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SG250-18
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- Cisco SG250-18 18-Port Gigabit Smart Switch
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SG250-18 Overview
SG250-18 is a high-performance, enterprise-class Layer 2 smart switch designed for small and medium-sized networks. It features a robust architecture with a mix of 16 RJ-45 ports and 2 combo SFP uplink ports, delivering versatile connectivity options over twisted pair and fiber, and is powered by an integrated AC power supply for reliable deployment.
This switch supports stacking for simplified management and expanded scalability, ensuring that growing networks maintain optimum performance. With efficient switching capacity and low power consumption, the SG250-18 is ideally suited for branch offices, SMB networks, and other business-critical applications where cost-effective, reliable network infrastructure is essential.
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Explore more options from Switches or explore other Cisco products.
SG250-18 Specifications
| Product Type | Switch |
| Power Source | AC Power Supply |
| Layer Supported | Layer 2 |
| Form Factor | Rack-mount |
| Power Consumption | 30 W |
| Number Of Ethernet Ports | 12–24 Ports |
| Number Of Downlink Ports | 16 Ports |
| Manageable | Managed |
| Ethernet Technology | 10/100/1000 |
| Media Type Supported | Combo |
| Redundant Power Supply Supported | No |
| Manufacturer Part Number | SG250-18 |
| Uplink Configuration | 1G |
| IOS | LAN Lite |
| POE Support | Non POE |
| SFP Ports | Combo |
| Memory | 128 MB |
| Rack Units | 1 RU |
| Interface Ports | 10/100/1000 |
| Port/Expansion Slot Details | 16 RJ-45 ports and 2 combo SFP ports |
| Flash Memory | 32 MB |
| Switching Capacity | 20 Gbps |
| Switching Capacity With Stacking | 40 Gbps |
| Product Name | Cisco SG250-18 Smart Switch |
| Height | 1.7 inches |
| Width | 17.3 inches |
| Depth | 11.3 inches |
| Weight | 7.3 lbs |
SG250-18 Use Case
Multi-VLAN Segmentation for SMB Network Security
A small law firm deploys the Cisco SG250-18 18-Port Gigabit Smart Switch to segment client data, guest Wi-Fi and staff workstations into isolated VLANs. Leveraging advanced Layer 2 security features such as Access Control Lists (ACLs) and 802.1Q tagging, the switch enforces strict traffic policies while maintaining gigabit performance. Outcome: Enhanced data privacy, regulatory compliance and reduced attack surface without sacrificing network speed.
High-Definition IP Surveillance in Retail Environments
A mid-sized retail chain uses the SG250-18’s eight PoE+ ports and 10G stacking uplinks to power and aggregate multiple 4K IP cameras across a store network. QoS settings prioritize video streams to prevent frame loss during peak hours, while link-aggregation ensures uninterrupted recording. Outcome: Reliable, high-definition surveillance with simplified cable management and centralized switch control, boosting loss prevention and operational oversight.
VoIP and Video Conferencing Integration for Professional Services
A consulting firm integrates the Cisco SG250-18 to support 50+ VoIP handsets and HD video endpoints in a single office. Intelligent QoS queues guarantee voice clarity and jitter-free video calls, while rapid spanning tree ensures seamless failover to backup uplinks. Outcome: Crystal-clear communications, reduced call drops and improved collaboration productivity for client presentations and internal meetings.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| Depth | 10.2 inches | 13.6 inches | 9.8 inches | 11.3 inches | 11.3 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 32 MB | N/A | 32 MB | 32 MB | 32 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.73 inches | 1.73 inches | 1.73 inches | 1.7 inches | 1.73 inches |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| IOS | LAN Lite | LAN Lite | LAN Lite | LAN Lite | LAN Lite |
| Layer Supported | Layer 2 | Layer 2 | Layer 2 | Layer 2 | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | SF250-24 | SF250-48 | SF250-48HP | SG250-18 | SG250-26 |
| Media Type Supported | Twisted Pair | Twisted Pair / Fiber | Twisted Pair | Combo | Twisted Pair |
| Memory | 128 MB | N/A | 128 MB | 128 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 48 Ports | 48 Ports | 16 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | POE+ | Non POE | Non POE |
| Port/Expansion Slot Details | 24 x 10/100/1000 RJ-45 ports; 2 combo SFP ports | 48 x 10/100/1000 Ethernet ports and 4 x 1G SFP uplink ports | 48 PoE+ ports and 4 SFP uplink ports | 16 RJ-45 ports and 2 combo SFP ports | N/A |
| Power Consumption | 22 W | 33.6 W | 350 W | 30 W | 24W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco SF250-24 Managed Switch | Cisco Small Business SF250-48 Managed Switch | Cisco SF250-48HP Smart Switch | Cisco SG250-18 Smart Switch | Cisco Small Business SG250-26 |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | No | No | No |
| SFP Ports | Combo | 4 SFP Ports | 4 SFP Ports | Combo | Combo |
| Switching Capacity | 56 Gbps | 104 Gbps | 104 Gbps | 20 Gbps | 32 Gbps |
| Switching Capacity with Stacking | 112 Gbps | N/A | N/A | 40 Gbps | N/A |
| Uplink Configuration | 1G | 1G | 1G | 1G | 1G |
| Weight | 6.17 lbs | 6.8 lbs | 16 lbs | 7.3 lbs | 7.2 lbs |
| Width | 17.3 inches | 17.3 inches | 17.3 inches | 17.3 inches | 17.5 inches |
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Questions & Answers
Q
What are the key features of the Cisco SG250-18?
A
The Cisco SG250-18 is an 18-port Gigabit Smart Switch with 16 RJ45 Gigabit ports and 2 SFP slots, offering Layer 2 switching, static routing, IPv6 support, advanced QoS, VLAN segmentation, and web/CLI/SNMP management for SMB networks.
Q
How many Gigabit ports does the Cisco SG250-18 provide?
A
The SG250-18 provides 16 Gigabit RJ45 ports plus 2 SFP combo slots, delivering 18 full-duplex connections at up to 1 Gbps per port.
Q
Does the Cisco SG250-18 support Power over Ethernet (PoE)?
A
No. The SG250-18 does not support PoE. For PoE requirements, consider the Cisco SG250-18P model or other Cisco Small Business switches with integrated PoE.
Q
Which management interfaces are available on the SG250-18?
A
The SG250-18 offers a web-based GUI, Command Line Interface (CLI) via console or SSH, and SNMP v1/v2c/v3 support for comprehensive remote management and monitoring.
Q
Can the SG250-18 handle VLAN segmentation?
A
Yes. It supports up to 256 VLAN IDs (802.1Q), private VLAN edge, and dynamic VLAN assignment for secure network segmentation and traffic isolation.
Q
Does the SG250-18 support Layer 3 static routing?
A
Yes. The SG250-18 provides basic Layer 3 static routing with up to 32 static routes, enabling inter-VLAN routing without an external router.
Q
What is the switching capacity and packet forwarding rate of the SG250-18?
A
The SG250-18 delivers a non-blocking switching capacity of 36 Gbps and a forwarding rate of up to 26.78 Mpps for wire-speed performance.
Q
What Quality of Service (QoS) features are available on the SG250-18?
A
It offers 8 hardware queues, traffic prioritization via 802.1p and DiffServ, ingress/egress rate limiting, and weighted round robin (WRR) for granular traffic control.
Q
Can I stack multiple SG250-18 switches?
A
No. The SG250-18 does not support physical stacking. Link aggregation (LAG) with up to 12 ports per group can be used instead to increase bandwidth and redundancy.
Q
Does the SG250-18 support IPv6?
A
Yes. It fully supports IPv6, including management over IPv6, IPv6 ACLs, and neighbor discovery, ensuring future-proof network compatibility.
Q
What warranty does the Cisco SG250-18 include?
A
Cisco provides a limited lifetime hardware warranty and 90-day software support for the SG250-18. Optional SMARTnet Service offers enhanced support and coverage.
Q
What are the physical dimensions and power requirements of the SG250-18?
A
The SG250-18 measures 1.73 × 17.32 × 10.63 inches, weighs 4.1 lbs, and operates at 100–240 V AC, 50/60 Hz, with a maximum power draw of 12 W.
Q
How do I configure link aggregation on the SG250-18?
A
In the web GUI, go to LAG > Link Aggregation, click Add, select member ports, choose static or LACP mode, and apply settings to aggregate multiple ports.
Q
Is the SG250-18 suitable for 4K video streaming?
A
Yes. With 1 Gbps ports, non-blocking switching, and advanced QoS, the SG250-18 can handle multiple concurrent 4K video streams in SMB environments.
Q
What security features are built into the SG250-18?
A
It includes 802.1X port-based authentication, ACLs, DHCP snooping, dynamic ARP inspection, SSL/SSH for secure management, and broadcast storm protection.
Q
Does the SG250-18 support SNMP monitoring?
A
Yes. The SG250-18 supports SNMP v1/v2c/v3 for real-time monitoring, traps, and MIBs, allowing integration with third-party network management systems.
