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SG300-20
- Description:
- 18 10/100/1000 ports, 2 combo mini-GBIC ports
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SG300-20 Overview
SG300-20 is a robust managed switch designed for small to medium-sized business networks, featuring a compact architecture with dependable AC power supply options for reliable operation. It delivers consistent performance through its integrated 10/100/1000 Ethernet ports and combo SFP uplink ports, ensuring efficient and secure network connectivity.
SG300-20 offers 20 fixed Ethernet ports along with two uplink ports while maintaining scalability for network growth even without stacking capability. The switch’s architecture supports Layer 2 and limited Layer 3 functions, making it ideal for diverse use cases that demand high performance and centralized management.
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SG300-20 Specifications
| Product Type | Switch |
| Power Source | AC Power Supply |
| Layer Supported | Layer 2 / Layer 3 |
| Form Factor | Desktop / Rack-mount |
| Power Consumption | 35W |
| Number Of Ethernet Ports | 12–24 Ports |
| Number Of Downlink Ports | 20 Ports |
| Manageable | Managed |
| Ethernet Technology | 10/100/1000 |
| Media Type Supported | Combo |
| Redundant Power Supply Supported | No |
| Manufacturer Part Number | SG300-20 |
| Uplink Configuration | 1G |
| IOS | LAN Lite |
| POE Support | Non POE |
| SFP Ports | Combo |
| Memory | 256 MB |
| Rack Units | 1 RU |
| Interface Ports | 10/100/1000 |
| Port/Expansion Slot Details | 20 RJ45 ports and 2 combo SFP ports |
| Flash Memory | 64 MB |
| Switching Capacity | 28 Gbps |
| Switching Capacity With Stacking | N/A |
| Product Name | Cisco SG300-20 Managed Switch |
| Height | 1.7 inches |
| Width | 17.5 inches |
| Depth | 9.4 inches |
| Weight | 9 lbs |
SG300-20 Use Case
SMB Multi-VLAN Segmentation and QoS for VoIP and Wireless Access
In a 50-user small-business office deploying VoIP phones and Wi-Fi access points, the SG300-20-18 10/100/1000 ports, 2 combo mini-GBIC ports delivers hardware-based VLAN segmentation and granular QoS. Administrators carve out separate voice, data and wireless VLANs on the 18 Gigabit ports and apply traffic-prioritization rules to ensure crystal-clear voice quality while isolating guest Wi-Fi. The outcome is a simplified, secure network with deterministic performance for critical communications.
Data Center Rack Aggregation with Dual Fiber Uplink for High Availability
In a server-rack aggregation scenario, the SG300-20-18 10/100/1000 ports, 2 combo mini-GBIC ports serves as an edge switch connecting 16 application servers at Gigabit speeds, while the two combo mini-GBIC slots host redundant 1 Gbps fiber links to the core switch. This dual-uplink configuration provides automatic failover and load balancing, eliminating single points of failure and maximizing throughput. The benefit is a resilient, high-performance infrastructure that scales with growing compute demands.
Secure Guest and Corporate Network Isolation in Hospitality Environments
A boutique hotel leverages the SG300-20-18 10/100/1000 ports, 2 combo mini-GBIC ports to enforce strict separation between guest Internet access and internal management systems. By assigning guest rooms and public-area access points to isolated VLANs on the 18 copper ports and connecting the property management server via a fiber mini-GBIC uplink, IT achieves end-to-end traffic isolation and centralized policy enforcement. The result is enhanced data security, regulatory compliance and simplified network operations.
Quality Certifications
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Product Comparison Table
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| Depth | 9 inches | 9.4 inches | 8.5 inches | 11.3 inches | 10.8 inches |
| Ethernet Technology | 10/100 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 32 MB | 64 MB | 64 MB | 256 MB | 32 MB |
| Form Factor | Rack-mount | Desktop / Rack-mount | Desktop / Rack-mount | Rack-mount | Desktop / Rack-mount |
| Height | 1.73 inches | 1.7 inches | 1.75 inches | 1.73 inches | 1.73 inches |
| Interface Ports | 10/100 | 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 3 | Layer 2 / Layer 3 Lite | Layer 2 / Layer 3 Lite | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | SF302-08P | SG300-20 | SG300-28MP | SG300-52MP | SG300-10PP |
| Media Type Supported | Twisted Pair | Combo | Twisted Pair / Fiber / Combo | Twisted Pair / Fiber | Combo |
| Memory | 64 MB | 256 MB | 128 MB | 256 MB | 64 MB |
| Number of Downlink Ports | 8 Ports | 20 Ports | 24 Ports | 48 Ports | 8 Ports |
| Number of Ethernet Ports | Under 12 Ports | 12–24 Ports | 24–48 Ports | Over 48 Ports | Under 12 Ports |
| POE Support | POE | Non POE | POE+ | POE+ | POE+ |
| Port/Expansion Slot Details | 8 x 10/100 PoE ports | 20 RJ45 ports and 2 combo SFP ports | 24 PoE ports, 4 combo SFP ports | 48 x 10/100/1000 PoE ports and 4 x 10/100/1000 SFP ports | 8 PoE ports with 2 combo uplink ports |
| Power Consumption | 56 W | 35W | N/A | N/A | 29W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco Small Business SF302-08P 8-Port PoE Smart Switch | Cisco SG300-20 Managed Switch | Cisco Small Business SG300-28MP | Cisco SG300-52MP 52-Port Gigabit PoE Managed Switch | Cisco Small Business SG300-10PP |
| 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 | N/A | Combo | 4 SFP Ports | 4 SFP Ports | Combo |
| Switching Capacity | 1.6 Gbps | 28 Gbps | 56 Gbps | 104 Gbps | 20 Gbps |
| Switching Capacity with Stacking | N/A | N/A | N/A | N/A | N/A |
| Uplink Configuration | 1G | 1G | 1G | 1G | 1G |
| Weight | 4.6 lbs | 9 lbs | 7.7 lbs | 16 lbs | 7.5 lbs |
| Width | 8.66 inches | 17.5 inches | 17 inches | 17.3 inches | 8.66 inches |
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Questions & Answers
Q
What is the Cisco SG300-20 switch?
A
The Cisco SG300-20 is a fully managed small-business switch featuring 18 Gigabit Ethernet ports and 2 combo mini-GBIC slots for fiber uplinks, designed for secure, scalable network deployment.
Q
How many 10/100/1000 ports does the SG300-20 offer?
A
The SG300-20 provides 18 10/100/1000 Mbps RJ-45 ports for high-speed copper connectivity, ideal for bandwidth-intensive applications.
Q
What are the combo mini-GBIC ports used for?
A
The SG300-20’s two combo mini-GBIC ports support SFP modules for fiber or copper uplinks, extending network reach up to dozens of kilometers.
Q
Does the SG300-20 support Layer 3 routing?
A
Yes, the SG300-20 includes static and RIP routing features, enabling inter-VLAN routing and simplified traffic segmentation at Layer 3.
Q
How do I manage the SG300-20 switch?
A
You can manage the SG300-20 via its web-based GUI, Cisco Network Assistant, or Command-Line Interface (CLI) over SSH or console port for full configuration control.
Q
What security features are available on the SG300-20?
A
The SG300-20 offers 802.1X port-based authentication, Access Control Lists (ACLs), Storm Control and DHCP snooping to protect against unauthorized access and attacks.
Q
Can I configure VLANs on the SG300-20?
A
Absolutely. The SG300-20 supports up to 256 VLANs with 4,094 VLAN IDs, enabling network segmentation, traffic isolation and better broadcast control.
Q
What quality of service (QoS) capabilities does it have?
A
The SG300-20 delivers advanced QoS with 8 hardware queues, DSCP/802.1p priority mapping and WRR scheduling to ensure optimal voice, video and data delivery.
Q
Is the SG300-20 energy efficient?
A
Yes, it incorporates Energy Efficient Ethernet (IEEE 802.3az) and smart power-down idle links to reduce power consumption and operational costs.
Q
Does the SG300-20 support link aggregation?
A
The switch supports up to 12 Link Aggregation Control Protocol (LACP) groups with 8 ports per group for increased bandwidth and redundancy.
Q
What is the switching capacity of the SG300-20?
A
The SG300-20 delivers a switching capacity of 52 Gbps and a forwarding rate of 38.69 Mpps to handle heavy traffic loads without bottlenecks.
Q
Is the SG300-20 fan-less?
A
No, the SG300-20 includes a single, low-noise fan for efficient cooling, making it suitable for office and wiring-closet environments.
Q
Can I rack-mount the SG300-20?
A
Yes, the SG300-20 ships with rack-mount brackets and fits in a standard 19-inch equipment rack, occupying 1RU of space.
Q
What warranty and support does Cisco provide?
A
Cisco offers a limited lifetime hardware warranty and free technical support for the SG300-20, backed by its global small business service network.
Q
Which SFP modules are compatible with the SG300-20?
A
The SG300-20 accepts Cisco mini-GBIC SFP modules including 1000BASE-SX, LX/LH, ZX, and copper GLC-TE for varied fiber and Gigabit copper connections.
