Cisco CBS350-48P-4G Full English Product Description
1. Short Sales Title (For Quotation & E-commerce Listing)
Cisco CBS350-48P-4G Business 350 Series 48-Port Gigabit Partial PoE+ Fully Managed Layer 3 Switch, Global Standard Version, 370W Total PoE Power Budget, 4 Dedicated Gigabit SFP Uplink Slots, Dual-Stack IPv4/IPv6 Dynamic Routing, True Stackable, 1RU Rackmount High-Density PoE Access Switch
2. Official Product Overview
The Cisco CBS350-48P-4G is a high-density partial PoE+ fully managed enterprise Layer 3 switch within Cisco Business 350 global product lineup. The suffix 4G stands for four dedicated Gigabit SFP uplink ports (pure 1G fiber slots, distinct from 4X 10G SFP+ high-speed uplink models). Designed for medium-to-large enterprise access layers, multi-floor office wiring closets, large retail unified voice-video deployments and mid-density IP surveillance backhaul environments worldwide.
Compared with entry-level CBS250 smart switches, the CBS350 delivers full enterprise-grade managed features: dynamic Layer 3 routing, true stacking, comprehensive anti-spoofing security suite, sFlow traffic analytics and advanced multicast control. This partial PoE+ switch integrates data transmission and PoE power supply in one compact 1RU rack unit, eliminating external power injectors for medium-power Wi-Fi APs, entry-level PTZ IP cameras and standard video VoIP phones.
It features 48 IEEE 802.3at PoE+ Gigabit RJ45 access ports plus 4 independent dedicated Gigabit SFP fiber uplink slots for long-distance cross-building or cross-branch fiber interconnection, offering 52 total Gigabit Ethernet interfaces. Equipped with an internal power supply delivering a 370W total PoE budget, each port supports up to 30W PoE+ output under shared power allocation.
Powered by high-performance ARM processor with 512MB DRAM and 256MB flash memory, it provides 104 Gbps non-blocking switching capacity and 77.38 Mpps wire-speed forwarding rate for 64-byte frames, paired with a large 3MB shared dynamic packet buffer to eliminate congestion under concurrent bulk file transfers, multi-stream 4K surveillance and multi-user video conferences. Optimized thermal design ensures stable rack deployment in offices, retail malls and campus equipment rooms.
3. Port & PoE Hardware Specifications
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48 × 10/100/1000BASE-T RJ45 ports, fully IEEE 802.3at PoE+ compliant, max 30W power output per single port
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Integrated internal power supply, total PoE power budget: 370W Partial PoE
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4 × dedicated Gigabit SFP uplink slots (fiber-only non-combo design, 4G = four 1G SFP ports, not 10G SFP+)
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Supported Cisco SFP transceivers: MGBSX1 multimode, MGBLX1/MGBLH1 single-mode, MGBT1 copper SFP
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Intelligent PoE management suite: time-based PoE scheduling, real-time per-port power monitoring, short-circuit & overload auto-cutoff protection, PoE priority configuration
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Switching Capacity: 104 Gbps Non-Blocking
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Forwarding Rate (64-byte packets): 77.38 Mpps
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Shared Packet Buffer: 3 MB
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MAC Address Table: 16K entries; Jumbo Frame support up to 9000-byte MTU
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Dual console ports: RJ45 serial console + mini USB port for offline local CLI configuration
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Front-panel USB Type-A port for offline config backup & firmware upgrade
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True stacking capability: stack up to 4 CBS350 series switches under single IP unified management; cross-stack LAG, VLAN, QoS and port mirroring supported
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Universal internal AC power supply: 100–240V 50/60Hz global standard power cord
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Optimized thermal cooling design for continuous 1RU rack operation
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Form Factor: 1RU standard rackmount chassis, support rack mount, wall mount and desktop placement
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Dimensions: 445 × 350 × 44 mm (17.5 × 13.78 × 1.73 inches)
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Weight: 2.75 kg (6.06 lbs)
4. Comprehensive Layer 2 Switching Functions
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Up to 4096 IEEE 802.1Q tagged VLANs, port-based VLAN, voice VLAN, guest VLAN, private VLAN, dedicated management VLAN
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8 priority egress queues with Strict Priority / WRR / SPQ QoS scheduling to prioritize VoIP, surveillance video and business data traffic
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IEEE 802.3ad LACP link aggregation, multiple LAG groups for bandwidth expansion & link redundancy, cross-stack LAG support
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IGMP Snooping v1/v2/v3 with built-in IGMP Querier, supporting up to 1024 multicast groups for IPTV and multi-camera IP surveillance
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LLDP & LLDP-MED automatic endpoint discovery for IP phones, cameras and wireless APs
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Port mirroring, VLAN mirroring, RSPAN remote mirroring, RSTP/MSTP/PVST+ spanning tree, BPDU Guard, Root Guard, Loop Guard
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Broadcast/multicast/unicast storm control to prevent network flooding failures
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Enterprise anti-spoofing toolkit: DHCP Snooping, Dynamic ARP Inspection (DAI), IP Source Guard, static IP/MAC/Port Binding
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sFlow traffic monitoring for real-time flow-level visibility and network fault troubleshooting
5. Advanced Dual-Stack Dynamic Layer 3 Routing
Surpassing static-only routing on CBS250 smart switches, CBS350 provides full wire-speed Layer 3 forwarding:
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Dynamic routing protocol: RIPv2 for IPv4
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Up to 990 IPv4 static routes, 990 IPv6 static routes, 128 Layer 3 VLAN interfaces
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Native dual-stack IPv4 & IPv6 wire-speed forwarding, CIDR aggregation, full IPv6 first-hop security (ND Inspection, RA Guard)
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Built-in IPv4 DHCP Server & DHCP Relay with Option 82, UDP relay functionality
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Policy-Based Routing (PBR) for flexible traffic steering across segmented workgroups
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Direct inter-VLAN routing without external routers to reduce core gateway latency and bandwidth load
6. Enterprise-Grade Multi-Layer Security Suite
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IEEE 802.1X port-based authentication with RADIUS/TACACS+ centralized access control, web-based captive portal authentication
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Port security, static/dynamic MAC address binding, automatic port shutdown for unauthorized terminals
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Comprehensive DoS attack suppression, hardware accelerated L2-L4 ACL traffic filtering
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Encrypted management channels: HTTPS web GUI, SSH multi-privilege CLI, SCP file transfer, SNMPv3 secure remote monitoring
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Persistent syslog event logging, built-in cable diagnostic tools, mandatory password complexity policy
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Independent guest network isolation, Private VLAN Edge (PVE) for client separation
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Secure boot, encrypted configuration file storage, IPv6 ND Inspection & RA Guard to block IPv6 spoofing attacks
7. Energy-Saving Green Technologies
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IEEE 802.3az Energy Efficient Ethernet (EEE): auto power reduction for idle Ethernet links
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Dynamic power tuning based on cable length to cut unnecessary power consumption
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Port LED dimming or full shutdown mode for unmanned wiring closets
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Time-based PoE auto power on/off to eliminate idle power draw outside business hours
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Optimized hardware thermal design with minimal heat generation and extended service lifespan
8. Multi-Mode Local & Remote Management
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Intuitive graphical web management interface (HTTP/HTTPS) with basic & advanced operation modes
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Dual offline local console access: serial RJ45 + mini USB port for offline CLI configuration
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SSH secure remote command line management with multi-user privilege levels (1 / 7 / 15)
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SNMP v1/v2c/v3 compatible with third-party network monitoring platforms, native sFlow support
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TFTP/SCP/offline USB firmware upgrade, dual firmware images for reliable zero-downtime upgrades
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SNTP time synchronization, ping & traceroute diagnostic tools, Smartport auto-provisioning templates
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Single IP stacking management for centralized batch control of up to 4 stacked CBS350 switches
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Fully compatible with Cisco Business Dashboard & Cisco Business Mobile App for unified topology visualization and zero-touch deployment
9. Physical & Environmental Parameters
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Operating Temperature: -5°C to 50°C; Storage Temperature: -25°C to 70°C
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Operating Humidity: 10%–90% non-condensing relative humidity
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Global compliance standards: CE, RoHS, UL, FCC Class A
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MTBF: 909,838 hours at 25°C ambient temperature
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Warranty: Cisco Limited Lifetime Hardware Warranty
10. Typical Deployment Scenarios
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Medium-to-large enterprise unified voice-data-wireless core access switch with mass PoE VoIP phones and standard Wi-Fi 6 APs
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Large retail mall & factory mid-density surveillance switch with multiple PoE IP cameras and 1G fiber uplink aggregation
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Global multi-building school campus main distribution switch with cross-building Gigabit fiber interconnection
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Multi-branch retail headquarters central PoE access switch linking remote store POS and wireless coverage
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Stackable multi-switch large SMB network leveraging true stacking and dynamic Layer 3 routing for multi-department segmentation
11. Standard Package Contents
1 × Cisco CBS350-48P-4G Partial PoE+ Fully Managed Gigabit Switch (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 CBS350-48P-4G is a global partial PoE+ 48-port Gigabit fully managed switch with a 370W PoE budget and 4 dedicated Gigabit SFP fiber uplink ports (4G = four 1G uplink slots, separate from 10G SFP+ 4X 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 wire-speed high-capacity data and stable PoE power supply for medium-power IP cameras, Wi-Fi APs and VoIP phones in large-scale global businesses and campus core networks, supporting rack/wall/desktop deployment, energy-efficient hardware and Cisco Limited Lifetime Hardware Warranty.
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