MikroTik CRS112-8G-4S-IN Switch

MikroTik CRS112-8G-4S-IN Switch: Compact Powerhouse for Modern Networks

The MikroTik CRS112-8G-4S-IN Switch embodies a perfect blend of simplicity, efficiency, and highperformance networking. Designed for environments demanding reliable connectivity without excessive complexity, it combines 8 Gigabit Ethernet ports and 4 SFP slots, providing versatile connectivity for both copper and fiber infrastructures. Compact yet featurerich, this fanless switch delivers the MRHPE grade stability essential for smalltomedium enterprise networks, branch offices, and advanced home lab setups.

Powered by a QCA8511 CPU running at 400 MHz with 128 MB RAM and 16 MB flash, the CRS112-8G-4S-IN operates with remarkable agility for a switch of its class. Running RouterOS Level 5, it provides both switching and routing capabilities, VLAN segmentation, QoS, and extensive management options, allowing administrators to orchestrate their network with precision. Its passive cooling system ensures silent operation, making it ideal for noisesensitive environments.

The switch supports a wide voltage input range of 10–57 V DC, which offers deployment flexibility across different power scenarios, while maintaining a low power consumption of up to 13 W. At 200 × 142 × 44 mm and weighing just 500 grams, it is lightweight and spaceefficient, capable of fitting on desktops or being mounted on walls. The CRS112-8G-4S-IN is engineered to provide reliability, performance, and longevity under challenging operational conditions, with an operating temperature range of 30°C to +70°C.

RealWorld Applications

The CRS112-8G-4S-IN Switch is designed for networks where compact form factor, silent operation, and flexibility are crucial:

• SmalltoMedium Enterprises (SMEs): Ideal for office network backbones, connecting workstations, servers, and VoIP phones efficiently.
• Branch Offices: Reliable deployment for remote office connectivity with both copper and fiber uplinks.
• MRHPE Home Labs: Perfect for network enthusiasts or IT professionals building test labs with VLANs, routing, and firewall simulations.
• IoT and Surveillance Networks: Supports PoE devices via separate injectors, enabling robust, fanless deployment for security cameras and smart sensors.
• Educational Institutions: Efficient management of student labs, administrative VLANs, and multimedia distribution with VLAN segmentation and QoS.

This switch’s versatility ensures smooth operation for multiple types of network architectures, making it a solid choice for compact yet demanding setups.

Ports and Connectivity

The CRS112-8G-4S-IN provides a hybrid connectivity design that balances cost, performance, and flexibility:

• 8 × Gigabit Ethernet RJ45 Ports: Fullduplex 10/100/1000 Mbps ports support highspeed connections for computers, printers, IP phones, and access points.
• 4 × 1.25G SFP Slots: Fiberoptic uplinks allow longdistance, highspeed connectivity to other switches or core network devices, ideal for MRHPE grade deployments.
• Management Options: Comprehensive management is available via WinBox, WebFig, SSH, CLI, and SNMP, providing realtime network monitoring and configuration flexibility.

The combination of copper and fiber connectivity allows seamless integration into existing network infrastructures while providing scalability for future growth.

Key Features of MikroTik CRS112-8G-4S-IN Switch

The CRS112-8G-4S-IN boasts a wide array of features that enhance network reliability and performance:

• VLAN Support: Enables network segmentation for security, efficiency, and traffic prioritization.
• STP/RSTP Protocols: Ensures loopfree network topologies and stable network operations.
• Link Aggregation (LACP): Combines multiple ports for increased bandwidth and redundancy.
• QoS (Quality of Service): Prioritizes critical traffic such as VoIP or video streaming.
• Access Control Lists (ACL): Restricts access to sensitive areas of the network.
• IPv6 Ready: Futureproofing networks with dualstack support for modern protocols.
• DHCP Support: Simplifies IP management for devices connected to the network.

These features make it a powerful tool for both simple and complex networks, providing control, efficiency, and scalability.

VLAN Configuration Flexibility

One of the standout capabilities of the CRS112-8G-4S-IN is its flexible VLAN architecture. Administrators can create multiple VLANs to isolate traffic, manage bandwidth, and improve network security. This capability is vital for MRHPE grade setups, ensuring that critical services are segregated from guest or general office traffic. Combined with RouterOS Level 5, VLANs can be easily managed, monitored, and configured dynamically, allowing adaptive network design without compromising performance.

Silent Cooling and Energy Efficiency

Unlike many enterprise switches that rely on fans and loud cooling systems, the CRS112-8G-4S-IN uses a passive cooling design, ensuring completely silent operation. This fanless design not only reduces noise pollution but also lowers the risk of mechanical failure, increasing overall device longevity. Energy efficiency is further highlighted by a maximum consumption of 13 W, which is remarkably low for an 8port managed switch with fiber uplinks. This combination of passive cooling and low power consumption makes it ideal for offices, labs, and other environments where noise and heat must be minimized.

Comparison with Similar MikroTik Switches

The CRS112-8G-4S-IN is ideal for compact office deployments, fiber uplinks, and MRHPE oriented setups, while the CRS125 and CRS326 series cater to larger or higherperformance networks.

Technical Specifications

Frequently Asked Questions (FAQ)

1. Can the CRS112-8G-4S-IN be wallmounted?

Yes. Mikrotik supports both desktop and wallmount installations, making deployment flexible.

2. What type of fiber transceivers are compatible?

Standard 1.25G SFP modules, singlemode or multimode, depending on distance requirements.

3. Is it suitable for MRHPE home labs?

Absolutely. Its VLAN support, fanless design, and RouterOS Level 5 features make it ideal for highperformance labs.

4. Can it handle IPv6 traffic?

Yes, it supports dualstack IPv6, ensuring futureproof network compatibility.

5. How energyefficient is the CRS112-8G-4S-IN?

With a maximum consumption of 13 W and passive cooling, it’s highly energyefficient and silent in operation.