Cisco CBS350-24T-4X Full English Product Description

1. Short Sales Title (For Quotation & E-commerce Listing)

Cisco CBS350-24T-4X Business 350 Series 24-Port Gigabit Non-PoE Fully Managed Layer 3 Switch, Global Standard Version, 4 Dedicated 10G SFP+ Uplink Slots, Dual-Stack IPv4/IPv6 Dynamic Routing, True Stackable, 1RU Rackmount Mid-Density 10G Uplink Data Aggregation Switch

2. Official Product Overview

The Cisco CBS350-24T-4X is a mid-density non-PoE fully managed non-blocking Layer 3 switch in Cisco Business 350 global product portfolio. The suffix 4X stands for four dedicated 10-Gigabit SFP+ uplink slots (10G high-speed fiber uplinks), clearly differentiated from 4G models equipped with only 1G SFP uplinks. Designed for small-to-medium enterprise access layers, campus building aggregation switches, retail headquarters and bandwidth-heavy office environments without PoE-powered endpoints, it delivers high-speed uplink capacity for multi-link 10G fiber backbone, NAS storage aggregation and high-volume surveillance backhaul traffic.

Compared with entry-level CBS250 smart switches, the CBS350 provides full enterprise-grade managed features: dynamic Layer 3 routing, true stacking, comprehensive anti-spoofing security suite, sFlow traffic analytics and advanced multicast control. This copper-only access switch optimizes pure data connectivity for office PCs, workstations, high-performance NAS arrays, POS terminals and separately powered Wi-Fi 6/6E wireless access points, supporting high-bandwidth 10G fiber uplink aggregation via four standalone SFP+ slots.

It features 24×10/100/1000BASE-T RJ45 data ports plus 4 independent dedicated 10G SFP+ uplink slots, offering 28 total Gigabit Ethernet interfaces plus non-blocking 10G uplink bandwidth for redundant cross-building or cross-branch high-speed fiber interconnection. Powered by high-performance ARM processor with 512MB DRAM and 256MB flash memory, it delivers 128 Gbps non-blocking switching capacity and 95.23 Mpps wire-speed forwarding rate for 64-byte frames, equipped with a 1.5MB shared dynamic packet buffer to eliminate congestion under concurrent bulk file transfers, multi-stream 4K video and large-scale surveillance backhaul traffic. Optimized thermal design ensures stable 24/7 rack deployment in offices, educational facilities and retail server rooms.

3. Port & Hardware Specifications

24 × 10/100/1000Mbps RJ45 data-only ports (No PoE power support)
4 × dedicated 10G SFP+ uplink slots (fiber-only non-combo design, 4X = four 10G uplink ports, distinct from 4G 1G SFP models)
Compatible Cisco SFP/SFP+ transceivers: MGBSX1/MGBLX1/MGBLH1 Gigabit SFP, SFP-10G-SR, SFP-10G-LR, SFP-10G-LX single/multi-mode 10G fiber modules
Internal universal AC power supply: 100–240V 50/60Hz global standard power cord
Optimized thermal cooling design for continuous 1RU rack operation
Switching Capacity: 128 Gbps Non-Blocking
Forwarding Rate (64-byte packets): 95.23 Mpps
Shared Packet Buffer: 1.5 MB
MAC Address Table: 16K entries; Jumbo Frame support up to 9000-byte MTU
Dual console ports: RJ45 serial console + mini USB port for offline local CLI configuration
Front-panel USB Type-A port for offline config backup & firmware upgrade
True stacking capability: stack up to 4 CBS350 series switches under single IP unified management; cross-stack LAG, VLAN, QoS and port mirroring fully supported
Form Factor: 1RU standard rackmount chassis, support rack mount, wall mount and desktop placement
Dimensions: 445 × 240 × 44 mm (17.5 × 9.45 × 1.73 inches)
Weight: 2.08 kg (4.59 lbs)

4. Comprehensive Layer 2 Switching Functions

Up to 4096 IEEE 802.1Q tagged VLANs, port-based VLAN, voice VLAN, guest VLAN, private VLAN, dedicated management VLAN
8 priority egress queues with Strict Priority / WRR / SPQ QoS scheduling to prioritize VoIP, surveillance video and business data traffic
IEEE 802.3ad LACP link aggregation, multiple LAG groups for bandwidth expansion & link redundancy, cross-stack LAG support
IGMP Snooping v1/v2/v3 with built-in IGMP Querier, supporting up to 1024 multicast groups for IPTV and IP video surveillance
LLDP & LLDP-MED automatic endpoint discovery for IP phones, cameras and wireless APs
Port mirroring, VLAN mirroring, RSPAN remote mirroring, RSTP/MSTP/PVST+ spanning tree, BPDU Guard, Root Guard, Loop Guard
Broadcast/multicast/unicast storm control to prevent network flooding failures
Enterprise anti-spoofing toolkit: DHCP Snooping, Dynamic ARP Inspection (DAI), IP Source Guard, static IP/MAC/Port Binding
sFlow traffic monitoring for real-time flow-level visibility and 10G uplink bandwidth troubleshooting

5. Advanced Dual-Stack Dynamic Layer 3 Routing

Far exceeding static-only routing on CBS250 smart switches, CBS350 supports full wire-speed Layer 3 forwarding:

Dynamic routing protocol: RIPv2 for IPv4
Up to 990 IPv4 static routes, 990 IPv6 static routes, 128 Layer 3 VLAN interfaces
Native dual-stack IPv4 & IPv6 wire-speed forwarding, CIDR aggregation, full IPv6 first-hop security (ND Inspection, RA Guard)
Built-in IPv4 DHCP Server & DHCP Relay with Option 82, UDP relay functionality
Policy-Based Routing (PBR) for flexible traffic steering across segmented workgroups
Direct inter-VLAN routing without external routers to reduce core gateway latency and bandwidth load for high-volume 10G backbone traffic

6. Enterprise-Grade Multi-Layer Security Suite

IEEE 802.1X port-based authentication with RADIUS/TACACS+ centralized access control, web-based authentication
Port security, static/dynamic MAC address binding, automatic port shutdown for unauthorized terminals
Comprehensive DoS attack suppression, hardware accelerated L2-L4 ACL traffic filtering
Encrypted management channels: HTTPS web GUI, SSH multi-privilege CLI, SCP file transfer, SNMPv3 secure remote monitoring
Persistent syslog event logging, built-in cable diagnostic tools, mandatory password complexity policy
Independent guest network isolation, Private VLAN Edge (PVE) for client separation
Secure boot, encrypted configuration file storage, IPv6 ND Inspection & RA Guard to block IPv6 fiber spoofing attacks

7. Energy-Saving Green Technologies

IEEE 802.3az Energy Efficient Ethernet (EEE): auto power reduction for idle Ethernet/SFP+ links
Dynamic power tuning based on cable length to cut unnecessary power consumption
Port LED dimming or full shutdown mode for unmanned fiber wiring closets
Low-power optimized hardware design with minimal heat generation and extended service lifespan

8. Multi-Mode Local & Remote Management

Intuitive graphical web management interface (HTTP/HTTPS) with basic & advanced operation modes
Dual offline local & remote console access: serial RJ45 + mini USB port for offline CLI configuration
SSH secure remote command line management with multi-user privilege levels (1 / 7 / 15)
SNMP v1/v2c/v3 compatible with third-party network monitoring platforms, native sFlow support
TFTP/SCP/offline USB firmware upgrade, dual firmware images for reliable zero-downtime upgrades
SNTP time synchronization, ping & traceroute diagnostic tools, Smartport auto-provisioning templates
Single IP stacking management for centralized batch control of up to 4 stacked CBS350 switches
Fully compatible with Cisco Business Dashboard & Cisco Business Mobile App for unified topology visualization and zero-touch deployment of 10G fiber networks

9. Physical & Environmental Parameters

Operating Temperature: -5°C to 50°C; Storage Temperature: -25°C to 70°C
Operating Humidity: 10%–90% non-condensing relative humidity
Global compliance standards: CE, RoHS, UL, FCC Class A
MTBF: 1,720,000+ hours at 25°C ambient temperature
Warranty: Cisco Limited Lifetime Hardware Warranty

10. Typical Deployment Scenarios

Medium enterprise access aggregation switch with 10G SFP+ uplinks to core layer for mass office PCs and storage servers
Global multi-building campus aggregation switch for long-distance high-speed 10G fiber interconnection between buildings
Retail headquarters core data switch for dozens of POS terminals and separately powered Wi-Fi coverage
High-bandwidth surveillance aggregation switch backhauling multi-camera streams via 10G fiber uplinks
Stackable multi-switch scalable SMB network leveraging true stacking and dynamic Layer 3 routing with 10G high-speed backbone uplinks

11. Standard Package Contents

1 × Cisco CBS350-24T-4G Non-PoE Fully Managed Gigabit Switch with 4×10G SFP+ Uplinks (Global Standard Version)

1 × Global standard AC power cord

Rack mounting brackets and installation screws

Quick Start Guide & global regulatory compliance documents

Short Commercial Version (For Product Ads & Listing Titles)

The Cisco CBS350-24T-4X is a global non-PoE 24-port Gigabit fully managed switch with 4 dedicated 10G SFP+ high-speed fiber uplink ports (4X = four 10G uplink slots, separate from 1G SFP 4G models). Featuring dynamic dual-stack IPv4/IPv6 Layer 3 routing, true stacking capability, enterprise anti-spoofing security, full QoS and optimized thermal design, it delivers non-blocking high-capacity data connectivity for workstations, storage and fiber surveillance backhaul devices in medium business and campus high-bandwidth core networks, supporting rack/wall/desktop deployment, energy-efficient hardware and Cisco Limited Lifetime Hardware Warranty.


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