CBS350-48T-4G Cisco 48-Port Ethernet Switch Twisted Pair Rack-mountable

Cisco CBS350-48T-4G 48-Port Layer 3 Managed Switch  

The Cisco CBS350-48T-4G is a high-performance Layer 3 managed Ethernet switch, designed to support scalable business networks with reliable connectivity and advanced management features. This Catalyst 350 Series switch provides modular SFP uplinks and a comprehensive set of switching capabilities, ideal for enterprise and mid-sized business environments.

General Product Information

• Manufacturer: Cisco
• Part Number: CBS350-48T-4G
• Product Line: Catalyst 350 Series
• Device Type: Managed Ethernet Switch

Technical Specifications

• Total Ports: 48 Gigabit Ethernet ports
• Port Configuration: 48 x 10/100/1000 Mbps + 4 x SFP
• Switching Capacity: 104 Gbps
• Forwarding Rate: 77.38 Mpps (64-byte packets)
• Buffer Size: 3 MB
• MAC Address Table: 16,000 entries
• Jumbo Frame Support: Up to 2 KB
• Max Stackable Units: 4

Capacity and Network Configuration

• RPVST+ Instances: 126
• MSTP Instances: 8
• VLAN Support: Up to 4,094 VLANs
• Access Control Lists (ACL): 1,024 rules

Routing and Management Features

• IGMPv2 and IGMPv3 support for multicast optimization
• Static IPv4 and IPv6 routing
• Policy-Based Routing (PBR)
• MLDv2, MLD, CIDR, MSTP, RSTP, STP compatibility

Management and Remote Access Protocols

• SNMP (v1, v2c, v3) for network monitoring
• RMON, Telnet, HTTP, and HTTPS access
• SSH, TFTP, CLI, and SCP support
• ICMP, DHCP, TACACS+, RADIUS authentication
• SSL encryption for secure communication

Advanced Switching Features

• Flow Control, BOOTP, and ARP support
• IPv6 and VLAN support for modern networks
• DoS attack prevention and Quality of Service (QoS)
• Dynamic ARP Inspection (DAI) and Broadcast Storm Control
• Link Aggregation Group (LAG) and STP Root Guard
• Multicast Storm Control and Cable Testing tools
• SmartPort technology and dual image support
• Private VLAN Edge (PVE) and LLDP-MED support

Compliance and Standards

• IEEE 802.3, 802.3u, 802.3z, 802.1D, 802.1Q
• IEEE 802.3ab, 802.1p, 802.3x, 802.3ad (LACP)
• IEEE 802.1w, 802.1x, 802.3ae, 802.1s, 802.1ab (LLDP)
• IEEE 802.3an, 802.3az, UL 60950, CSA 22.2
• FCC CFR47 Part 15 B Class A, USGv6 certified

Processor and Memory

• ARM 800 MHz processor for efficient switching
• 512 MB RAM for optimal performance
• 256 MB Flash memory for firmware and configuration storage

Indicators and Power Specifications

• Status indicators: Status, Link/Activity/Speed
• Internal power supply
• Required voltage: AC 120/230 V (50/60 Hz)
• Typical power consumption: 48.64 Watts

Environmental Parameters

• Operating temperature: 23 °F to 122 °F (-5 °C to 50 °C)
• Storage temperature: -13 °F to 158 °F (-25 °C to 70 °C)
• Operating humidity: 10 – 90% non-condensing
• Storage humidity: 10 – 90% non-condensing

Cisco CBS350-48T-4G and Performance Capabilities

The Cisco CBS350-48T-4G 48 Ports L3 Managed Switch is a high-performance, fully managed networking solution designed to enhance connectivity and optimize traffic management in medium to large business environments. As part of Cisco's CBS350 Series, this switch combines robust Layer 3 functionality with advanced switching capabilities, offering a versatile platform for high-demand networks. It supports both copper Ethernet connections and SFP modular interfaces, providing seamless scalability and flexible deployment options for diverse network topologies.

Advanced Layer 3 Routing and Network Segmentation

The CBS350-48T-4G delivers comprehensive Layer 3 routing features, enabling businesses to implement efficient network segmentation and inter-VLAN routing. This functionality allows IT administrators to define multiple VLANs, optimize traffic flow between segments, and improve overall network performance. With support for static routing, RIP, OSPF, and advanced routing protocols, this switch ensures reliable and adaptive network performance even in complex enterprise environments.

Static Routing and Dynamic Protocols

Static routing provides a simple method for directing network traffic with predictable paths, suitable for smaller, fixed network topologies. In contrast, dynamic routing protocols such as RIP and OSPF allow the switch to automatically adjust routes based on network changes, reducing administrative overhead and increasing reliability. This combination of static and dynamic routing capabilities ensures that network performance remains optimal regardless of network growth or changing demands.

Inter-VLAN Routing Efficiency

The Cisco CBS350-48T-4G supports inter-VLAN routing, allowing multiple virtual LANs to communicate efficiently. This feature is essential for organizations that require traffic isolation for security or operational purposes while maintaining seamless connectivity across departments or locations. By enabling efficient inter-VLAN routing, the switch reduces latency and enhances the overall speed of data transfer within the network infrastructure.

Scalable Connectivity with 48 Ports and SFP Modular Slots

Equipped with 48 Gigabit Ethernet ports, the CBS350-48T-4G ensures extensive connectivity for workstations, servers, IP phones, and other networked devices. Additionally, the inclusion of SFP modular uplink slots allows for fiber-optic connections, enabling long-distance data transmission without performance degradation. This modular design provides a high degree of flexibility for IT teams to expand or modify network architecture as business needs evolve.

Flexible Deployment Scenarios

The CBS350-48T-4G is suitable for a wide range of deployment scenarios, including campus environments, branch offices, and data centers. The combination of high-density ports and modular uplinks makes it ideal for aggregating traffic from multiple access switches or connecting to core networks. Whether deployed in a stackable configuration or as a standalone switch, it delivers reliable performance and simplified network management.

Support for Fiber and Copper Links

Fiber-optic SFP modules extend the reach of network connections beyond the limitations of traditional copper Ethernet, supporting distances up to several kilometers. Copper connections, on the other hand, provide cost-effective and straightforward connectivity for shorter distances. The CBS350-48T-4G allows administrators to mix and match port types according to network topology, providing maximum flexibility and investment protection.

High-Density Port Architecture

The dense 48-port layout allows for the consolidation of multiple devices onto a single switch, reducing the need for additional network equipment and simplifying cabling infrastructure. This high-density approach not only improves efficiency but also minimizes power consumption and rack space requirements, making it an ideal solution for organizations with limited physical infrastructure.

Comprehensive Security and Access Control Features

Security is a critical consideration in modern network environments, and the CBS350-48T-4G provides a wide range of features to safeguard sensitive data and ensure authorized access. With robust Layer 2 and Layer 3 security mechanisms, this switch protects against unauthorized access, network attacks, and data breaches.

Advanced Access Control and Authentication

The switch supports IEEE 802.1X network access control, which ensures that only authenticated devices can access network resources. Coupled with RADIUS and TACACS+ support, administrators can enforce strict authentication policies and monitor access activity for compliance and auditing purposes. This level of control helps prevent unauthorized users from compromising network integrity.

Port Security and Traffic Filtering

Port security features allow the CBS350-48T-4G to limit the number of devices connected to a single port, preventing unauthorized devices from joining the network. In addition, advanced traffic filtering mechanisms can restrict specific types of traffic, such as ARP spoofing, DHCP attacks, or malicious broadcasts, maintaining network stability and protecting critical business data from exploitation.

Dynamic VLAN Assignment and Segmentation

Dynamic VLAN assignment enhances security by automatically placing users and devices into appropriate network segments based on their authentication credentials. This approach simplifies administration while ensuring that sensitive data remains isolated from unauthorized access, providing both operational efficiency and enhanced security.

Quality of Service and Traffic Management Capabilities

Effective traffic management is crucial for maintaining optimal network performance, particularly in environments with high volumes of data or latency-sensitive applications. The CBS350-48T-4G incorporates sophisticated Quality of Service (QoS) mechanisms to prioritize critical traffic, reduce congestion, and ensure consistent performance for essential services.

Traffic Prioritization for Critical Applications

The switch supports multiple levels of traffic prioritization, allowing administrators to assign higher priority to latency-sensitive applications such as voice over IP, video conferencing, and real-time data analytics. By optimizing the flow of critical traffic, the CBS350-48T-4G reduces jitter, packet loss, and latency, enhancing the overall user experience.

Bandwidth Management and Traffic Shaping

Bandwidth management features enable IT teams to allocate specific amounts of bandwidth to individual ports or applications, preventing any single device or service from monopolizing network resources. Traffic shaping further smooths data transmission, minimizing bursts that could disrupt other applications and ensuring that the network operates predictably and efficiently.

Advanced Queuing Mechanisms

Advanced queuing strategies allow the switch to handle multiple types of traffic simultaneously without performance degradation. By implementing hierarchical queuing and weighted fair queuing, the CBS350-48T-4G ensures that critical business operations receive priority handling while less time-sensitive traffic is processed in a balanced manner.

Management Flexibility and Monitoring

The CBS350-48T-4G offers a comprehensive suite of management tools that simplify network administration, monitoring, and troubleshooting. These tools provide both graphical and command-line interfaces, giving IT teams the flexibility to manage the switch according to organizational preferences and expertise.

Intuitive Web-Based Interface

The web-based management interface provides an intuitive, browser-accessible platform for configuring, monitoring, and maintaining the switch. Through this interface, administrators can easily set up VLANs, manage QoS policies, monitor port status, and review logs, streamlining daily network operations and minimizing the potential for errors.

Command-Line Interface and Automation Support

For more advanced users, the Cisco CLI offers granular control over switch configuration and operation. In addition, the CBS350-48T-4G supports automation frameworks such as SNMP and REST APIs, allowing integration with network management systems and enabling programmatic monitoring and configuration. This flexibility is particularly valuable for larger networks requiring centralized management and automated workflows.

Energy Efficiency and Environmental Considerations

Energy efficiency is a key consideration in modern network deployments, and the CBS350-48T-4G addresses this through a combination of hardware design and software features. Energy-efficient components and intelligent power management reduce overall power consumption while maintaining high performance and reliability.

Intelligent Power Management

The switch includes features that automatically adjust power usage based on network activity, turning down or shutting off unused ports to conserve energy. This not only lowers operational costs but also contributes to a greener IT footprint, aligning with organizational sustainability goals.

Fan and Thermal Management

Advanced thermal management systems ensure optimal airflow and temperature control within the switch chassis. By dynamically adjusting fan speeds according to operational conditions, the CBS350-48T-4G maintains a stable environment, prolonging hardware lifespan and reducing noise levels in data center or office settings.

Compliance with Environmental Standards

The switch is designed to meet international environmental standards, including Energy Star and RoHS compliance. This ensures that organizations can deploy the CBS350-48T-4G with confidence, knowing that it adheres to industry best practices for energy efficiency and environmental responsibility.

Reliability, Redundancy, and Business Continuity

Business networks demand high availability, and the CBS350-48T-4G is engineered to provide consistent, reliable performance with minimal downtime. Advanced redundancy and failover mechanisms help maintain continuous network operations even in the event of component failure.

Redundant Power Supply Options

Optional redundant power supply modules allow for uninterrupted operation in case of a primary power failure. By providing a backup power source, the switch ensures that critical services remain operational and prevents costly disruptions to business processes.

Stacking and High Availability

The CBS350 Series supports switch stacking, enabling multiple devices to function as a single logical unit. This configuration increases network resilience and simplifies management while allowing for easy scalability. In high-availability scenarios, stacked switches provide seamless failover and load balancing, ensuring uninterrupted connectivity across the network.

Proactive Fault Detection and Diagnostics

Integrated diagnostic tools continuously monitor switch health, detecting potential hardware or software issues before they impact network performance. Proactive fault detection, combined with detailed logging and alerting capabilities, allows IT teams to respond quickly and effectively, minimizing downtime and maintaining business continuity.

Use Cases and Industry Applications

The Cisco CBS350-48T-4G is versatile enough to address a wide range of enterprise networking needs. From medium-sized corporate offices to branch locations, the switch provides the performance, security, and management features necessary for modern IT infrastructures.

Enterprise and Corporate Networks

For enterprise environments, the CBS350-48T-4G supports high-density device connectivity, efficient traffic routing, and secure segmentation, making it ideal for corporate offices with multiple departments and diverse IT requirements. Its robust Layer 3 functionality ensures seamless communication between VLANs, while QoS features prioritize critical business applications.

Campus and Educational Networks

In educational institutions, the switch provides reliable connectivity for classrooms, laboratories, and administrative offices. Its scalable architecture and modular SFP support accommodate growth in student and staff devices, while security features help protect sensitive data and enforce access control policies.

Branch Offices and Remote Locations

Branch offices benefit from the CBS350-48T-4G’s combination of flexible uplinks, VLAN segmentation, and reliable performance. The switch simplifies network deployment at remote sites and ensures seamless integration with central office networks, enabling consistent and secure connectivity across geographically distributed locations.