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Visar samtliga inlägg taggade med ex-qsfp-40ge-dac-50cm.

40G QSFP+ Direct Attach Copper Cables

With the wide deployment of 40 Gigabit Ethernet, the 40G QSFP+ direct attach copper cables are becoming more and more popular due to the compact size, low power and cost-effectiveness. 40G QSFP+ to QSFP+ direct attach copper cables and 40G QSFP+ to 4 x 10G SFP+ direct attach copper cables are hot pluggable and parallel passive / active copper cables for storage, data, and high-performance computing connectivity.

QSFP+ to QSFP+ Direct Attach Copper Cables

QSFP+ to QSFP+ direct attach copper cables are hot-removable and hot-insertable. A cable consists of a cable assembly that connects directly into two QSFP+ modules, one at each end of the cable. The cables use integrated duplex serial data links for bidirectional communication and are designed for data rates up to 40 Gbps. QSFP+ to QSFP+ direct attach copper cables are suitable for very short distances and offer a highly cost-effective way to establish a 40G link between QSFP+ ports of QSFP+ switches within racks and across adjacent racks. These cables connect to a 40G QSFP port of a switch on one end and to another 40G QSFP port of a switch on the other end.

EX-QSFP-40GE-DAC-50CM

QSFP+ to 4 SFP+ Direct Attach Copper Cables

The move from 10G to 40G Ethernet will be a gradual one. It is very likely that one may deploy switches that have 40G Ethernet ports while the servers still have 10G Ethernet ports. For that situation, we should use a QSFP+ to 4 SFP+ direct attach breakout copper cable. These cables connect to a 40G QSFP port of a switch on one end and to four 10G SFP+ ports of a switch on the other end, which allows a 40G Ethernet port to be used as four independent 10G ports thus providing increased density while permitting backward compatibility and a phased upgrade of equipment.

QSFP-4SFP10G-CU1M

Directions for Use

The 40G QSFP+ direct attach copper cables are used to connect switch to switch or switch to server. When we use a fiber optic transceiver and patch cable to establish a fiber link, we should firstly plug the transceiver to the switch and then plug the patch cable to the transceiver. But for a QSFP+ direct attach copper cable, both SFP+ connector and QSFP+ connector can be directly inserted into the switch and don’t need a transceiver at all, which provides a really cost-effective solution for interconnecting high speed 40G switches to existing 10G equipment or 40G switches to 40G switches.

40G-QSFP-Direct-Attach-Breakout-Copper-Cable

40G QSFP+ direct attach copper cables can provide inexpensive and reliable 40G speed connections using copper cables with distances reaching up to 30ft (~10 meters length). Cost of short reach connectivity is significantly reduced by avoiding the more costly fiber transceivers and optical cables. As the main fiber optical manufacturer in China, Fiberstore provides a good selection of 40G QSFP+ copper cables, both passive and active copper cables are available. For longer distances, active copper or optical cables are required. For more information or quotation, please contact us via sales@fs.com.

Publicerat klockan 03:24, den 17 februari 2016
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Postat i kategorin Okategoriserat och taggat som ex-qsfp-40ge-dac-50cm, qsfp-4sfp10g-cu1m,

QSFP+ in the 40 Gigabit Ethernet Fiber Optic Media Systems

As data centers consolidate into more complex systems, They take advantage of new speed Increases and technologies. With speeds in the data center now Increasing from 10 Gbps to 40 Gbps and Eventually to 100 Gbps, the application for 40 Gigabit Ethernet is Becoming more and more popular. There are two 40 Gigabit fiber optic physical media dependent (PMD) Specifications in the standard, Which Provide 40 Gb / s Ethernet over multimode fiber-optic (MMF) cable and single mode fiber-optic (SMF) cable. The 40GBase-SR4 short-reach fiber optic system sends four lanes of PCS data over four pairs of multimode cables, for a total of eight fiber strands. The 40GBase-LR long-reach system sends four lanes of PCS data four wavelengths of light, the carried over a single pair of fiber optic cables.

The most popular connection option for 40 Gb / s interfaces is the QSFP + module: it takes up much less space on a switch or server interface, making it possible for vendors to Provide Multiple QSFP + transceiver module for 40GBase-SR4 is provided with a multi-fiber push one (MPO) media connector, carrying multiple pairs of fiber optic cables to support the four lanes of data for the Short Reach fiber standard. The 40GBase-LR4 long-reach system uses a QSFP + transceiver equipped with a duplex fiber connector for connecting to the single pair of fiber cables.

QSFP + transceiver is a hot-swappable, parallel fiber optical module with four independent optical transmit and receive channels. These channels can terminate in another 40-Gigabit QSFP transceiver, or the channels can be broken out to four separate 10-Gigabit SFP + transceivers. The QSFP + transceiver link length for either 40 Gigabit Ethernet or high-density 10 Gigabit Ethernet application is up to 100 meters using OM3 fiber or 150 meters using OM4 fiber. These modules are Designed to operate over multimode fiber systems using a nominal wavelength of 850nm.

The QSFP + cable assemblies are Designed to accommodate stacked and ganged connector configurations in extremely high-density Requirements. They support 40G Ethernet, InfiniBand, SAS and SONET / SDH standards with different data rate options. The optical QSFP + MTP cable assemblies and loop-backs meet the QSFP + interface specification. Cables are constructed with 12-fiber 3.00mm round cable for data center interconnect cable assembly applications. QSFP + breakout cable assemblies are available for SFP + or patch panel installation. For example, the Juniper EX-QSFP-40GE-DAC-50CM compatible QSFP + to QSFP + copper cable from Fibre store is suitable for very short distances and offers a very cost-effective way to Establish a 40-Gigabit link between QSFP ports of Juniper switches within racks and across adjacent racks.

As the main optical fiber manufacturer and supplier in China, Fiber store Provides a wide range of QSFP + transceivers are 100% compatible with major brands like Cisco, HP, Juniper, Nortel, Force10, D-Link, 3Com. They are backed by a lifetime warranty, and you can buy with confidence. We also can customize optical transceivers to fit your specified Requirements.

Publicerat klockan 04:28, den 23 januari 2016
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Postat i kategorin Okategoriserat och taggat som qsfp+ cable, ex-qsfp-40ge-dac-50cm,

How to Choose the 40G Transceivers

With the economics-driven growth of global regional and local fiber communication network over the past few decades, the ba IEEE 802.3 40Gb / s Ethernet standard was published in June, 2010. In order to meet the data transmission needs in the market, a high -Performance and flexible implementation of the IEEE 802.32012 for 40Gbps Ethernet - 40GBase optical transceivers are developed and Widely used. The 40GBase Optical Networking equipment transfers data at a rate of 40 gigabits per second over Ethernet.

40GBase optical transceivers compliant to the IEEE standards Mainly include CFP and QSFP (Quad Small Form-Factor Pluggable). Today, let's Mainly DISCUSS on how to choose the 40G QSFP transceiver. As the 40-Gigabit QSFP transceivers are used to interface networking hardware to a fiber optic cable, the choice of them depends on many factors, like the media system, the connector type, transmission distance, wavelength, etc. Thus We Should Consider all of These Factors comprehensively Before we choose the 40G QSFP transceivers.

Transport Media

Choose The Right transceivers of according to transport media, namely the fiber type. Of according to the IEEE 802.3 ba 40Gb / s Ethernet standard, there are three types of transceivers used respectively in threetypes of transport media: copper, single mode fiber (SMF) and multimode fiber (MMF).

  • Copper: 40GBASE-CR4 is a Direct Attach Cable segment with the QSFP + modules attached to each end of the cable. It Reaches 40 Gb / s Ethernet over four short-range twinaxial copper cables bundled as a single cable over a standard pair of G.652 single-mode fiber. For example, the Juniper EX-QSFP-40GE-DAC-50CM compatible QSFP + to QSFP + Copper Direct Attach Cable is suitable for very short distances and offers a very cost-effective way to Establish a 40-Gigabit link between QSFP ports of Juniper switches within racks and across adjacent racks.
  • SMEs: 40GBASE-LR4 transceiver Reaches 40 Gb / s Ethernet over four wavelengths Carried by a single mode fiber optic cable.
  • MMF 40GBASE-SR4 transceiver Reaches 40 Gb / s Ethernet over four short-range multi-mode fiber optic cables.
Connector Type

Choose The Right Which transceivers are compliant with the proper connectors. The connectors widely-used Mainly definatley Following types: Duplex LC connector, the MPO connector, and MTP connector (a high performance MPO Connector). For instance, Cisco QSFP-40GBD-SR transceiver is compliant with the Duplex LC connector, while Arista QSFP-40G-pLR4 transceiver is compliant with the MPO connector.

Transmission Distance

When we choose the ideal transceivers, we must Consider the transmission distance and the REACH Requirements We need into reality. The most common types of transceivers Divided by its transmission distance can reach up to 100m, 150m, 300m, 400m, 1km, 2km, 10km, 40km, etc. For example, Cisco QSFP-40G-CSR4 compatible QSFP + transceiver provided by fiber Store supports link lengths of 82m, 300m and 400m, respectively on OM2, OM3 and OM4 multimode fiber at a wavelength of 850nm. And some others, like QSFP-40G-ER4 Which transceiver supports link lengths of 40km on single-mode fiber cable is Designed to use in long distance transmission.

Wavelength

The wavelength the transceivers operate with is an Important Factor in Choosing the proper transceivers. For instance, QSFP-40G-LX4 transceiver converts 4 inputs channels (1271nm, 1291nm, 1311nm, 1331nm) of 10Gb / s electrical data to four CWDM optical signal, and multiplexes them into a single channel for 40Gb / s optical transmission. While someother transceivers like QSFP-40GBD-SR consists of two 20-Gbps transmit and receive channels in the 832-918 nm wavelength range.

Fiber Store Provides various types of 40G QSFP transceivers including single-mode and multi-mode with different channels and wavelengths. In order to Achieve a solid and successful selection of the 40G QSFP transceivers, We Should Consider all of the above-mentioned factors comprehensively.

Publicerat klockan 07:41, den 7 december 2015
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