The MikroTik CRS310 is a compact Cloud Router Switch designed for indoor fiber aggregation in ISP, SMB, and lab environments. With a mix of 10G SFP+ and 1G SFP ports, it offers a practical upgrade path for networks transitioning from Gigabit to 10 Gigabit fiber while maintaining low latency and stable performance.

Where the CRS310 is commonly used

• Indoor fiber aggregation for small and medium ISPs
• SMB core or distribution switching
• Network labs and test environments
• Upgrades from CRS212 and older Gigabit-only switches

Equipped with a modern ARM v7 CPU, 256 MB of RAM, and Marvell switch chips, the CRS310 delivers reliable performance for mixed 1G and 10G fiber workloads. Hardware-offloaded VLAN filtering and selective Layer 3 routing help reduce CPU load while maintaining predictable throughput.

The CRS310 features five 1G SFP ports, four 10G SFP+ ports, and a dedicated Gigabit Ethernet port connected directly to the switch chip for full Gigabit throughput. PoE-in support provides flexible powering options for deployments where traditional power access is limited.

Designed for indoor use, the CRS310 can be mounted in a standard 1U rack to keep network infrastructure organized. Optical fiber support makes it a strong alternative to copper in environments where electromagnetic interference, security, or distance are concerns.

• 4 × 10G SFP+ ports
• 5 × 1G SFP ports
• 1 × Gigabit Ethernet port
• PoE-in support
• Hardware-offloaded VLAN filtering
• Partial hardware Layer 3 routing
• RouterOS or SwOS support
• Rack-mountable (1U)
• Designed for indoor environments

Need help choosing the right CRS switch? See our CRS switch guide