Description-

The Cisco CBS350-24T-4G is a managed Layer 2/Layer 3 switch aimed at small to medium business networks. It provides 24 auto-sensing Gigabit RJ-45 ports plus 4 SFP uplink ports. The “350” series is designed to combine enterprise-grade features (VLANs, QoS, multi-layer routing, security) with simple management via the Cisco Business Dashboard or on-box GUI. 

It is fanless (i.e. silent) in most operating ranges, making it suitable for office environments, and supports stacking so multiple switches can be managed as one logical unit. 

The switch is built with an 800 MHz ARM processor and typically has 512 MB of memory (RAM). 

It supports both Layer 2 switching and some Layer 3 routing capabilities (static routing, RIP, PBR) for greater flexibility in designing the network. 

Key Features-

Here are some of the main features the CBS350-24T-4G offers:

Switching / Performance & Ports

• 24 × 10/100/1000 Mbps RJ-45 ports (auto-sensing) 

• 4 × 1 Gbps SFP (fiber) uplink ports 

• Switching capacity: 56 Gbps 

• Forwarding rate: 41.66 Mpps (for 64-byte packets) 

• Internal architecture supporting high throughput and low latency 

Layer 2 & VLAN Support

• Up to 4,094 VLANs (802.1Q) supported simultaneously 

• Port-based, MAC-based, protocol-based, IP subnet VLAN assignment

• VLAN translation, Q-in-Q, selective Q-in-Q 

• Private VLAN (isolated / community / promiscuous) and Private VLAN Edge (PVE) / protected ports 

• Guest VLAN, unauthenticated VLAN, dynamic VLAN via RADIUS + 802.1x 

Layer 3 / Routing

• Static IPv4 / IPv6 routing RIP v2 support 

• Policy-Based Routing (PBR) for more flexible forwarding based on ACLs 

• DHCP server capabilities (multiple pools) 

• DHCP relay on Layer 3 / Layer 2 (Option 82) 

Link Aggregation & Redundancy

• Support for IEEE 802.3ad / LACP: up to 8 groups, each up to 8 ports, with 16 candidate ports per dynamic group 

• Loopback detection, UDLD (Unidirectional Link Detection) to prevent miswiring loops 

• Spanning Tree Protocol variants & protection (RSTP, etc.) 

Multicast & QoS / Traffic Control

• IGMP v1/v2/v3 snooping, supports ~2K multicast groups 

• IGMP Querier & IGMP proxy support 

• QoS / CoS / DSCP classification and scheduling

  Voice VLAN (automatic assignment and QoS for VoIP) 

• Rate limiting, storm control, broadcast / multicast / unknown unicast control 

Stacking & Management

• Hardware stacking: up to 4 units can be stacked and managed as one (up to 200 ports) 

• Stack-level failover / redundancy 

• Management via Cisco Business Dashboard, on-box GUI, CLI, SNMP, REST APIs 

• Zero-touch provisioning & voice device discovery (VSDP) 

• IPv6 support, ACLs, security features (IP-MAC binding, port security) 

Reliability, Environmental & Certifications

• Fanless design (silent) in normal temperature range (no internal fans) 

• Operating temperature: –5 to 50 °C (23° to 122 °F) Storage temperature: –25 to 70 °C 

• Humidity: 10% to 90% non-condensing (both operating and storage) 

• Acoustic noise: as fanless, negligible in normal environments; MTBF ~2,026,793 hours at 25 °C for this model

• Certifications: UL 62368, CSA 22.2, CE, FCC Part 15 Class A

  Specifications-

Here’s a more tabular / “quick specs” style breakdown: