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Layer 3 Optical Module Switch

Fiber and communications infrastructure knowledge brief Published 06 Apr 2025

Use this reference to prepare product questions for CJC FIBRE. Check interfaces, capacity, protection and installation requirements against the current product documentation.

Layer 3 switches with optical modules provide high-speed fiber connectivity, advanced routing, and flexible management for enterprise and data center networks.

Key Features of L3 Optical Switches

Port Configurations and Optical Support: Modern L3 switches often include a mix of 1G, 10G SFP/SFP+, and 100G QSFP28 ports, allowing connection to fiber-based devices such as servers, IP cameras, and wireless access points. For example, the S5710-28SX offers 24 x 1G SFP ports, 4 x 1G combo ports, and 4 x 10G SFP+ uplinks, supporting a wide range of optical modules from different vendors for flexible deployment. High-density switches like the SODOLA 24-port L3 switch provide 24 x 10G SFP+ and 2 x 100G QSFP28 ports, with port splitting capabilities for 25G interfaces.

Layer 3 Routing and Protocols: These switches support IPv4/IPv6 dual-stack routing, static routing, and dynamic protocols such as RIP, OSPF, BGP, and VRRP. They also handle multicast routing (IGMP, MLD, PIM-DM, PIM-SM) and link aggregation, enabling efficient traffic management and redundancy. Management and Security: L3 optical switches provide multi-method management including Web GUI, CLI, Telnet, SSH, and SNMP.

Security features include ACLs at port, VLAN, and IP levels, integration with RADIUS/TACACS+, DHCP attack protection, and storm suppression. Some models also include Digital Diagnostic Monitoring (DDM) for real-time monitoring of optical module parameters like temperature, voltage, and optical power. High Availability and Redundancy: Enterprise-grade switches often feature hot-swappable power supplies and fans, virtual or physical stacking, and support for STP/RSTP/MSTP/ERPS/LACP, ensuring minimal downtime and network resilience.

Performance and Use Cases: These switches deliver wire-speed forwarding with low latency, suitable for core, aggregation, or access layers in enterprise and data center networks. They are ideal for high-density environments requiring 10G or higher fiber connectivity, supporting both copper and fiber networks seamlessly. Examples of L3 Optical SwitchesS5710-28SX: 24 x 1G SFP, 4 x 1G combo, 4 x 10G SFP+ uplinks, DDM support, ACLs, IPv4/IPv6 routing.

DXS-3400 Series: Stackable 10G fiber switch with modular power/fan design, Standard and Enhanced software images for L3 routing, Data Center Bridging support.

SODOL

A 24-Port 10G L3 Switch: 24 x 10G SFP+, 2 x 100G QSFP28, wire-speed forwarding, rich L3 features, and broad optical module compatibility. DXS-F3400-28SC: 24 x 10G SFP+, 4 x 100G QSFP28, supports BGP, OSPF, RIP, VRRP, L3 multicast, and can serve as core or aggregation switch. These switches provide scalable, high-performance, and secure fiber networking solutions, making them suitable for modern enterprise and data center deployments.

Layer 3 Optical Module Switch - CJC FIBRE CONSULTANTS [PDF]

Layer 3 Optical Module Switch

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Related Video Reference

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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