How Does Multimode Fiber Realize 40G/100G Ethernet Migration?
Updated at Jan 24th 20251 min read
Most data centers are migrating their network to 40G and 100G to support high-speed data transmission driven by cloud computing, Big Data, and IoT deployments. The core technologies of 40G Ethernet (40GbE) are quite mature, making the upgrade from 10G to 40G a straightforward and cost-effective choice. However, for rapidly expanding enterprises and data centers requiring higher bandwidth and scalable network performance, 100G Ethernet (100GbE) and beyond becomes the ideal solution. This article delves into the critical components of a successful 40/100GbE network migration, focusing on transmission media, media-dependent interfaces, and fiber optic transceivers. Continue reading to uncover practical strategies for optimizing your high-speed network deployment.
40G/100G Ethernet Migration Transmission Media
When migrating to a 40G or 100G network, choosing the right transmission media is crucial to meet your desired transmission speed and distance. 40G Ethernet supports three main media options:
Copper cables are suitable for short transmission distances.
Multi-mode fiber cables with four short-range channels.
Single-mode fiber cables with four wavelengths for long-distance transmission.
Copper cables are more affordable but limited to shorter distances for 40G transmission.For a 100 GbE network, fiber optic cables are commonly used, except for same-rack connections, where direct-attach copper cables may be used.
OM3 fiber distance: Up to 100m.
OM4 fiber distance: Up to 150m.
OM5 fiber distance: Up to 150m.
Media Dependent Interface (MDI) in 40G/100G Ethernet Migration
Media dependent interface refers to an Ethernet port connection used to link network devices such as switches and hubs without requiring a null-modem or crossover cable. For multimode fiber cables, an MPO (multi-fiber push-on) adapter is typically used as the MDI. The advantage of an MPO connector is its ability to support up to 24 fibers in a single ferrule. With the 40 GbE transmission, a 12-position MPO connector is used. Only four transmit fibers are used on each side of the MPO connector, leaving the middle four unused.
For 100 GbE transmission, a 24-position MPO connector with two rows of 12 fibers each is utilized. However, only ten fibers on the top row and ten on the bottom row are used, leaving the middle four fibers unused. In addition to MPO connectors, LC connectors are also an option. LC connectors accommodate one fiber per ferrule and support wideband multimode fiber technology, enabling transmission speeds of up to 400GbE.
As fiber optic density increases, field termination and splicing become more complex. You can save time and energy by opting for custom cable lengths and pre-terminated MPO or LC connectors.
Fiber Optic Transceiver in 40/100G Ethernet Migration
Every fiber optic network requires photoelectric conversion to effectively convert between optical and network signals. Fiber optic transceivers are responsible for this process and are critical to network migration. Commonly used transceivers for 40G/100G transmission include CFP, QSFP+, and CXP transceivers.
QSFP+ is commonly used in 40G applications, while CFP supports 40GbE and 100GbE. CXP is ideal for high-density 100GbE deployments, particularly in short-distance applications using multimode fiber.
When selecting a transceiver, ensure it is compatible with your switch. Several third-party transceivers are compatible with popular high-end switches, offering significant cost savings compared to original brand transceivers. Ensure the transceiver comes from a reputable manufacturer to avoid potential quality and interoperability issues.
For 100G multimode fiber connections, QSFP28 transceivers with OM3 and OM4 multimode fiber are often used for shorter distances, delivering reliable and high-performance transmission.
Migration Path for 40/100G Ethernet Networks
A practical and seamless migration to a higher Ethernet speed ensures minimal disruption with little to no replacement of existing connectivity components and fiber optic cabling. These components are often deployed for switch-to-switch connections, switch-to-server, and SAN connections.
Key components needed during ethernet migration include modules, harnesses, adapter plates, and trunks. The ethernet migration process for 40/100 GbE uses nearly the same components, except MPO connectors. Using pre-terminated optical fiber cabling is often preferred as it eliminates rework and testing, reducing installation costs. It also provides convenient future upgrades or additions.
When choosing between 12-fiber and 24-fiber trunks, consider network density and potential congestion. High-density networks often require more active equipment, but space may be limited. 24-fiber cabling is typically more effective as it allows for more connections without increasing the number of ports. It also reduces the number of cables needed compared to a 12-fiber model, leading to a lighter load, easier management, and lower cooling costs.
Advantages of Migrating to 40G/100G Ethernet
Upgrading to 40G/100G Ethernet offers significant benefits, especially in data centers and high-performance networks.
Increased Bandwidth and Scalability
40G/100G Ethernet provides much higher bandwidth compared to older standards, supporting larger data transfers and enabling future network expansion without significant rework. This ensures that the network can handle increasing data demands from cloud, IoT, and big data applications.
Reduced Latency and Improved Efficiency
With faster speeds, 40G/100G Ethernet reduces latency, improving data processing and application performance. This is crucial for environments where quick data exchange is essential, such as real-time analytics and large-scale computing.
Cost-Effective Migration
Upgrading is made more affordable with compatibility to existing multi-mode fiber infrastructure (OM3, OM4, OM5). This allows businesses to leverage their current cabling while benefiting from the enhanced capabilities of 40G/100G Ethernet, minimizing the need for costly fiber replacements.
These benefits are fully realized with FS 100G optical modules, which not only enhance bandwidth, reduce latency, and lower operational costs but also offer seamless integration with existing infrastructure. Whether upgrading from 1G to 100G or ensuring compatibility with leading brands like Cisco, Arista, and Juniper, FS modules guarantee smooth network operation and ample bandwidth for future growth. Designed with energy efficiency in mind, they reduce power consumption and cooling needs, helping businesses save on operational costs. With over 200 real-device tests and FS Box's real-time re-coding technology, deployment becomes faster and more reliable, providing flexible, high-performance solutions tailored to specific business needs.
In conclusion, migrating to 40G/100G Ethernet is a forward-looking investment, providing improved performance, scalability, and cost savings, while ensuring that the network is ready for future growth.
Summary
As the demand for high-speed connectivity increases, enterprises and data centers are transitioning from traditional 1G/10G networks to faster 40GbE and 100GbE networks. Migrating to a higher networking standard offers not only greater bandwidth but also significant improvements in efficiency and scalability. Given the rapid pace of technological advancement, upgrading enterprise networks is only a matter of time.
A successful ethernet migration path lies in understanding the required components and working with a professional IT team. FS offers a comprehensive range of 40G/100G optical modules and solutions that meet current needs while providing future-proof scalability. Choose FS for a more efficient and reliable network upgrade.