MikroTik CRS125-24G-1S-IN Switch

MikroTik CRS125-24G-1S-IN Switch: Precision Switching for Modern Networks

MikroTik CRS125-24G-1S-IN Switch stands as a versatile and highly adaptable Layer 3–capable managed switch engineered for environments that demand smooth data flows, robust control mechanisms, and longterm reliability. Its streamlined design, coupled with an intelligent architecture powered by the Qualcomm Atheros AR9344 600 MHz CPU, makes it a prime example of engineering balanced between efficiency and innovation.

This model integrates 24 Gigabit Ethernet ports and a dedicated 1G SFP slot, presenting a hybrid switching framework that harmonizes copper and fiber infrastructures. Supporting the rich and matured MikroTik RouterOS Level 5, it offers extensive routing, firewalling, tunneling, and access control abilities—blending the functionality of a router and switch into one cohesive unit.

The device’s fanless form factor ensures whispersilent operation, vital for soundsensitive environments such as offices, studios, and IT control rooms. Meanwhile, the touchenabled LCD panel provides instant visibility into device health and offers quick access to essential parameters without requiring a workstation.

Crafted for consistency, agility, and intelligent traffic management, MikroTik CRS125-24G-1S-IN Switchstands as a dependable cornerstone for enterprises seeking a balance between affordability and highperformance switching.

Key Applications for MikroTik CRS125-24G-1S-IN Switch

The MRHPE friendly engineering of the MikroTik CRS125-24G-1S-IN Switch promotes wideranging use cases across varied business landscapes:

1. Corporate Network Distribution Layer

Its 24 Gigabit Ethernet ports make it suitable for expanding highdensity workspaces—offices with many endpoints, printers, and VoIP phones. The switching capacity of 48 Gbps ensures that peakhour traffic does not overwhelm the backbone.

2. Educational Institutions

Schools and universities benefit from its VLAN handling, ACLs, and central management tools. It supports controlled network segmentation for labs, staff access, student WiFi networks, and administrative operations.

3. Small to Midsize Data Environments

With its mixture of routing and switching, it acts as a compact data center aggregation switch—managing virtualized environments, private servers, and backup systems.

4. Surveillance and IoT Deployments

A fanless and reliable design makes it perfect for security camera networks, environmental sensors, and automation systems requiring uninterrupted uptime.

5. Managed Service Providers (MSPs)

Routing capabilities, firewall rules, and longterm stability position the device as a dependable clientpremise equipment option for MSPcontrolled networks.

Port and Connectivity Layout MikroTik CRS125-24G-1S-IN Switch

The MikroTik CRS125-24G-1S-IN Switch offers a meticulously organized hardware layout that encourages clarity and precision during deployment.

24 Gigabit Ethernet Ports

Each RJ45 port supports fullduplex communication and efficient packet processing, ideal for structured cabling systems handled under MRHPE grade configurations. The ports are autonegotiating and autoMDI/MDIX, simplifying connectivity.

1G SFP Slot

The single SFP port serves as a fiber uplink connector. It can accommodate multimode or singlemode transceivers depending on distance requirements, bridging copper networks with longdistance fiber backbones.

Touchscreen LCD

A standout feature is the integrated LCD panel that displays:

• Live traffic rates
• Interface status
• Quick configuration menus
• Alerts and operational cues

External PSU

The external power adapter keeps heat away from the internal circuitry, extending the switch’s lifespan and ensuring stable voltage delivery.

Creating Secure VLAN Architecture MikroTik CRS125-24G-1S-IN Switch

Segmenting traffic via VLANs is essential for network hygiene, performance optimization, and airtight security. MikroTik CRS125-24G-1S-IN Switch excels in this domain through:

• 802.1Q VLAN tagging
• Port isolation
• Guest VLANs
• Multicast boundary controls

This allows administrators to categorize users, devices, departments, and services into structured digital zones. Each segment remains protected from lateral movement threats and noisy broadcast storms.

The switch’s ability to apply firewall rules directly within RouterOS strengthens the overall defense posture. Coupled with bandwidth shaping, rate limits, and access control lists, VLAN segments become fortified enclaves rather than simple partitions.

Centralized Access Control MikroTik CRS125-24G-1S-IN Switch

Modern organizations demand centralized oversight that blends precision with efficiency. The CRS12524G1SIN delivers access control mechanisms engineered to protect sensitive assets:

• User authentication via RADIUS or TACACS+
• MACbased restrictions
• IP filter lists
• Layer 3 routing permissions
• Interfacelevel user privileges

These controls enable administrators to define who enters the network and what resources they can interact with. This helps maintain compliance standards and operational clarity within digital infrastructures.

MikroTik CRS125-24G-1S-IN Switch vs Similar MikroTik Models

A comparison with its siblings showcases its unique place in the MikroTik ecosystem:

The CRS12524G1SIN stands out due to its RouterOS Level 5 licensing, granting extensive capabilities not available in simpler models. It is ideal for networks that require routing logic and advanced administrative tooling integrated within an affordable switch.

Technical Specifications: MikroTik CRS125-24G-1S-IN Switch

FAQ

1. Is the CRS125-24G-1S-IN  suitable for large enterprises?

Yes, it fits perfectly into branch networks, departmental layers, and managed deployments requiring routing and switching in a compact form.

2. Can this model handle interVLAN routing?

Absolutely. With RouterOS Level 5, it supports robust and efficient interVLAN routing.

3. Is the switch noisy?

No. It has a fanless chassis, making it completely silent.

4. Does it support fiber uplinks?

Yes, through its dedicated 1G SFP slot.

5. Can it be managed remotely?

Yes. Management options include WinBox, WebFig, SSH, API, and commandline interfaces.