2012年5月29日星期二

Huawei plans to challenge Cisco in the U.S. market


May 13 news, Huawei’s North American director John Ross, John Roese, said on Friday that the company is well positioned to challenge Cisco’s preparation, but still need some patience and time.
Roth made the comments in the Interop infrastructure Assembly, he said: “The U.S. is the most complex market difficult to enter the U.S. market, comparable with Western companies enter the Chinese market.”
Decade, Huawei has been sold to the U.S. telecom operator infrastructure equipment, and set up a U.S. headquarters in Santa Clara, California. The main products sold by the company in the past is the terminal equipment of the data network infrastructure such as routers and switches, modems and smart phones, but now plans to challenge for large companies to sell equipment to Cisco.
Huawei was established in September last year, the corporate sector, and plans a $ 15 billion in 2015 global revenue-generating expected revenue this year will be more than 7 billion U.S. dollars. The corporate sector’s products include the internal data network hubs, routers, switches. Ross said: “really takes several years to reach critical mass, but it is not key to achieve revenue targets.”
Huawei corporate sector in 2011, operating income was 9.16 billion yuan (about 1.45 billion U.S. dollars), an increase of 57.1%. Although the revenue contribution of only 4.5%, but still within the company the fastest growing sectors.
As a technology industry veteran, Ross once worked at Nortel, Broadcom, Enterasys and Cabeletron and other enterprises. He said that Huawei did not announce any financial goal for the U.S. market, but already has become the elements of Cisco’s powerful opponents in the U.S. market.
Cisco is the world’s leading network equipment manufacturers.”Cisco has been a long time not come across a really strong competitor … now Huawei, we are not minor players.” Ross said.
Cisco CEO John Chambers (John Chanbers) has repeatedly Huawei called enterprise market is the most difficult competitors, and committed to active competition. Cisco in 2003, sued Huawei violated its part of the patent. Huawei subsequently canceled the controversial technology, Cisco is also the final withdrawal.
Cisco’s Rob Lloyd, executive vice president Rob Lloyd, Huawei is still imitation, not innovation, but also in terms of security is still in doubt. ”We are very clear, customers see from Cisco innovation, but did not see the same factors from Huawei. Can clearly say, imitation is not innovation.” He said on the last Tuesday of the earnings conference call.
He also said: Privacy and data protection are the concerns of customers in the era of cloud computing, which is not Huawei’s long-term. ”
Ross’s comments dismissive. He said: “If they put us as number one enemy and the greatest threat, we would be happy to accept such a compliment,” he added, Huawei is currently in the size of the United States is too small, not enough to challenge Cisco. But the company is indeed ready to go.
Huawei announced this week for the first time a distribution agreement with the U.S. IT distributor Synnex to expand in the U.S. corporate market share. The company also introduced the first product to compete with Cisco’s telepresence system and network switches.
However, because American politicians worried about security issues, Huawei to enter the market still faces obstacles. Ross said, Huawei is not currently operational cooperation with the U.S. federal government and financial services companies. Sell ​​their products to the federal government, we need to solve some things. “He said.
Ross said, adding that currently does not have the necessary channels to sell their products to the financial services sector.Mainly to the health care and education industry supply products such as telepresence equipment and database switch.
“We are gradually developing, now very patient.” He said. Ross is still grateful to Cisco to give them free advertising: “I joked, to inform people that Huawei is the nature of the business, Mr. Chambers is our greatest ally. He taught a lot of people ‘Huawei’ word pronunciation. ”
This infromation from cisco GLC-FE-100FX-RGD  transceiver onlinstore :www.fiberstore.com 

2012年5月24日星期四

Computer Systems and the Way They Function


Almost every device has some type of computer within it, but very few people understand the ins and outs of how it operates. Building a new area of knowledge starts by understanding how the personal computer operates internally, but most can go through their lives without the need to know. The basic design that computers are made from is actually rather simple compared to the pieces themselves, since there is just a simple flow of information.
The central processing unit, or CPU, is the main brain of the entire system that allows it to work. The CPU processes data and holds levels of memory much like the brain in a human being. Many processors today feature what are called multiple cores, which are actually just multiple processing units built into a single chip. Even though it is not really related, cache has multiple different layers and is somewhat related to the function of system RAM. To prevent from being forced to reprocess information repeatedly, the cache will hold frequently processed info to provide it much faster. The level 1 cache is the quickest but contains the least space, while the level 3 cache is the slowest but has the highest storage.
After the level 3 cache there is the system RAM, which is actually a separate component altogether. When a program loads, it is basically being transferred from the hard drive to the system’s RAM for faster reading. Even though loading to the RAM is where a lot of the wait time is spent when opening a program, without it, many different things would not be possible because things would be so slowly pulled from the hard drive. When the computer system is switched off all the information in the RAM is erased, and because of that a hard drive is needed to permanently store information.
The hard drive is simple: it is a device that permanently stores everything that is installed on one’s system. While the other bits of hardware are not necessary to make the system work, they generally provide a needed operation. In order to share files and gain access to the Internet, a network card should be used. While a lot of home systems have a simple Ethernet interface, data centers have particular interfaces such as a Cisco GLC-T and SFP transceiver modules to allow a system to do certain functions faster. The video card and sound card do exactly what they seem like they do: produce a picture to see and sound to hear. Motherboards are designed to connect everything together and process information between them with simpler integrated chipsets.

10g sfp+ module compatible cisco from Fiberstore


As we all know,SFP module is the upgrade of the GBIC module.SFP transceiver also know as min-GBIC.
Many people do not know the difference between  sfp module and sfp + module,so sometimes cause unnecessary trouble.10G module has gone 300Pin, XENPAK, X2, XFP development, and finally make 10g signal  transported by sfp size become a reality .10G SFP just is the SFP +.
As a high quality fiber optic patch cords supplier,Fiberstore supply a range of sfp transceiver module incuding single mode SFP, multimode SFP and copper SFP.They’re along with numerous operating wavelength as well as features.Our Cisco SFP+ equivalent products are produced and examined strictly based on industrial standards, they are compatible to the equipment from other companies including Cisco. Cisco SFP+ equivalent products along with DDM function will also be obtainable.
The multi-mode sfp+ transceiver compatible cisco is sfp-10g-sr ,which i s for duplex optical data communications such as 10GBASE-SR and 10GBASE-SW. It is with the SFP+ 20-pin connector to allow hot plug capability. Digital diagnostic functions are available via an I2C. This module is designed for multi-mode fiber and operates at a nominal wavelength of 850nm.
The single mode sfp+ transceiver compatible cisco including sfp-10-lrsfp-10g-lrm, sfp-10g-er,sfp-10g-zr. (For more information ,you can go to the products page by click the link)
This five products for sale on Fiberstore ,and the products mode are :SFP-10G-SR-FS;SFP-10G-LR-FS;FP-10G-LRM-FS;SFP-10G-ER-FS;SFP-10G-ZR-FS






Advantages of SFP + optical module
1 SFP + has a more compact form factor than X2 and XFP
2 can direct connection with the same type of the XFP, X2, XENPAK
3 Lower cost than XFP,X2,XENPAK
We provide the fiber optic transceiver modules with cheap price, perfect compatibility as well as fast shipping.

Classification of fiber patch cord


Fiber patch cord (also known as fiber optic connectors), that is,access to the optical module of fiber optic connectors, have a good variety, and may not be interoperable between. SFP modules, then the LC fiber optic connector, the GBIC connected SC fiber optic connectors. The following detailed description of several commonly used in network engineering fiber optic connectors:
① FC Fiber patch cord: External strengthen the use of metalfastening method for the turnbuckle. Generally used in the ODF sideup (patch panel)
② The SC Fiber patch cord: connector to connect the GBICoptical modules, and its shell is rectangular fastening method is the use of plug pin latch type, do not need to rotate. (Routers, switches,the most widely used)
③ ST Fiber patch cord: commonly used in fiber optic patch panel, shell round in shape, fastening methods for the turnbuckle. (For10Base-F connections, the connectors are usually ST typecommonly used in fiber optic patch panel)
④ The LC Fiber patch cord: connected to the SFP module connector, it uses that the easy to operate modular jack (RJ) latchmechanism is made. (Commonly used in routers)
⑤ The MT-RJ Fiber patch cord: send and receive one of thesquare fiber optic connectors, and one dual fiber transceiver
ST, SC connectors commonly used in general network.ST inserted after rotating a half weeks of a fixed bayonet, thedrawback is easily broken;
SC connector plug directly, very easy to use, the drawback is easy to fall out
; FC connectors general telecommunications network using a nut screwed onto the adapter.The advantage is solid, anti-dust, the drawback is that theinstallation a little longer.
MTRJ type fiber optic jumper by two high-precision plastic molded connectors and fiber optic cable. Outside of the connector is a precision plastic parts, including the tight organization of the push-pull plug card. For indoor applications inthe telecommunications and data network systems.
optical module: general are hot-swappable-GBIC fiber-optic inter face and more for SC or ST type; SFP transceiver: Small package-GBIC fiber optic LC type.

2012年5月23日星期三

SFP-10G-ER compatible cisco


SFP-10G-ER transceiver sfp+ package single-mode optical transceiver.
SFP-10G-ER optical transceiver basic description
Module Type: SFP+
Transmission distance: 40KM
Transmission media: single-mode fiber
A transmission wavelength: 1550nm
Interface Type: LC
Transfer rate: 10Gb / s
Operating voltage: 3.3 / 5 V
Product Model: SFP-10G-ER-FS
Product manufacturers: FiberStore
Cisco SFP-10G-ER optical module applications: Cisco switches with GBIC interfaces, routers, firewalls.
SFP-10G-ER optical transceiver product characteristics
10GBASE-ER SFP+ 1550nm 40km optical transceiver
High Quality with ISO9001, TUV, CE, FCC, UL and RoHS certificates
Condition: Factory New
Fully compatible with Cisco
Operating data rate up to 10.3Gbps
1550nm DFB Transmitter
Distance up to 40km over SMF
Single 3.3V Power supply and TTL Logic Interface
Duplex LC Connector Interface, Hot Pluggable
Operating Case Temperature Standard: 0C~+70C
Compliant with SFP+ MSA Specification SFF-8431
Compliant with IEEE 802.3ae 10GBASE-ER
Compliant with IEEE 802.3ae 10GBASE-EW
Compliant with SFF-8472
FiberStoe is the professional Cisco Compatible sfp+ optical transceiver manufacturers and distributors,Please sign in : www.fiberstore.com

SFP-10G-SR Compatible Cisco


SFP-10G-SR optical module sfp+ package multi-mode optical module.
SFP-10G-SR optical module basic description
Module Type: SFP+
Transmission distance: 300m
Transmission media: multi-mode fiber
A transmission wavelength: 850nm
Interface Type: lC
Transfer rate: 10Gb / s
Operating voltage: 3.3 V
Product Model: SFP-10G-SR-FS
Product manufacturers: FiberStore
Cisco SFP-10G-SR optical module applications: Cisco switches with GBIC interfaces, routers, firewalls,
SFP-10G-SR optical module product characteristics
Form Factor: SFP+
Device Type: Transceiver module
Interface (Bus) Type: Plug-in module
Connectivity Technology: Wired
Application: 10GBASE-SR
Data Transfer Rate: 10Gbps
Wavelength: 850nm
Max Distance: 300m
Fiber Type: MMF
Connector: Duplex LC
DDM: With DDM
Operating Temperature: Standard 0~70 °C
SFP-10G-SR optical moduleApplications
10GBASE-SR at 9.953Gbps
10GBASE-SW at 10.3125Gbps
1000 Base-SX Ethernet
8XFC at 8.5Gbps
4XFC at 4.25Gpbs
850nm VCSEL Transmitter
2XFC at 2.125Gpbs
1xFC at 1.0625Gbps
Duplex LC Connector Interface, Hot Pluggable
Other Optical Link
FiberStoe is the professional Compatible SFP+ optical modules manufacturers and distributors,Please sign in :www.fiberstore.com

2012年5月20日星期日

SFP-10G-LRM


SFP-10G-LRM  Details
Manufacturer: Fiberstore.
Range Modules
Part No. GLC-FE-100BX-U
10GBASE-LRM SFP+ Optical Transceivers
Key Features
10GBASE-LRM SFP+ 1310nm 220m optical transceiver
High Quality with ISO9001, TUV, CE, FCC, UL and RoHS certificates
Condition: Factory New
Fully compatible with Cisco
Operating data rate up to 10.3Gbps
1310nm FP-LD Transmitter
Distance up to 220m with MMF
Single 3.3V Power supply and TTL Logic Interface
Duplex LC Connector Interface, Hot Pluggable
Operating Case Temperature Standard: 0C~+70C
Compliant with MSA SFP+ Specification SFF-8431
Compliant with IEEE 802.3aq 10GBASE-LRM
The SFP-10G-LRM series single mode transceiver is small form factor pluggable module for serial optical data communications such as 1X2X4X8 Fiber Channel, IEEE 802.3aq 10GBASE-LRM. It is with the SFP+ 20-pin connector to allow hot plug capability. This module is designed for single mode fiber and operates at a nominal wavelength of 1310 nm.

sfp-10g-lr compatible cisco


sfp-10g-lr Details
Manufacturer Fiberstore
Range Modules
Part No. sfp-10g-lr
Technical Information
10GBASE-LR SFP+ 1310nm 10km optical transceiver
High Quality with ISO9001, TUV, CE, FCC, UL and RoHS certificates
Factory New
Fully compatible with Cisco
Operating data rate up to 10.3Gbps
1310nm DFB-LD Transmitter
Distance up to 10km
Single 3. 3V Power supply and TTL Logic Interface
Duplex LC Connector Interface
Hot Pluggable
Compliant with MSA SFP+ Specification SFF-8431
Compliant with 10GFC 1200-SM-LL-L FC standard
Compliant with 8.5G FC-PI-4 800-SM-LC-L FC standard
Compliant with 4.25G FC-PI-4 400-SM-LC-L FC standard
Compliant with 2.125G FC-PI-4 200-SM-LC-L FC standard
Compliant with 1.0625G FC-PI-4 100-SM-LC-L FC standard
Compliant with IEEE 802.3ae 10GBASE-LR/LW
Media & Performance
Connectivity Media Single-mode Fiber 100Base-BX10
Data Transfer Rate 100 Mbps Fast Ethernet
Physical Characteristics
Form Factor Hot-swappable
Dimensions 0.3″ Height x 0.5″ Width x 2.2″ Depth
Miscellaneous

GLC-FE-100BX-U


GLC-FE-100BX-U Details
Manufacturer Fiberstore
Range Modules
Part No. GLC-FE-100BX-U
Model Cisco 100Base-BX10 SFP Transceiver – 1 x 100Base-BX10 – SFP
Technical Information
Application/Usage  Data Networking
Interfaces/Ports   1 x 100Base-BX10
Interfaces/Ports Details 1 x LC 100Base-BX10
Media & Performance
Connectivity Media Single-mode Fiber 100Base-BX10
Data Transfer Rate 100 Mbps Fast Ethernet
Physical Characteristics
Form Factor Hot-swappable
Dimensions 0.3″ Height x 0.5″ Width x 2.2″ Depth
Miscellaneous
Additional Information
Distance: 10 km
Wavelength: 1310 nm
Specification
Technical Information
Application/Usage Data Networking
Interfaces/Ports
Interfaces/Ports 1 x 100Base-BX10
Interfaces/Ports Details 1 x LC 100Base-BX10
Physical Characteristics
Dimensions 0.3″ Height x 0.5″ Width x 2.2″ Depth

2012年5月16日星期三

Four steps to find the failure of the optical network


Look at Indicator of fiber-optic transceiver or optical module and the twisted pair port indicator is bright or not?
a ,such as the optical transceiver port (FX) indicator does not light, make sure that the fiber link is cross-linked? Fiber jumper is a parallel connection; the other end of the cross-connect.
b, A transceiver optical port (FX) light, B transceiver optical port (FX) indicator is not lit, the fault in the transceiver A-side: One possibility is that: the optical transmitter of the transceiver (TX)the mouth is bad, because the receiving optical signals B transceiver optical port (RX); Another possibility is: A transceiver (TX) port optical transmitter fiber link problems (cable or light jumper may off).
c,twisted pair (TP) indicator is not lit, make sure the twisted pair connection is wrong or connected wrong? Off tester checks; (However, some twisted pair transceiver indicator shall be fiber link connected after the bright)
d, the transceiver has two RJ45 ports: (To HUB) cable connected to the switch is a direct line; (To Node) connected to the switch of the cable is a crossover cable;
e, some hair side of the MPR switch: switch connection cable is a straight-line; DTE switch: switch connection cable is a cross-line.
(2) fiber optic cable, fiber patch cable is off?
a fiber optic cable through the off detection: laser flashlight, the sun, the luminous body facing the cable connector or a coupling according to the light; at the other end to see if there are visible?If visible light indicates that the fiber optic cable is not broken.
b, optical fiber connection off detection: laser flashlight, the sun, facing the fiber jumper, a phototherapy; see if there are visible at the other end? If visible light indicates that the fiber jumper is not broken.
Half / full duplex way is wrong?
Some transceiver side of the FDX switch: indicates full-duplex; HDX switch: that half-duplex.
With Optical Power Meter instrumentation
Under normal circumstances, the luminous power of fiber-optic transceiver or optical module: Multi-mode:-10db-18db between; 20 km single-mode:-8dB between-15db; 60 km single-mode:-5db-12db between; the luminous power of the fiber optic transceiver:-30db-5db between, you can determine this transceiver.

2012年5月15日星期二

Growth and use of 40G and 100G optical communication module


40G dense wavelength division general optical module market is so far the first limited to 1000 km above the core long-distance optical network. Because of its good optical signal-to-noise ratio and optical nonlinear characteristics, the differential phase shift keying (DPSK) modulation and coding format is more appropriate in this application and become the primary selection of suppliers. Several different differential phase shift keying module in order to meet the different needs of the core network has been put on the market, such as partial differential phase shift keying (P-DPSK) and free spectral range (FSR) to switch the differential phase shift keying modules (Switchable of FSR DPSK).
The primary purpose of the different modules of the transmission performance of its channel spacing of 50GHz and 100GHz with different types and number of reconfigurable optical add-drop multiplexer (ROADM) dense wavelength spectral transmission system optimization . Recently, there is a new type of continuous optimization of differential phase shift keying module (CO-DPSK) market quickly by the system integrator attaches great importance to. Compared to other differential phase shift keying module, it can provide real-time and continuous optimization of the transmission performance under a variety of optical network cascade filter conditions. So it can not only maintain excellent transmission performance, but also greatly simplifies the optical transmission system with a reconfigurable optical add-drop multiplexer network maintenance. Continuous optimization of the filter shape of the differential phase shift keying module to run in real-time optimization process does not need the equivalent of the optical network, the number of cascaded filters and the effective bandwidth of the optical transmission channel pre-understand.Moreover, it is also light on the transmission channel residual dispersion, group delay ripple and nonlinear effects of signal distortion, which sparked the operative part of compensation.
The following figure shows the CO-DPSK with a number of different other types of spectral range (FSR) DPSK module performance simulation and experimental results (Bw indicate optical channel filter based on second order Gaussian distribution pattern (SG2), the effective bandwidth ; the Exp indicate the experimental results for different FSR; the vertical axis to indicate the required optical signal-to-noise ratio) set the BER. The figure shows the effective bandwidth of a normal optical transmission channel fell from 25GHz to 65GHz within the scope of the overall CO-DPSK transmission performance than several other differential phase shift keying module has the superiority. Precisely because of this, continuous optimization module of differential phase shift keying (CO-DPSK) is considered to be a common module is especially suitable for long-distance and regional networks. Generally speaking, in these networks, the transmission quality of fiber is often good, is not simple fiber polarization mode dispersion (PMD) values ​​too much doubt.

Some of the considerations in the use of optical modules


1.10km single-mode optical module can support multi-mode fiber transmission, the transmission distance and the correspondingmulti-mode optical module is the same as in the multi-mode fiber,its transmission distance is not attenuated but the dispersion;
2.Transmission over 10km single-mode optical module in the multi-mode fiber need to pay attention to the receiving end of theoptical power can not exceed the saturation power value,otherwise it may damage the receiving device; also need to payattention to this problem on a single-mode fiber; can receivingside of the optical power before connecting test to determinewhether you can connect, if the optical power is too strong, may consider using the appropriate attenuator to increase theadditional attenuation to meet the connectivity requirements;
3. multi-mode optical module can not be transmitted on asingle-mode fiber, the major impact of the transmission distancebecause of multimode fiber attenuation is too large;
4. ceramic parts inside the optical module, pick up the optical module to be careful, if accidentally fall or hard bump, the lightmodule does not recommend re-shelves to avoid subsequentfailure;
5.To insert a fiber-optic lines in the optical module requirements movements gently insert the port facing the light, too much forceor diagonally inserted, may damage the optical module;
6. The optical port of the optical module can not be long-termexposed for long periods of time, you need to assemble on thedust cover to protect;
7.Most of the optical module index support hot-swappable, but is not recommended recurrent hot-swappable, easy to cause electrical damage;
8.Confirm swappable optical module action norms: Goldfingerpart of a light extraction module, do not touch the optical module,in order to avoid damage to optical module; b, the optical moduleis inserted to confirm the optical module handle is attached to thelight optical port on the module and then insert, just remove thelight module, do not unplug the optical port dust plugs directly into the. pull out the optical module, the first fiber optic cable pulled out, the handle pulled and light a population of about 90 degreesand slowly pull out, pull out can not be too hard or handle not in place on the pull out, there may be optical modules shielddamage.

2012年5月10日星期四

Cisco GLC-T

Cisco GLC-T optical module SFP package electrical port optical modules. 
Cisco GLC-T optical module basic description
Module Type: SFP
Transmission distance: 100M
Transmission media: twisted pair
Interface type: RJ45
Transfer rate: 1.25Gb / s
Operating voltage: 3.3 / 5 V

Product Model: GLC-T

Product manufacturers: Fiberstore

Cisco GLC-T optical module product characteristics

◆ fully comply with the SFP and SFF-8472 standard module;
◆ Comply FE/GBE/2GBE/FC/2FC/4FC/SDH/SONET;
◆ Comply with Telcordia (Bellcore) GR-468-CORE reliability requirements;
◆ Comply with industry standard RFT Electrical Connectorand Cage
◆ the Class1 specification products, in line with IEC60825-1 and IEC 60825-2 requirements;
◆ a single +3.3 V power supply and TTL logic interface;
◆ EEPROM and serial ID card;
◆ Working temperature: 0 ~ +70 ° C (commercial grade), -40 to+85 ° C (industrial grade);
◆ Low EMI (electromagnetic interference);
◆ hot-swappable, dual-LC connector
◆ 850nm VCSELs / FP / DFB, SM / MM;
◆ RoHS-compliant products;

Cisco GLC-T optical modules range of applications: Cisco switches with SFP interfaces, routers, firewalls, …

FiberStoe is the professional Cisco Compatible GLC-T optical modules manufacturers and distributors,Please sign in : www.fiberstore.com