making it a highly versatile and efficient networking solution for businesses of all sizes. With this extensive number of ports, users can connect multiple devices simultaneously, ensuring seamless connectivity and enhanced productivity. ### Increased Flexibility The 48 ports on the HPE 1820-48G provide users with the flexibility to connect a wide range of devices, including computers, printers, servers, and other networking equipment. This allows businesses to build a robust and scalable network infrastructure that can adapt to their evolving needs. Whether it’s expanding the network or accommodating new devices, the ample number of ports ensures that users have sufficient connectivity options at their disposal. ### Improved Performance Having 48 ports on the HPE 1820-48G switch translates into improved overall performance. With more ports available, users can distribute network traffic more efficiently, minimizing congestion and bottlenecks. This results in faster data transfer speeds and reduced latency, enabling users to experience seamless connectivity and enhanced productivity. Whether it’s transferring large files or streaming high-definition multimedia content, the abundance of ports ensures that users can achieve optimal performance without compromising on speed or quality. ### Enhanced Network Management The HPE 1820-48G switch features advanced management capabilities that allow users to effectively monitor and control their network. With the 48 ports, administrators can easily segment the network into different VLANs (Virtual Local Area Networks), ensuring better control over network traffic and improved security. Additionally, the switch supports features such as Quality of Service (QoS) and Port Mirroring, which further enhance network management capabilities. This enables administrators to prioritize critical traffic, optimize bandwidth allocation, and troubleshoot network issues more efficiently. #### Seamless Expansion The 48 ports on the HPE 1820-48G switch provide businesses with ample room for future expansion. As the organization grows and more devices are added to the network, having a surplus of ports ensures that users can seamlessly integrate new devices without the need for additional switches or complex network reconfigurations. This scalability not only saves time and effort but also offers a cost-effective solution for businesses looking to accommodate their growing networking needs. #### Improved Network Resilience Having multiple ports on the HPE 1820-48G switch enhances network resilience by enabling link aggregation. Link aggregation, also known as port trunking, allows users to combine multiple physical connections into a single logical connection, increasing overall bandwidth and providing redundancy. In case one link fails, the traffic is automatically rerouted through the remaining active links, ensuring uninterrupted connectivity and minimizing downtime. This redundancy is particularly crucial for businesses that rely heavily on their network infrastructure to carry out critical operations or provide services to their customers. ##### Simplified Cable Management The HPE 1820-48G switch’s 48 ports contribute to simplified cable management within the network infrastructure. With a sufficient number of ports available, users can neatly organize and label their cables, reducing clutter and minimizing the risk of accidental disconnections or cable damage. This not only improves the overall aesthetics of the network setup but also makes troubleshooting and maintenance tasks more straightforward and efficient. ## Switch The HPE 1820-48G Managed Desktop Rack-Mountable switch is a versatile networking device that offers businesses a multitude of benefits. Its primary function is to connect multiple devices within a local area network (LAN) and facilitate seamless communication between them. ### Centralized Network Control As a switch, the HPE 1820-48G serves as the central point of control for network traffic. It intelligently receives incoming data packets from connected devices and forwards them to the appropriate destination, ensuring efficient and reliable communication between devices. By effectively managing network traffic, the switch prevents data collisions and congestion, resulting in improved network performance and reduced latency. ### Improved Data Security The HPE 1820-48G switch enhances data security by providing advanced features such as Access Control Lists (ACLs) and port security. ACLs allow administrators to define specific rules and policies for traffic filtering, restricting access to the network based on criteria such as IP addresses, protocols, or port numbers. Port security, on the other hand, enables users to control which devices can connect to specific ports on the switch, preventing unauthorized access to the network. #### Efficient Bandwidth Utilization The HPE 1820-48G switch optimizes bandwidth utilization by employing various technologies such as Quality of Service (QoS) and traffic prioritization. QoS allows administrators to allocate bandwidth based on the importance of specific applications or services, ensuring that critical traffic receives priority over less time-sensitive traffic. This ensures a consistent and reliable user experience for applications such as voice or video conferencing, where real-time communication is crucial. #### Network Segmentation One of the key benefits of the HPE 1820-48G switch is its ability to segment the network into different VLANs. VLANs provide logical separation within a physical network, allowing users to isolate traffic based on department, function, or security requirements. This segmentation enhances network security by limiting the scope of potential threats and unauthorized access. It also improves network performance by reducing broadcast traffic and optimizing resource allocation within each VLAN. ##### Easy Network Expansion The HPE 1820-48G switch’s scalability enables businesses to easily expand their network infrastructure as needed. Whether it’s adding new devices, connecting remote offices, or integrating additional switches, the switch’s flexibility allows for seamless expansion without disrupting existing network operations. This scalability is particularly beneficial for rapidly growing businesses or organizations that frequently experience changes in their network requirements. ## Part Number The HPE 1820-48G Managed Desktop Rack-Mountable switch is identified by its unique part number, J9981-61001. This part number plays a crucial role in accurately identifying and procuring the specific switch model, ensuring compatibility and ease of maintenance. ### Identification and Compatibility The J9981-61001 part number serves as a unique identifier for the HPE 1820-48G switch model. It enables users, IT administrators, and procurement teams to quickly and accurately identify the specific switch variant they require. This is particularly important when ordering replacement parts or expanding an existing network setup. By using the correct part number, users can ensure compatibility with their existing infrastructure and avoid any potential compatibility issues that may arise from using incorrect or incompatible components. ### Warranty and Support The J9981-61001 part number also plays a crucial role in warranty and support services. When registering the HPE 1820-48G switch for warranty, users are typically required to provide the part number as part of the registration process. The unique part number allows manufacturers and service providers to verify the authenticity of the product and determine its warranty status. In case of any technical issues or support requests, having the correct part number readily available expedites the troubleshooting process and ensures that users receive accurate assistance tailored to their specific switch model. #### Documentation and Firmware Updates The J9981-61001 part number is essential when accessing documentation and firmware updates for the HPE 1820-48G switch. Manufacturers usually provide comprehensive documentation, including user manuals, configuration guides, and technical specifications for each specific switch model. By using the correct part number, users can easily locate the relevant documentation and access valuable resources to effectively configure, manage, and troubleshoot their switch. #### Procurement and Inventory Management For businesses and organizations that manage their own network infrastructure, the J9981-61001 part number is crucial for procurement and inventory management. When ordering or procuring new switches or replacement parts, using the correct part number ensures that the desired switch variant is obtained. It also aids in maintaining accurate inventory records, making it easier to track assets, manage warranties, and plan for future network expansions or upgrades. ##### Efficient Maintenance and Troubleshooting The J9981-61001 part number simplifies maintenance and troubleshooting tasks for the HPE 1820-48G switch. In case of hardware failures or the need for component replacements, having the correct part number readily available allows users to quickly source the required parts. This minimizes downtime and ensures that the switch can be back up and running in no time. Additionally, when seeking technical support or assistance from manufacturers or service providers, providing the accurate part number helps expedite the resolution process by enabling support staff to identify the specific switch model and provide targeted guidance or replacement options.