Showing posts with label 455883-B21. Show all posts
Showing posts with label 455883-B21. Show all posts

Monday, April 11, 2016

3 Ways Third-Party Transceivers Benefit Your Data Center

Are you still spending hundreds of dollars on the expensive optical transceiver modules for your network system in the data center? In order to cut down the costs on the expensive transceiver modules, many companies are seeking for a compatible third-party transceiver to use. For example, if your network contains Juniper routers, firewalls, and switches, you might think that only Juniper SFP branded transceivers will ensure that all of your equipment is compatible and functions optimally. However, that seemingly reasonable assumption could cost your company thousands of dollars. Compared to the third-party optical transceiver produced by third-party companies, Juniper SFP transceiver comes with dramatically inflated price tags while a third-party compatible one is roughly 80 percent less expensive than Juniper branded SFP transceiver.
What Does "Third-Party" Mean?
In commerce, a "third-party" means a supplier (or service provider) who is not directly controlled by either the seller (first party) or the customer/buyer (second party) in a business transaction. For example, in the fiber optics industry, all fiber optic transceivers are defined by Multi-Source Agreement (MSA). MSAs strictly define the operating characteristics of fiber optic networking equipment, so that system vendors may implement ports in their devices that allow MSA compliant networking components produced by different manufacturers are interoperable. As long as a manufacturer complies to MSA guidelines, their transceiver modules will function and operate identically to any other manufacturer's MSA-compliant transceivers. For instance, HP BladeSystem 455883-B21 compatible 10GBASE-SR SFP+ transceiver from FS.COM will function identically to a HP 455883-B21 transceiver and will be 100% compatible with HP networking equipment.  
455883-B21
Optical transceivers are some of the most all-around useful pieces of hardware for a network. As long as your equipment has SFP/SFP+ ports -which most do- transceivers allow you to change between a multitude of uplink types, to fit whatever wiring you have or will have in the future. They're simple, plug-and-play, and hot-swappable. Third-party optical transceivers can easily prevent thousands of dollars in new hardware costs. In spite of what's often implied by official documentation, a quality third-party optical transceiver is 100% compatible with name-brand equipment. There's simply no difference between good quality third-party transceivers and branded ones. So why choose to pay more?
Three Reasons Why Third-Party Optical Transceivers Just Make Sense
1. Low costs
The lower costs of third-party optics really cannot be overstated. Depending on the model, name brands are anywhere from 50% to 1000% more expensive than third-party alternatives. For example, you can get the Cisco QSFP-40G-CSR4 compatible 40GBASE-CSR4 QSFP+ transceiver with only $110 at FS.COM which ensures the same performance with a Cisco branded QSFP-40G-CSR4 transceiver.  
In many cases, a full loadout of third-party transceivers can shave so much money off of an upgrade budget to fund entirely new pieces of hardware. Or they can put a piece of equipment within range, which wouldn't have been if name-brand ports had to be purchased.
2. Full standards compliance
Only a few factories in the world produce optics, and they make the transceivers for everyone. Those heavily-discounted third-party may be made in the same facilities as the official Cisco, HP, or Juniper units. And since transceivers are fully specified by internationally agreed-upon standards anyway, there's no risk of incompatibilities.
All it takes is code loaded on an EPROM -included in the transceiver- identifying it to your networking hardware and, basically, your equipment can't tell the difference.
3. Lifetime warranty
Besides having much higher prices, the name-brand transceivers also tend to have fairly short warranty periods. It's generally anywhere from a couple years, down to only 90 days. While failure is fairly rare, it's unfortunate that they have such short warranty periods, especially compared to the hardware they're used in.
However, when you buy third-party optics from FS.COM, you will get a full lifetime warranty. That's how certain we are that they truly are of quality equal or better to the name-brand units. As long as your transceivers are in use, they're covered under warranty.
Conclusion
If you're still hesitant about trying a compatible SFP transceiver from a third party manufacturer, the best way to ensure that you're getting a reliable product at a good deal is to choose a vendor you trust, one with a proven track record of quality products and great customer service. Really, there's no compelling reason to over-pay for the name brand optics. Just like buying generic medications at the pharmacy, there is truly no difference aside from the name that's on the packaging.

Wednesday, March 9, 2016

Connectivity Options for 10 Gigabit Ethernet

Since March 1999, the Ethernet industry has been working on providing solutions to increase the speed of Ethernet from 1 to 10 gigabits per second. For enterprise LAN applications, 10 Gigabit Ethernet enables network managers to scale their Ethernet networks from 10 Mbps to 10,000 Mbps, while leveraging their investments in Ethernet as they increase their network performance. There are various types of cables and transceivers available for making Ethernet connections at speeds of 10 Gigabit per second. This article will illustrate both the copper and fiber connectivity options for 10 Gigabit Ethernet.
Transceivers
Standards bodies initially offered several options for the 10-Gigabit transceiver. The one that ultimately evolved as most popular in commercial data center usage was the XFP transceiver. In recent years an extension of the SFP transceiver was standardized for use with 10 Gigabit Ethernet and named SFP+. SFP+ has three outstanding advantages. First of all, it was smaller than the XFP form factor allowing for much more dense packaging of ports on (primarily) switches. Secondly, a new type of very short distance copper cable was developed which uses the same mechanical form factor as the optical transceiver and is capable of carrying 10Gbps Ethernet data. This cable type is called direct attach copper cable which will be introduced later. SFP+ has now become the predominant 10G Ethernet connector type.
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Fiber Cables
Fiber cables consist of the cable itself and the connectors on the ends. There are multiple choices for cable type and for connector type. The difference in cable choices come from the distance limitations encountered with the various types of optical transmission. The commonly available types of fiber cables include: SR for connections of up to 300 m in length, LR for connections of up to 2 km in length and ER for connections of up to 10 km in length.
Copper Cables
  • 10GBASE-T
    For 10-Gigabit Ethernet cabling, the standards body determined that even enhanced Cat5e UTP traditional Ethernet cable would not be able to carry the signal reliably for any significant distance. So a new specification which still uses RJ45 connectors was introduced and is commonly referred to by its standards name 10GBASE-T. It calls for a 4-wire twisted pair cable with even more strinent limitations on cross-talk.
  • CX4
    CX4 is a cable type generally associated with an alternative networking technology called InfiniBand. CX4 cable can also be used in 10Gigabit Ethernet connections. It uses a coaxial copper cable and can support cable lengths of up to 15m.
  • SFP+
    As discussed above, one of the advantages of the SFP+ connector type was that a new type of very-short-distance copper cable was developed which uses the same mechanical form factor as the optical transceiver and is capable of carrying 10Gbps Ethernet data. This cable type namely SFP+ direct attach copper cable is a fixed assembly that is purchased at a given length, with the SFP+ connector modules permanently attached to each end of the cable. It provides high performance in 10 Gigabit Ethernet network applications, using an enhanced SFP+ connector to send 10 Gbps data through one paired transmitters and receivers over a thin twinax cable.
To conclude, 10 Gigabit Ethernet has become the technology of choice for enterprise, metropolitan, and wide area networks. Choosing the right kind of connectivity options helps you ensure the proper and efficient performance of your networks. Fiberstore offers various kinds of fiber optical transceivers for 10 Gigabit Ethernet, such as the HP J9151A, NETGEAR AXM761 SFP+ transceiver and so on. Besides, cables for 10 Gigabit Ethernet can be customized according to your special requirements. 

Monday, November 16, 2015

How to Choose the 10G Transceivers

From the origin of 10G Ethernet, 10G optical transceivers have been developed along the way to meet the increasing demand for higher-performance servers, storage and interconnects. However, selecting the best type of 10G optical transceivers is not always easy. There are a variety of factors that must be considered. To be able to select a matching transceiver for a given application and hardware, all below stated parameters must be considered.
10G optical transceivers
Transceiver “form-factor” / MSA Type
The transceiver has to mechanically and electrically fit into a given switch, router etc. Transceiver MSAs define mechanical form factors including electric interface as well as power consumption and cable connector types. XENPAK is the first MSA for 10 Gigabit Ethernet. The XENPAK MSA defines a fiber optic or wired transceiver module which conforms to the 10 Gigabit Ethernet standard of the IEEE 802.3 working group. Then X2 followed with smaller size. XFP specification was launched after X2 with more contact size. SFP and SFP+ are the newest and the most common form factors which enable 10G Ethernet.
Transport Media
Choose the right 10G optical transceivers according to the transport media, namely the fiber type. There are a number of 10 Gb/s media systems, with a few of the most widely used systems specified in the standard described here:
  • 10GBASE-CX4
    10 Gb/s Ethernet over short-range copper cable assemblies (15 m maximum).
  • 10GBASE-T
    10 Gb/s Ethernet over unshielded and shielded twisted-pair cables. Category 6A or better twisted-pair cables are required to reach the maximum distance specified.
  • 10GBASE-SR
    10 Gb/s Ethernet over short-range multimode fiber optic cables.
  • 10GBASE-LR
    10 Gb/s Ethernet over long-range single-mode fiber optic cables.
Connector Type
Choose the right transceivers which are compliant with the proper connectors. The connectors widely-used mainly have following types: Duplex LC connector, MPO connector, and MTP connector (a high performance MPO connector). For instance, HP 455883-B21 10GBASE-SR SFP+ transceiver module provided by Fiberstore is compliant with the Duplex LC connector.  
Transmission Distance
When we choose the ideal 10G optical transceivers, we must consider the transmission distance and the reach requirements we need in 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 SFP-10G-SR compatible 10GBASE-SR SFP+ transceiver supports link lengths of 300m over multimode fiber cables. And Juniper XFP-10G-L-OC192-SR1 compatible 10GBASE-LR transceiver provides superior performance for SONET /SDH and Ethernet applications at up to 10km links.  
Wavelength
The wavelength the transceivers operate with is an important factor in choosing the proper 10G optical transceivers. For instance, Fiberstore's 10G CWDM XFP is designed for single mode fiber and operates at a nominal wavelength of CWDM wavelength. There are fourteen center wavelengths available from 1350nm to 1610nm, with each step 20nm.
Fiberstore provides various types of 10G optical transceivers including single-mode and multi-mode with different channels and wavelengths. In order to achieve a fast and successful selection of the 10G optical transceivers, we should consider all the above-mentioned factors comprehensively.