CBS250-24P-4G Cisco Smart Switch PoE+ 24 Ports Manageable

Cisco CBS250-24P-4G Managed PoE+ Ethernet Switch

The Cisco CBS250-24P-4G is a robust, fully manageable PoE+ Ethernet switch designed for modern enterprise networks. With 24 Gigabit ports and 4 SFP uplinks, this switch delivers high-performance connectivity, power efficiency, and advanced network management features suitable for small to medium-sized businesses.

Device Specifications and Technical Details

• Manufacturer: Cisco
• Model Number: CBS250-24P-4G
• Device Type: Layer 3 Smart Switch with 28 Ports
• Enclosure Type: Rack-mountable
• Network Subtype: Gigabit Ethernet

Port and Interfaces

• 24 x 10/100/1000 Mbps RJ-45 PoE+ ports
• 4 x Gigabit SFP uplink slots for fiber connectivity
• 1 x Console port (Mini-USB Type B) for local management
• 1 x USB Type A port for firmware upgrades and storage
• 1 x RJ-45 Console port for alternative management access

Power Over Ethernet (PoE) Features

• Supports PoE+ standard to power connected devices
• Maximum PoE budget: 195 Watts
• Enables deployment of IP phones, cameras, and access points without additional power adapters

Performance and Capacity

• Forwarding Performance: 41.66 Mpps (64-byte packets)
• Switching Capacity: 56 Gbps
• MAC Address Table: 8,000 entries
• Buffer Capacity: 1.5 MB
• Supports Jumbo Frames up to 2 KB

VLANs, ACLs, and Routing

• Supports up to 255 VLANs for network segmentation
• ACL Rules: 512 for advanced access control
• Routing protocols: IGMPv2, IGMPv3, MLDv2, CIDR, MSTP, RSTP, STP
• Redundant instance support: 126 RPVST+ and 8 MSTP instances

Remote Management and Security

• SNMP v1, v2c, v3 for network monitoring
• RMON for performance analysis and traffic statistics
• Telnet, HTTP, HTTPS, SSH, SSH-2, SCP for secure remote management
• TFTP support for firmware updates
• Radius authentication for centralized access control

Internal Power Supply and Electrical Requirements

• Built-in internal power supply for reliable operation
• Supports AC voltage: 120/230 V at 50/60 Hz
• Energy-efficient design to reduce operational costs

Advanced Features for Enterprise Networks

• Supports Rapid Spanning Tree Protocol (RSTP) for loop prevention
• MSTP for multi-VLAN spanning tree management
• IGMP and MLD snooping for efficient multicast traffic handling
• High-density PoE+ support for powering multiple devices simultaneously

Key Advantages of Cisco CBS250-24P-4G

• Flexible rack-mountable design for easy installation
• High forwarding performance and low latency for demanding workloads
• Extensive VLAN and ACL support for secure and segmented networks
• Comprehensive remote management and monitoring capabilities
• Robust PoE+ budget to power IP devices without external adapters

Cisco CBS250-24P-4G Managed PoE+ Ethernet Switch

The Cisco CBS250-24P-4G is a robust and reliable 24-port managed Ethernet switch, designed for small to medium-sized businesses that demand scalable, secure, and efficient network solutions. Offering full Layer 2 switching capabilities with advanced Layer 3 static routing, this switch delivers superior performance, ease of management, and Power over Ethernet Plus (PoE+) support for powering devices directly through the network cables. The CBS250-24P-4G is an integral component in Cisco’s Business Switch series, providing seamless integration into existing network infrastructures while offering high-speed connectivity and intelligent management features.

24 Ports of High-Performance Connectivity

This Cisco CBS250-24P-4G switch includes 24 Gigabit Ethernet ports with PoE+ functionality, allowing direct powering of devices such as IP phones, wireless access points, and security cameras without the need for separate power adapters. The switch also provides four Gigabit SFP uplink ports to support fiber connections for long-distance network expansion, ensuring flexible deployment options and future-proof scalability. With full-duplex operation and advanced switching technology, this switch ensures consistent low-latency performance across all connected devices, making it ideal for both standard data traffic and demanding multimedia applications.

Advanced Layer 2 Switching Capabilities

The CBS250-24P-4G is equipped with full Layer 2 functionality, including support for VLANs, Spanning Tree Protocol (STP), link aggregation, and Quality of Service (QoS). VLAN support allows network administrators to segment network traffic for enhanced security and efficient bandwidth allocation. STP and its variants prevent network loops and ensure uninterrupted network availability. Link aggregation enables multiple ports to function as a single high-capacity link, enhancing redundancy and increasing overall throughput. QoS policies prioritize mission-critical traffic, such as voice and video, guaranteeing optimal performance for all network applications.

Layer 3 Static Routing and Network Efficiency

In addition to Layer 2 features, the Cisco CBS250-24P-4G supports static Layer 3 routing, providing simplified inter-VLAN routing and more efficient network traffic management. This capability allows seamless communication between different network segments without the need for an external router, reducing latency and streamlining the overall network design. Network administrators can configure static routes to direct traffic through the most efficient paths, improving performance for critical applications and enhancing overall network reliability.

Power over Ethernet Plus (PoE+) for Device Simplification

With 24 PoE+ enabled ports, this switch supports up to 195W of total PoE budget, providing ample power to connected devices such as IP telephones, wireless access points, and security cameras. PoE+ functionality eliminates the need for separate power supplies, reduces cabling complexity, and simplifies device installation, particularly in remote or hard-to-reach locations. Additionally, Cisco’s intelligent PoE management allows network administrators to monitor power usage, schedule power delivery, and prioritize critical devices to ensure consistent performance across the network.

Flexible Deployment and Scalability

The CBS250-24P-4G switch is designed to scale with growing business needs. It supports stacking via software-defined configurations, allowing multiple switches to operate as a single logical unit for simplified management. Four dedicated SFP uplink ports provide additional flexibility, enabling the integration of fiber connections for high-speed backbone links and network expansion over longer distances. The compact 1U form factor allows easy rack mounting, while the fanless design reduces noise, making it suitable for office environments where silent operation is essential.

Security and Access Control

Security is a core feature of the CBS250-24P-4G, providing advanced Layer 2 security mechanisms such as 802.1X port-based authentication, DHCP snooping, dynamic ARP inspection, and IP source guard. These features help prevent unauthorized access, IP address spoofing, and network attacks. The switch also supports Access Control Lists (ACLs) to define granular permissions for network traffic, ensuring sensitive data is protected and network integrity is maintained. Administrators can implement secure management through HTTPS, SSH, and SNMPv3, safeguarding configuration access and network monitoring operations.

Energy Efficiency and Reliability

The CBS250-24P-4G is engineered for energy-efficient operation, with support for IEEE 802.3az Energy-Efficient Ethernet (EEE) to minimize power consumption during low network activity periods. This energy-conscious design reduces operational costs while maintaining high performance. Reliability is enhanced through features such as redundant power options, fanless operation for noise-sensitive environments, and robust hardware built for continuous 24/7 operation in demanding office networks.

Applications for Small and Medium-Sized Businesses

Small and medium-sized enterprises (SMEs) can benefit from the CBS250-24P-4G switch in a variety of network scenarios. The switch is ideal for consolidating multiple office devices, providing secure PoE connectivity for VoIP phones, wireless access points, and IP cameras. It enables efficient traffic segmentation, improves bandwidth utilization, and supports high-performance applications such as video conferencing and cloud-based collaboration tools. Additionally, its Layer 3 static routing capabilities simplify network architecture and reduce the need for additional routing hardware, lowering overall deployment costs.

Integration with Cisco Ecosystem

As part of Cisco’s CBS250 series, this switch integrates seamlessly with other Cisco business networking solutions, including Cisco routers, wireless access points, and security appliances. This integration ensures unified management, consistent security policies, and end-to-end network visibility. Administrators can leverage Cisco Business Dashboard and Cisco FindIT Network Management tools to monitor, configure, and troubleshoot multiple devices from a single interface, enhancing operational efficiency and reducing administrative overhead.

Enhanced Reliability through Redundancy and QoS

The CBS250-24P-4G switch supports link redundancy through Spanning Tree Protocol enhancements and link aggregation configurations, preventing network downtime caused by hardware or connection failures. Advanced QoS prioritizes time-sensitive traffic, ensuring that critical business communications, such as VoIP calls or streaming video, maintain high performance even during periods of network congestion. These features contribute to a reliable and responsive network environment suitable for demanding business applications.

Technical Specifications and Standards Compliance

The Cisco CBS250-24P-4G adheres to industry standards, including IEEE 802.3, 802.3u, 802.3ab, 802.3z, 802.3x, and 802.1p. It supports full-duplex operation on all ports, auto-negotiation, and auto-MDI/MDIX for plug-and-play installation. The switch provides 24 Gigabit PoE+ ports with up to 30W per port and four Gigabit SFP uplink ports for fiber connectivity. Static routing capabilities support multiple VLANs with inter-VLAN routing, and the switch can handle extensive MAC address tables for large network deployments. Energy-efficient design complies with IEEE 802.3az and includes fanless operation for quiet environments.