Cisco SG250-08-K9 8 Ports Switch Networking
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SG250-08-K9 Cisco 8-Ports Gigabit PoE Smart Switch L3 New

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Part Number#: SG250-08-K9
List Price was: $738.46
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Short Description:
SG250-08-K9 SG250-08 Gigabit - 8 x Gigabit Ethernet Network - Manageable - Twisted Pair - 2 Layer Supported - Rack-mountable 8-Ports Switch | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

Quality and Reliability

The Cisco SG250-08-K9 is a compact, 8-port gigabit Ethernet switch that is designed for small businesses. It is a Layer 3 managed switch that offers a range of features and capabilities. Here are some key points about the quality and reliability of this switch:

  • Build quality: The SG250-08-K9 switch is built with high-quality components and has a durable metal housing that can withstand tough environments. It also has a fanless design, which makes it silent and suitable for noise-sensitive environments.
  • Performance: The SG250-08-K9 switch offers high-speed data transfer rates of up to 1 Gbps per port, with a total switching capacity of up to 16 Gbps. It also supports advanced features such as Link Aggregation Control Protocol (LACP), Virtual LANs (VLANs), Quality of Service (QoS), and more.
  • Reliability: The SG250-08-K9 switch is designed to be highly reliable, with features such as cable diagnostics, loop detection, and storm control to help prevent network downtime. It also supports redundancy features such as Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP) to ensure network stability.
  • Security: The SG250-08-K9 switch offers advanced security features such as port security, DHCP snooping, and access control lists (ACLs) to help protect your network from unauthorized access or attacks.
  • Management: The SG250-08-K9 switch can be managed through a variety of methods, including a web-based graphical user interface (GUI), Command-Line Interface (CLI), Simple Network Management Protocol (SNMP), and more. It also supports Cisco Smart Network Application (SNA) for easy deployment and management.

Maximizing Efficiency

To maximize the efficiency of the Cisco SG250-08-K9 switch, there are several steps you can take:

  • Enable Quality of Service (QoS): QoS allows you to prioritize network traffic and ensure that critical applications receive the necessary bandwidth. Use the switch's QoS settings to configure different levels of service for different types of traffic.
  • Implement VLANs: Virtual LANs (VLANs) can be used to segment your network into smaller, more manageable sub-networks. This can improve network performance and security. Use the switch's VLAN settings to create VLANs and assign switch ports to specific VLANs.
  • Enable Link Aggregation Control Protocol (LACP): LACP allows you to combine multiple switch ports into a single logical port. This can increase bandwidth and provide redundancy in case of a port failure. Use the switch's LACP settings to configure link aggregation.
  • Monitor network performance: Use the switch's performance monitoring tools to keep track of network performance and identify potential bottlenecks. The switch supports Simple Network Management Protocol (SNMP) for network monitoring.
  • Update firmware: Keep the switch's firmware up-to-date to ensure security and performance. Check for firmware updates on the Cisco website and download and install updates as needed.
  • Configure security settings: Use the switch's security settings to protect your network from unauthorized access or attacks. Configure port security, access control lists (ACLs), and other security features as needed.
  • Use management tools: Use the switch's web-based graphical user interface (GUI), Command-Line Interface (CLI), Simple Network Management Protocol (SNMP), and Cisco Smart Network Application (SNA) to manage and configure the switch as needed.

Connectivity and Expansion

The Cisco SG250-08-K9 switch is designed to provide connectivity and expansion options for small businesses. Here are some key points about the connectivity and expansion capabilities of this switch:

  • Port configuration: The SG250-08-K9 switch features 8 gigabit Ethernet ports, all of which are capable of providing PoE (Power over Ethernet) to connected devices. This allows you to power devices such as IP phones, wireless access points, and security cameras directly from the switch.
  • Expansion options: The SG250-08-K9 switch supports several expansion options, including Link Aggregation Control Protocol (LACP) for combining multiple switch ports into a single logical port, and Virtual LANs (VLANs) for segmenting your network into smaller, more manageable sub-networks.
  • Management interfaces: The SG250-08-K9 switch can be managed through a variety of interfaces, including a web-based graphical user interface (GUI), Command-Line Interface (CLI), Simple Network Management Protocol (SNMP), and Cisco Smart Network Application (SNA). This allows you to configure and manage the switch according to your needs and preferences.
  • Redundancy features: The SG250-08-K9 switch supports redundancy features such as Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP) to ensure network stability and prevent loops in the network.
  • PoE budget: The SG250-08-K9 switch has a maximum PoE budget of 62 watts, which allows you to power multiple devices simultaneously. However, it's important to ensure that the total power consumption of connected devices does not exceed the switch's PoE budget.

Detail Features about Cisco SG250-08-K9

  • Manufacturer: Cisco
  • Model Number or SKU# SG250-08-K9
  • Product Series: 250
  • Product Model: SG250-08
  • Product Name: SG250-08 8-Port Gigabit Smart Switch
  • Product Type: Ethernet Switch

Interfaces/Ports of Smart Switch

Media & Performance of Gigabit Ethernet Switch 250 Series

  • Media Type Supported: Twisted Pair
  • Ethernet Technology: Gigabit Ethernet
  • Network Technology: 1000Base-X

Network & Communication of 8 Ports Switch

  • Layer Supported: 2
  • Management & Protocols
  • Manageable: Yes

Power Description

  • Input Voltage: 110 V AC
  • Input Voltage: 220 V AC
  • Power Source: Power Supply
  • Redundant Power Supply Supported: No

Weight & Dimensions of L3 Managed Switch

  • Form Factor: Rack-mountable
  • Height: 1.2 Inch
  • Width: 6.3 Inch
  • Depth: 5 Inch
  • Weight (Approximate): 1.19 LBS


  • Package Contents:
  • SG250-08 8-Port Gigabit Smart Switch
  • Power Cord
  • Mounting Kit
  • Quick Start Guide

Different Types of Switches

Networking switches vary widely depending on the number of devices they can support, network bandwidth/speed, and form factor. Switches for small offices will have anything between 4 and 8 ports and can fit on a desk. For larger office network implementation, switches may have 24 ports, 48 ports, 96 ports, and 128 ports and are rack-mountable between 1U and 4U. Switches come in different types depending on the network speed and tasks they support. These include 40/100 Gbps, 10 Gigabit (up to 10000 Mbps), Gigabit Ethernet (up to 1000 Mbps), Power over Ethernet, and Fast Ethernet (10/100 Mbps).

Unmanaged Switches

The unmanaged switches offer fixed configurations on a plug-and-play basis. It is the most basic switch and there are a few choices in the market. These switches are affordable, but the basic features make them inappropriate for enterprise applications.

Managed Switches

The number of features and level of functionality improves with managed switches, making them ideal for enterprise and business applications. These switches are built with the command-line interface for ease of configuration. Equally, they support SNMP agents that come in handy when troubleshooting network issues.

The security on managed switches is better and will protect different types of traffic. Other features include support for virtual LANs, IP routing, and quality of service settings. Managed switches are more expensive compared to all other types of switches.

Smart Switches

Smart switches refer to switches that possess more features than those unmanaged switches but do not have the full features of managed switches. Smart switches are more cost-effective than managed switches.

Some of the limitations of the smart switches are a lack of telnet access support, Web GUIs, and a lack of many features for VLANs. They are affordable compared to a fully managed switch and are suitable for a smaller computer network.

Modular Switches

Modular switches allow the addition of expansion modules as the network expands. The expansion modules allow for more networked devices but are application-specific. They may include wireless access points, firewalls, or network analysis tools. The flexibility of a modular networking switch comes at a higher cost.


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