Tag Archives: 10GBASE-T

Comparison of 10GBASE-T and 10G SFP+ Transceiver

With the growing need of higher capacity network connectivity, 10G network transmission is becoming increasingly popular. 10G SFP+ optical transceiver and 10GBASE-T copper transceiver are the two main options of 10G network. It becomes a challenge to choose the appropriate 10G connectivity for every IT worker. This article will compare 10GBASE-T with 10G SFP+ transceiver from the perspectives of power, latency, cost and interoperability. And try to give you some suggestions to choose between them.

Brief Introduction of 10GBASE-T and 10G SFP+ Transceiver Module

10GBASE-T transceiver module and SFP+ optical transceiver are two of the most widely used 10G network connectivity.

10GBASE-T Copper Transceiver

Applied initially in the data center and the horizontal cabling system, 10GBASE-T transceiver module is a new 10GE PHY using the existing MAC (Media Access Controller). It preserves the 802.3/Ethernet frame format at the MAC Client service interface. 10GBase-T works at 100 meters for Cat6a cable and up to 50 meters for Cat6 cable. It offers flexibility, low cost transmission media, and is backward-compatible with existing 1GbE networks.

10gbase-t
10G SFP+ Optical Transceiver

10G SFP+ transceiver is an enhanced version of the SFP transceiver that supports data rates up to 16 Gbit/s. It supports 8 Gbit/s Fibre Channel, 10 Gigabit Ethernet and Optical Transport Network standard OTU2. SFP+ optical transceiver’s connector is duplex LC, and it operates on LC fiber patch cables. SFP+ transceiver is classified in different types, such as SR, LR, ER and ZR. They need to be used with appropriate fiber patch cable, like SR used with multimode fiber patch cable for short distance transmission, while LR, ER and ZR used with single mode fiber patch cable for relatively long links.

10g sfp+

10GBASE-T vs SFP+ Transceiver

After the brief introduction of the two transceiver modules, we will compare them from following perspectives.

Power and Latency

Recent advancements greatly lowered the power consumption of 10GBASE-T server and switch ports. Early versions of 10GBASE-T switches needed up to 12 Watts per port, switch vendors now offer a range of 1.5 to 4 Watts per port depending on distance. In spite of the reduced power consumption of 10GBASE-T transceiver, 10G SFP+ interface uses less power—typically less than 1 Watt per port.

With simplified electronics, 10G SFP+ transceiver also has lower latency—typically about 0.3 microseconds per link. 10GBASE-T transceiver latency is about 2.6 microseconds per link due to more complex encoding schemes within the equipment.

With lower power consumption and lower latency, 10G SFP+ optical transceiver is well suited for large high-speed data centers.

Cost and Interoperability

10GBASE-T switches has been available since 2008, the shipment of 10GBASE-T transceiver module has been increasing over the past years. This proliferation helps to drive down the cost of 10GBASE-T technology. With 10GBASE-T technology’s wide application, the use of 10G SFP+ transceiver module means additional cost for the servers equipped with 10GBASE-T NIC card. Comparing one of the latest 10G SFP+ and 10GBASE-T switches, the cost of 10GBASE-T transceiver ranges from 20% to 40% less.

10GBASE-T copper transceiver also has the advantage of being interoperable for using the familiar RJ45 connector and providing backwards compatibility with legacy networks. So it can be deployed in existing 1GbE switch infrastructures in data centers, enabling IT to keep costs down while offering an easy migration path to 10GbE. While 10GSFP+ optical transceiver are limited with little or no backwards compatibility.

Make an Informed Decision

When you choose between 10GSFP+ optical transceiver and 10GBASE-T copper transceiver, consider your needs carefully. If lower power consumption and lower latency are significant, 10GSFP+ transceiver might be the better choice for you. If lower cost and better Interoperability are important, 10GBASE-T transceiver might be more suitable for you. FS provides an extensive selection of 10GBASE-T, 10G SFP+ transceiver and transceiver module of other data rate, such as 1G, 25G, 40G, 100G and so on. For more details about FS 10GBASE-T transceiver module and 10G SFP+ optical transceiver, please contact us at sales@fs.com.

How to Convert SFP+ to 10GBASE-T/RJ45?

When migrating to 10G data center, you may have two choices: SFP+ or 10GBASE-T technology. 10GBASE SFP+ interface has always been widely deployed for 10 Gigabit ToR (top of rack) witches due to low power consumption. Due to advanced technology, switch manufacturers significantly reduce the power consumption and cost of 10GBASE-T server and switch. According to some researches, the cost of 10GBASE-T (RJ45 interface) switches is much lower than that of SFP+ switches. So many users prefer to add 10GBASE-T/RJ45 switches. But the problem is how to convert SFP+ to RJ45 port. This article will to introduce a necessary optical equipment–SFP+ to RJ45 media converter.

Introduction to SFP+ to RJ45 Media Converter

The secret to realize SFP+ to RJ45 conversion is 10 Gigabit SFP+ to RJ45 media converter. This converter has one 10G pluggable SFP+ port and one RJ45 port. SFP+ port is compatible with any SFP+ transceiver such as 10G SR SFP, 10G LR SFP and so on, which is the best suitable for your network and link lengths. 10 Gigabit SFP+ to RJ45 media converter is a cost-effective way to convert copper to fiber, or fiber to copper. Since it can deliver fast and reliable network access at longer distances than copper-based networks, it’s ideal for the applications in server rooms, workstations in remote areas or in other buildings.

sfp+ to-rj45 card

How to Convert SFP+ to RJ45?

As the following figure shows, existing ToR switch only has some SFP+ interfaces. This switch is connected to an aggregation switch in the data center with multimode fiber patch cords. And the servers below are connected to the ToR switch with twinax DAC cables. Now considering that 10GBASE-T servers are less expensive, we decide to add new 10GBASE-T servers to the rack. Then we face a problem: how to integrate 10GBASE-T RJ45 ports servers into the the rack? To deal with this problem, we need to add 10 Gigabit Ethernet media converters to this rack system. First, connect the media converter with existing ToR switch by inserting one end of twinax DAC cables into the SFP+ port of the 10 Gigabit Ethernet media converter. Second, connecting media converter with the new 10GBASE-T servers by plugging Ethernet patch cords (better Cat6a) into RJ45 port of this media converter and 10GBASE-T servers.

sfp+ to rj45

As the 10GBASE-T servers are connected to 10 Gigabit SFP+ to RJ45 media converters over short Ethernet patch cords, so we can enjoy the advantage of 10GBASE-T short reach mode, which means all devices can operate at lower transmit power. Short reach mode, specified in the IEEE 10GBASE-T standard, conserves energy and produces less heat.

FS.COM SFP+ to RJ45 Media Converter Solutions
Part number Description
21024 1x 10GBase-T to 1x 10GBase-X SFP+, Unmanaged
35610 1x 10GBase-T to 1x 10GBase-X XFP Managed
35432 1x 10GBase-T to 1x 10GBase-X SFP+, Card Type
35433 1x 10GBase-T to 1x 10GBase-X XFP, Card Type
35610 1x 10GBase-T to 1x 10GBase-X SFP+ Managed
35431 1x 10GBase-T to 1x 10GBase-X XFP Managed
Conclusion

SFP+ to RJ45 conversion may be a very common issue in 10G data center. To solve this problem, the most cost-effective way is SFP+ to RJ45 media converter. It can bridge the interface disparities between equipment with 10GBASE-T RJ45 ports and existing rack servers or switches with fiber optic ports. FS.COM offers various high-performance 10G SFP+ to RJ45 media converters. For more product details, please contact us via email sales@fs.com.

Related article: 10G SFP or 10GBASE-T SFP for 10GbE Network?
Choose 10GBASE-T Copper Over SFP+ for 10G Ethernet