Description 

The Cisco CBS350-48T-4X is a fully managed fixed-configuration switch in Cisco’s Business 350 series, designed for small to medium business use. It offers a robust set of Layer 2 and basic Layer 3 features, high performance, and flexible uplinks to support high-bandwidth connectivity. It is suitable for campus edge, access, or aggregation roles in a business network.

This model provides:

• 48 × Gigabit Ethernet (10/100/1000) RJ-45 ports

• 4 × 10 Gigabit SFP+ uplink ports

• Support for stacking (up to 4 units) so multiple switches can behave as a single logical switch 

• A rich feature set including VLAN, QoS, routing, security, link aggregation, etc. 

The “IN” suffix likely means the regional (India) version — same hardware, but compliance for local regulatory requirements.

Note: Cisco has at times declared the CBS350 series as EOL (end of life) and recommends the Catalyst / C1300 series as replacement in some regions. 

Key Features

Here are the main features and functional capabilities of the CBS350-48T-4X:

1. Switching & Performance

• Switching capacity / throughput to handle full line rate across all ports. In datasheet, supporting ~130.94 million packets per second (mpps) for 64-byte frames. 

• High backplane bandwidth via 10G uplinks ensures that uplinks don’t become a bottleneck. 

2. Uplink & Stacking

• 4 × 10G SFP+ ports for uplinks or stacking between switches. 

• Supports hardware stacking of up to 4 switches, to manage them as one system with redundancy and simplified management.

• When stacking, the SFP+ ports are used as the high-speed stack interconnect. The RJ-45 ports do not serve as stack ports. 

3. Layer 2 / Layer 3 Features

• VLAN support: 802.1Q, port-based VLANs, MAC-based VLAN, protocol VLAN, IP-subnet based VLANs, private VLAN (promiscuous / isolated / community), etc. Advanced VLAN features: Q-in-Q, selective Q-in-Q, VLAN translation, etc. 

• Link aggregation / LACP support: up to 8 groups, up to 8 ports per group (16 candidate ports) IPv4 & IPv6 static routing, RIP v2, support for up to ~990 static routes, 128 IP interfaces 

• Policy-Based Routing (PBR) to route flows based on ACLs, etc. 

• DHCP server, DHCP relay across VLANs, and UDP relay support 

  Multicast support: IGMP snooping (v1, v2, v3), IGMP querier, IGMP proxy, MVR (Multicast VLAN Registration) 

• Other protection / resiliency: UDLD (Unidirectional Link Detection), loopback detection, Spanning Tree / MSTP, etc. 

4. Security, QoS & Traffic Control

• Access Control Lists (ACLs) for filtering and traffic control

• Time-based ACLs

• QoS classification, queuing, policing / shaping

• Voice VLAN (automatic tagging and priority for voice traffic) 

• Guest VLAN, unauthenticated VLAN

• RADIUS / 802.1x support for dynamic VLAN assignment

• Private VLAN Edge (PVE) / protected ports

• MAC-based security, port security, etc.

5. Management & Monitoring

• Web-based GUI / dashboard (Cisco Business Dashboard)

• Command-line interface (CLI)

• SNMP, Syslog, RMON support

• sFlow, NetFlow (or Cisco’s version of flow monitoring)

• Link / port status monitoring, performance counters

• Support for firmware upgrades, backup/restore configurations

• Zero-touch deployment of voice endpoints using VSDP (Voice Services Discovery Protocol) 

6. Physical & Environmental Features

• Rack-mountable (19" rack)

• Operating temperature: 0°C to 50°C (32°F to 122°F) for many CBS350-48T-4X models 

• Storage temperature: –25 °C to 70 °C

• Operating humidity: 10% to 90% (non-condensing)

• Acoustic noise (with fan) and MTBF values are provided for the series (though per-model values may vary) 

• Compliance with standards / certifications: UL, CE, FCC, etc. 

 Specifications

Below is a consolidated table of major specifications: