Cisco SG550X-48P-K9-NA 48 Ports Stackable Switch Layer 3 Refurbished

The SG550X-48P-K9-NA is a Cisco Small Business managed switch that supports 48 Gigabit Ethernet ports, with 48 of them being PoE+ (Power over Ethernet Plus) capable. It also supports Layer 3 routing capabilities and has SFP+ (small form-factor pluggable) ports for fiber connectivity. It is designed for small to medium-sized businesses that need a high-performance network switch with advanced features. This 48-port switch supports advanced features such as Quality of Service (QoS), VLANs, and security features such as access control lists (ACLs) and VPN support. It can be managed via a web interface or through a command-line interface (CLI) using a console connection or Telnet/SSH.

One standout feature of the Cisco SG550X-48P-K9-NA is its Power Over Ethernet Plus (PoE+) capability. This feature allows the switch to not only transmit data but also deliver power to connected devices such as IP cameras, VoIP phones, and wireless access points. The PoE+ functionality eliminates the need for separate power sources for these devices, simplifying the overall network infrastructure.

For businesses requiring advanced network management, the Cisco SG550X-48P-K9-NA offers Layer 3 capabilities. This means the switch can make routing decisions based on IP addresses, enhancing the efficiency of data traffic within the network. The inclusion of Layer 3 functionality empowers businesses to create segmented and optimized networks for improved performance and security.

The physical design of the Cisco SG550X-48P-K9-NA is rack-mountable, making it suitable for installation in data center racks or network cabinets. The rack-mountable form factor ensures efficient space utilization, a critical factor for businesses with limited physical space.

To accommodate high-speed connections and ensure future scalability, the Cisco SG550X-48P-K9-NA features a combo of 10 Gigabit Small Form-Factor Pluggable Plus (SFP+) ports. These ports support both traditional Gigabit Ethernet and 10 Gigabit Ethernet connections, providing flexibility in network design and facilitating the integration of high-performance devices.

The Cisco SG550X-48P-K9-NA is designed to be stackable, allowing businesses to expand their network infrastructure seamlessly. Stackable switches enable simplified management, as multiple switches can be treated as a single entity. This feature is particularly beneficial for businesses anticipating future growth and increased network demands.

The performance of a network switch is a critical factor in ensuring smooth data flow and minimizing downtime. The Cisco SG550X-48P-K9-NA excels in both performance and reliability. With its 48 high-speed ports and 1 GBPS data transfer rate, the switch can handle the data requirements of small to medium-sized businesses effectively. Additionally, Cisco is renowned for its commitment to reliability, and this switch is no exception, boasting a robust build and advanced features to ensure uninterrupted network operation.

Security is a top priority in today's interconnected world, and the Cisco SG550X-48P-K9-NA doesn't disappoint in this regard. The switch incorporates a range of security features to safeguard the network and connected devices. This includes Access Control Lists (ACLs), which allow administrators to control traffic based on defined rules, and VLAN support for network segmentation, enhancing security by isolating different parts of the network.

Network administrators will appreciate the user-friendly management interface of the Cisco SG550X-48P-K9-NA. The switch can be configured and monitored through a web-based interface, providing a straightforward and intuitive platform for managing network settings. Additionally, the switch supports industry-standard management protocols, making it compatible with various network management tools for added flexibility.

In an era where sustainability is a key concern, the Cisco SG550X-48P-K9-NA addresses energy efficiency. The switch is designed to optimize power consumption, with features such as Energy-Efficient Ethernet (EEE) and fanless operation in low-power modes. This not only reduces the environmental impact but also contributes to cost savings for businesses in terms of energy bills.

The Cisco SG550X-48P-K9-NA switch is designed to provide high performance and reliability for small to medium-sized businesses. It supports non-blocking, full-duplex operation on all ports, which allows for maximum throughput and minimal packet loss. With support for Power over Ethernet Plus (PoE+), it can provide up to 30 watts of power per port to power devices such as IP phones, wireless access points, and surveillance cameras, without the need for additional power cables.

In terms of reliability, the switch supports a variety of features to ensure the stability and availability of the network. It supports Link Aggregation Control Protocol (LACP) and Cisco EtherChannel technology, which allows for the bundling of multiple physical links to increase bandwidth and provide redundancy. The switch also supports rapid spanning tree protocol (RSTP) and multiple spanning tree protocol (MSTP) to prevent loops in the network and ensure fast recovery in case of a failure.

The model supports advanced Quality of Service (QoS) features, which allow for the prioritization of different types of traffic, such as voice and video, to ensure that critical applications have the bandwidth they need to function properly. The switch also supports advanced security features such as access control lists (ACLs) and virtual private network (VPN) support to help protect the network from unauthorized access and ensure the confidentiality and integrity of data transmitted over the network.

The Cisco SG550X-48P-K9-NA switch is compliant with some industry standards that ensure its compatibility with other networking equipment and that it meets certain requirements for functionality and performance.

Some of the key compliant standards for the model switch include:

• IEEE 802.3: This standard defines the physical layer and media access control (MAC) specifications for Ethernet, which is the most widely used local area network (LAN) technology.
• IEEE 802.3u: This standard defines the specifications for Fast Ethernet, which provides a data rate of 100Mbps over twisted pair and fiber-optic cables.
• IEEE 802.3z: This standard defines the specifications for Gigabit Ethernet, which provides a data rate of 1Gbps over twisted pair and fiber-optic cables.
• IEEE 802.3ab: This standard defines the specifications for 1000BASE-T, which provides a data rate of 1Gbps over twisted pair cables.
• IEEE 802.3af: This standard defines the specifications for Power over Ethernet (PoE), which allows devices to receive power over their Ethernet cables.
• IEEE 802.3at: This standard defines the specifications for Power over Ethernet Plus (PoE+), which allows devices to receive higher power levels over their Ethernet cables.
• IEEE 802.3x: This standard defines the specifications for full-duplex and flow control in Ethernet networks.
• IEEE 802.1D: This standard defines the specifications for the Spanning Tree Protocol (STP), which is used to prevent loops in a network and ensure that there is a single active path between two devices.
• IEEE 802.1Q: This standard defines the specifications for Virtual LANs (VLANs), which allow for the creation of multiple logical networks on a single physical network.
• IEEE 802.1p: This standard defines the specifications for Quality of Service (QoS) in LANs, which allows for the prioritization of different types of traffic.
• IEEE 802.1w: This standard defines the specifications for Rapid Spanning Tree Protocol (RSTP), which is an enhancement to the Spanning Tree Protocol (STP) that provides faster recovery in case of a failure.

• Manufacturer: Cisco
• Model Number or SKU# SG550X-48P-K9-NA
• Product Series: 550X
• Product Type: Layer 3 Switch

• Total Number of Network Ports: 48
• Uplink Port: Yes
• Modular: Yes
• Stack Port: Yes
• Port/Expansion Slot Details: 4 x 10 Gigabit Ethernet Expansion Slot
• Port/Expansion Slot Details: 48 x Gigabit Ethernet Network
• Port/Expansion Slot Details: 2 x 10 Gigabit Ethernet Uplink

• Media Type Supported: Twisted Pair
• Media Type Supported: Optical Fiber
• Forwarding performance (64-byte packet size): 130.94 Mpps
• Switching capacity: 176 Gbps

• Number of Total Expansion Slots: 4
• Expansion Slot Type: SFP+
• Shared SFP Slot: Yes
• Number of SFP+ Slots: 4

• Power Device: Internal power supply
• Voltage Required: AC 120/230 V (50/60 Hz)
• Power over Ethernet (PoE): Yes
• Power over Ethernet (PoE) power per port: 60 W
• Power Consumption Operational: 494.3 Watt
• Redundant Power Supply Supported: No
• Total Power over Ethernet (PoE) budget: 382 Watt

Processor & Memory

• RAM: 512 MB
• Flash Memory: 256 MB

Outline, the Cisco SG550X-48P-K9-NA Small Business Switch stands out as a versatile and reliable solution for businesses seeking a high-performance network infrastructure. From its PoE+ capabilities to the stackable design and advanced security features, this switch ticks all the boxes for modern networking requirements. Whether you are a small business looking to establish a robust network foundation or a growing enterprise planning for scalability.