Supply the SFP Transceiver Module and SFP Cables

Many people is likely t need SFP transceiver module or cables but they do not know which they should buy, and now I will introduce the two products in Fiberstore.

SFP-10G-SR is hot-swappable fiber transceiver module with 850nm VCSEL transmitter and PIN photo detector, it is fully compatible with IEEE 802.3ae 10Gbase-SR, electrical interface of the SFP+ SR is compliant to SFF-8431. SFP 10G SR features are low power consumption and it supports multi-rate from 2G fiber channel to 10G Ethernet. And we know Cisco SFP 10G SR is a SFP module that used for 10Gigabit applications, we Fiberstore supply Cisco the SFP 10G SR equivalent transceivers, they are compatible to work with both 50/125MMF and 62.5/125MMF, the characteristics of the other feature the good prices, excellent performance and 100% compatibility.

The SFP 10G SR hot swappable transceiver use LC connector interface, supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000 MHz*km MMF (OM3), up to 300m link lengths are possible. The SFP 10G SR modules are easy for deployment and maintenance, Rohs compliant and meet the IEEE standards for 10G Ethernet. 10 Gigabit Ethernet over copper is most commonly found in an SFP+ direct attach form-factor, in which twinaxial copper is terminated by SFP+ housing attached to the end of the cable, Some vendors refer to these as Direct Attach Copper (DAC) cables. These are used for fairly short runs, 1 to 7m for passive cables or up to 15m for active cables, with the latter drawing transmission power from the connected device. 10 Gigabit copper over UTP(10GBase-T) is also available, but is less common at the moment, as upgrading infrastructure to support it tends to cost more than using existing SFP+ ports.

In fact, External ports include 14 ports for 1 Gb or 10 Gb Ethernet SFP+ transceivers (support for 1000Base-SX, 1000Base-LX, 1000Base-T, 1000Base-SR, or 10GBase-LR) or SFP+ copper direct-attach cables (DAC). Ten ports are enable by default. An optional FoD license is required to activate the remaining four ports. SFP+ modules and DAC cables are not included and must be purchased separately. When 10 GbE started to be widely deployed in the data center, the most prominent copper cable type used was based on the enhanced small form-factor pluggable (SFP+) standard. The SFP+ reach is limited to about 7 m when using direct attached copper cables and around twice that when using active copper transceivers in the cable connectors. For longer reaches, optical cables are used between the racks. But these SFP+ cables are relatively expensive compared to Cat5.

The Cisco 10GBASE SFP+ modules offer customers a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and service provider transport applications. Cisco SFP+ Copper Twinax direct-attach cables are suitable for very short distances and offer a cost-effective way to connect within racks and across adjacent racks. Cisco offers passive Twinax cables in lengths of 1, 1.5, 2, 2.5, 3 and 5 meters, and active Twinax cables in lengths of 7 and 10 meters. As we know Cisco SFP-H10GB-CU1M, this SFP-H10GB-CU1M can apply into 1-8G Fiber Channel and 1-10G Gigabit Ethernet, or these devices such as Hub, Switches, Routers, Servers, Network Interface Card (NICs), its function mainly include networking, storage, telecommunications.

Fiberstore is a leading manufacturer and supplier of fiber optic transceiver.module and SFP cable. They have a large quantity of SFP transceivers and cables in stock. All of the SFP-10G-SR transceivers are tested in-house prior to shipping to insure that they will arrive in perfect physical and working condition. And they guarantee the SFP-10G-SR transceivers to work in your system and all of fiber optic equipment coming with a lifetime advance replacement warranty. And very pleasnat news it that Fiberstore is doing with 30% of the price on sale of most fiber optical products, and if you want to know more, welcome to visit our online store.

Article Source: http://www.fiber-optic-solutions.com/

Better Explanation for the SFP Equipments

We all know fiber optics transfer information at the speed of the light, and they can send huge power at once. How the SFP cable is made as well as the units that send and receiver data are the essential parts of the machines. A SFP module is simply the system that understands the signals being sent to it and understands the language to send response data back. These units are the foundation of any network since they are so simple but provide an essential function.

1 Gigabit is the normal speed of today’s household networks. It is different to transfer information within a high performance environment, usually needing many connections significantly faster than one gigabit to work well. Newer XFP modules are the advanced version, and those are equipped for transferring at up to 10 Gigabits. The next era of communication standard called SFP+ will shift a lot of the processing that was built into the device onto the host board. Though the motherboards in each server will have to be upgraded to support them, they will offer more savings by not having to put an independent controller in each unit.

In fact the SFP module is a replacement for what are known as GBIC equipment. The electronic, mechanical and optical popular features of these hot-plug systems are laid down by a multisource arrangement relating to network component dealers. SFP modules are usually inspired by GBIC interfaces only that they will be designed with more desirable port densities. SFP transceivers are also available with a “copper” cable interface, allowing a host device designed primarily for optical fiber communication to also communicate over unshielded twisted pair networking cable. Such as SFP-H10GB-CU1M in Fiberstore what the SFP+ Passive Copper Direct Attach Cable can offer the same function with Cisco SFP-H10GB-CU1M and it is fully compatible with Cisco devices.The stipulations guaranteed by SFP group is assumed to guide fiber optic industry’s engineering leaders offering IBM, Tyco, Molex and Agilent. The SFPs succeeded GBIC interfaces because they are faster and smaller, and more efficiently than before when transferring information. The lengthier the copper wiring, the slower the information arrives, but they are suitable for small area telecommunication. these equipments are best for small companies because of the low expense and significant performance.

To keep track of what is going on and do diagnostics on the network, Cisco SFP modules use digital optical monitoring features. In large server situations where information loads must be balanced among many connections, these tools allow a server operator to pinpoint issues and tweak the system to run more efficiently. These devices are what make running substantial server operations possible, since they allow loads from very light to substantial use times to run as if nothing is happening better. For example Cisco SFP 10G SR, The SFP-10G-SR series multi-mode transceiver is SFP+ module for duplex optical data communications such as 10GBASE-SR and 10GBASE-SW. Since SFP+ standards are significantly different and potentially hurt the convenience these plugs provide, they are often looked down upon by longtime server providers. In order to compensate for this, the integrated controllers on the motherboards are being created to be flexible for future technologies. Removing some of the power from the SFP modules has met some scrutiny considering they are no longer completely interchangeable, but the processors that will assist the SFP+ format are designed to function more openly. In order to compensate for this, the bundled controllers on the motherboards are being designed to be flexible for future technologies.

It is well-known that we must buy good quality of fiber optical equimpments, there is a very good choice for you. Fiberstore is a professional store to sell related optical products and now it is doing with a discount of 30% at the price. If you want to know more information welocme to visit our online store.

Article Source: http://www.fiberopticshare.com/

10GB Ethernet SFP Cable Configuration Guidelines

The 802.3 ae supplement that initially defined 10 Gigabit Ethernet was adopted in 2002 and recently Cisco to launch a product compliant with IEEE 802.3ae 10GBASE-SR/SW, Cisco SFP 10G SR, the SFP-10G-SR multi-mode transceiver in Fiberstore is SFP+ module for duplex optical data communications such as 10GBASE-SR and 10GBASE-SW. it is fully compatible with Cisco devices. This module is designed for multi-mode fiber and operates at a nominal wavelength of 850 nm.

The direct attach cables and their SFP module use an electrical signaling interface called SFI, which is defined as the “SFP + high-speed serial electrical interface.” The SFI definition enables 10 Gb/s operation over a single differential signaling path in each direction for a total of two pairs, or four wire connections. The twinax cable includes the two pairs of single-carrying wires in a coaxial cable format, providing high performance and stable signaling over the length of the cable.

The serial link transfers scrambled data at 10.3125 Gbaud to accommodate both data and the overhead associated with 64B/66B coding. The self-clocked nature eliminates skewing between clock and data signals. The SFI link requires a 100 ohm cable impedance, while the signal termination electronics provide both differential and common mode suppression of signal noise and reflections. 10GSFP-PC-30-1-CO series also provides SFP-H10GB-CU1M to compatible 10Gbase-CU SFP+ cable, it can connect SFP+ passive twinax cable assembly, and the length is 1 mete, compliant to SFP+MSA, This cable offers the same function with Cisco SFP-H10GB-CU1M and it is fully compatible with Cisco devices.

The SFP+ MSA specification for direct attach cables note that 10G SFP + CU connections can only be used on systems with common power grounds. The power supplies for the Ethernet switches, and for any computers or other switches that are connected to them over direct attach cables, must themselves be connected to the same local power grid with a common ground between all devices, as a difference in ground potentials between systems connected with DA cables could result in electrical damaged to the interfaces or the devices.

The direct attach cables used in the 10G SFP+CU system come in a limited range of sizes, worth lengths in the range from 0.6m to 7m being the most widely sold. It is up to you to verify which cable lengths are supported by your vendor, and whether the cable can be active or passive. Some vendors support both types of cables on their SFP+ ports, and others do not.

The twinax cable itself is relatively stiff, and many present difficulties if you need to route it through tight spaces. There are two conductors in each twinax cable, with two twinax cables inside a common sheath providing a total of four conductors for signals. As an example, one vendor’s direct attach cable has an outer diameter of 0.180 inches, or roughly 3/16 inch. The minimum bend radius for this cable is one inch. If you bend the cable any tighter than this, it may affect the signal quality.

For optical cable, fiber channel uses the SFP cable. The SFP provides for greater port density and meets the need for smaller connectors than the older SC duplex connector and gigabit interface connector (GBIC). A multi link communication path between two N_ports may be made up of links of different technologies. For example, it may have copper coaxial cable links attached to end ports for short-distance links. with single-mode optical fibers for longer-distance links between switches separated by longer distances. By providing a variety of physical interface options. Fiber channel allows an implementation to select the most appropriate option for a particular scenario.

Fiberstore is an industry’s leading supplier of optical communication products, its products are widely used in telecommunication systems and data communications network. With the strong compatibility of the products what exactly match the mainstream manufacturer’s equipment. Quality assurance in strict accordance with industry standards, and can provide the customized service according to customer’s actual application. And it is vary nice that Fiberstore is working with the price at a discount of 30% now and welcome you to visit and buy from our online store. The website is as follow. http://www.fiberstore.com/

Article Source : http://www.fiber-optical-networking.com/

How to Set the Domain ID to Implement the Switches

Each switch in the fabric must have a unique Domain ID. The Domain ID can be set using the configure command. You can also allow the Domain ID to be set automatically. The default Domain ID for the SAN768B IS 1.

To set the Domain ID, follow these steps:

1.Enter the fabric show command to determine the current Domain IDS available.

2.Enter the switch Disable command to disable the SAN768B

3.Enter the configure command. Enter y at the fabric parameters pro met: Fabric parameters (yes, y, no, n)

4.Then, enter a unique Domain ID

5.Complete the remaining prompts or press Ctrl+D to accept the other setting and to exit.

6.Enter the switch Enable command to re-enable the SAN768B.

7.Add SFPs and fiber optic cables to the ports as required. Cables: The ports and cables that are used in trunking groups must meet specific requirements.

8.Remove the shipping plug from the ports to be used.

9.Position the SFP so that the key (the tab near the cable-end of the SFP)is on top, and insert the SFP into the port until it is firmly seated and the latching mechanism makes a clicking sound. For specific instructions, see the SFP manufacture’s documentation. Attention: The SFP module is keyed so that it can only be inserted correctly into the port. If the module does not slide in easily, make sure it is not upside down.

10.Connect the fiber optic cable to the SFPs as appropriate to the fabric topology by positioning each cable so that the key (the ridge on one side of the cable connector) is aligned with the slot in the SFP, then inserting the cable into the SFP until it is firmly seated and the latching mechanism makes a clicking sound.
Attention: The cable is keyed so that it can only be inserted correctly into the SFP, if the cable does not slide in easily, try turning it over.

11.Verify the correct operation of the switch.

12.Enter the following command at the Telnet prompt to verify the switch and port status

Switch show Backups: This command provides information about the status of the switch and the ports. Always back up to the configuration after any initial configuration changes and then perform backups periodically thereafter. This ensure that a complete configuration is available if ever required for uploading to a replacement switch. Switch configuration is backed up by issuing a configupload to the FTP server. You must install a SFP module ineach interface connector on the controller where a fiber-optic cable is to be installed.

To give its customers flexibility as to the type of Ethernet links, even after the customer has bought the switch, Cisco switches include some physical ports whose port hardware can be changed later, after you purchase the switch. One type of port is called a gigabit interface converter(GBIC), which happened to first arrive on the market around the same time as Gigabit Ethernet, so it was given the same “gigabit”
name. More recently, improved smaller types of removable interfaces, called small form-factor pluggable (SFP), provide the same function of giving users the ability to swap hardware and change the type of physical link.

For example, Cisco SFP 10G SR, The Cisco SFP-10G-SR Module supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000MHz*km MMF (OM3), up to 300m link lengths are possible. Using 4700MHz*km MMF (OM4), up to 400m link lengths are possible. and its feature is that SFP+ transceiver module for MMF, 850-nm wavelength, LC duplex connector.

Cisco SFP-H10GB-CU1M, a kind of SFP-H10GB-CU1M, 1-m 10G SFP+ Twinax cable assembly and belongs to passive device. This is a 10-meter long twinax SFP cable providing 10 Gbps Ethernet. At a length of 10 meters, this cable requires active transceivers at both ends.

As you know, I work at Fiberstrore now, it designs, manufactures, and sells a broad portfolio of optical communication products, including passive optical network, or PON, subsystems, optical transceivers used in the enterprise, access, and metropolitan segments of the market, as well as other optical components, modules, and subsystems. And there is a good news that many products are in the price at a discount of 30% now and welcome to viit our online Fiberstore.

Article Source: http://www.fiber-optic-transceiver-module.com/