Cisco CWDM 1570-nm SFP

Elevate your network with the Cisco CWDM 1570-nm SFP, a compact, high-performance fiber optic transceiver designed to meet the demanding needs of metro, campus, and data-center deployments. This 1 x 1000Base-X SFP (mini-GBIC) module delivers dependable gigabit Ethernet throughput over CWDM wavelengths, enabling scalable bandwidth without overhauling your existing fiber infrastructure. Crafted by Cisco, it’s built for seamless plug-and-play integration with Cisco switches and routers, helping you accelerate deployment, simplify management, and minimize downtime. The 1570 nm CWDM channel sits within the well-established C-band, delivering robust performance for long-reach links and dense link environments while supporting standard optical fiber cabling and LC duplex connectors for a clean, reliable fiber plant. Whether you’re upgrading an aging fiber link, extending a backbone, or interconnecting switches across a building or campus, this SFP module provides the performance, reliability, and compatibility needed to keep networks fast and resilient.

• High-speed 1 Gbps data transfer — The module supports 1000Base-X, delivering reliable Gigabit Ethernet performance over compatible fiber cabling. Perfect for uplink connections, inter-switch links, and data-intensive applications, ensuring smooth multi-user experiences, low-latency video, and fast data transfers across your network.
• CWDM 1570-nm wavelength — Operating at the 1570-nm CWDM wavelength, this transceiver optimizes spectral efficiency, enabling more channels over a single fiber strand. The 1570-nm channel is designed to provide robust performance in metropolitan backbones, campus networks, and service-provider deployments while maintaining strong tolerance to typical fiber losses and dispersion.
• Compact SFP (mini-GBIC) form factor — A standard Small Form-factor Pluggable module that slides into any compatible SFP port on Cisco Catalyst, Nexus, and other Cisco networking devices. The LC duplex optical connector supports easy fiber patching, simplifying installation and maintenance in dense equipment racks.
• Designed for Cisco devices and networks — Built by Cisco to meet exacting interoperability standards, this SFP integrates seamlessly with Cisco switching and routing platforms. Expect streamlined management through familiar Cisco IOS/IOS-XE interfaces, straightforward configuration, and reliable operation in mixed-vendor environments when used within established Cisco networks.
• Durable, enterprise-ready fiber solution — Engineered for reliability in demanding environments, the Cisco CWDM 1570-nm SFP combines robust optical performance with practical deployment features. It supports durable fiber cabling practices, resilience against common field conditions, and a stable link that contributes to higher uptime and consistent throughput.

Technical Details of Cisco CWDM 1570-nm SFP

• Transceiver type: SFP (Small Form-factor Pluggable) module
• Wavelength: 1570 nm CWDM channel
• Data rate: 1 Gbps (1000Base-X)
• Interface: 1 x 1000Base-X SFP; supports Gigabit Ethernet over fiber
• Connector: LC duplex (fiber optic) at the transceiver end
• Fiber type: Optical fiber cabling compatible with CWDM systems
• Form factor: SFP (mini-GBIC) for easy insertion into standard SFP ports
• Compatibility: Optimized for Cisco networking equipment (Catalyst, Nexus) with reliable interoperability within Cisco ecosystems
• Application: Ideal for metro/backbone links, campus interconnects, and data-center intra-building connections requiring scalable, fiber-based Gigabit Ethernet

How to install Cisco CWDM 1570-nm SFP

• Power down the device only if your network policy requires it; otherwise, prepare a compatible Cisco switch or router with an available SFP port.
• Identify a suitable SFP port on the Cisco device and remove any dust covers from the port if present.
• Carefully align the Cisco CWDM 1570-nm SFP with the SFP slot and insert it until it seats securely. Do not force the module; you should feel a gentle click when it’s properly seated.
• Attach a paired LC duplex fiber patch cable to the SFP’s LC duplex connector, ensuring correct polarity and clean, clean-terminated fiber ends. Connect the other end to the corresponding transceiver or optical distribution component in the link path.
• Power up the device (if required) and verify link activity on the SFP port LED. On Cisco devices, you can confirm operational status with the CLI or GUI (e.g., show interfaces status or show interfaces ).
• Configure the interface as needed to enable the link, ensuring appropriate VLANs, spanning-tree settings, and any required QoS or routing configurations. If cross-vendor equipment is involved, verify compatibility and perform basic link tests to confirm stability and throughput.
• Document the installation details, including fiber type, length, and wavelength, to support future maintenance and troubleshooting.

Frequently asked questions

• What is the Cisco CWDM 1570-nm SFP? — It is a Cisco-branded CWDM SFP transceiver that provides 1 Gbps Ethernet connectivity via the 1570-nm CWDM wavelength, designed for use in Cisco switches and routers to extend fiber-based networks.
• What does 1000Base-X mean? — 1000Base-X refers to the Gigabit Ethernet standard over fiber, delivering up to 1 Gbps of data throughput per link when paired with a compatible receiver and optic fiber cabling.
• Which devices are compatible with this SFP? — This module is designed for use with Cisco networking equipment, including Catalyst and Nexus devices. While some third-party switches may support SFPs from various vendors, Cisco-branded modules are optimized for Cisco product interoperability and management.
• What kind of fiber cable do I need? — The SFP uses LC duplex connectors and is intended for optical fiber cables compatible with CWDM systems. Use appropriate CWDM-compatible fiber patch cords and ensure correct connector cleanliness for optimal performance.
• What advantages does the 1570-nm CWDM wavelength offer? — The 1570-nm CWDM channel is part of the commonly used C-band, enabling efficient use of fiber spectrum, reducing interference in multi-channel deployments, and supporting scalable metro and campus networks with reliable link budgets.
• How do I verify the link after installation? — Check the SFP port LEDs on the switch and run interface status commands in the Cisco CLI (for example, show interfaces status) to confirm the link is up and operating at the expected speed. If needed, perform basic traffic tests to validate throughput and latency.