Over the past few years, there appeared a boom in the adoption of 10/100M Ethernet or Fast Ethernet due to the low cost and compatibility with existing local area networks (LANs). Driven by growing high-quality networking applications and increasing bandwidth-hunger delivery demands, this Ethernet LAN evolved even rapidly and then Gigabit Ethernet (1000M Ethernet) appeared. Actually, Gigabit Ethernet has proved itself as a suitable choice to increase bandwidth requirements for growing networks in high speed data communication.

Just as what has been expressed in the paragraph above, Gigabit Ethernet (GbE or 1 GigE) is the evolutionary fruit of Ethernet standard. In computer networking, GbE is a term describing various technologies for transmitting Ethernet frames at a rate of a gigabit per second (1,000,000,000 bits per second), as defined by the IEEE 802.3-2008 standard. It came into use in 1999, gradually supplanting Fast Ethernet in wired local networks, since in such areas GbE performed considerably faster.

Gigabit Ethernet standards define a Gigabit Media Independent Interface (called the GMII) to the Ethernet Media Access Control (MAC) layer, management, repeater operations, topology rules, and four physical layer signaling systems: 1000BASE-SX (short wavelength fiber), 1000BASE-LX (long wavelength fiber), 1000BASE-CX (short run copper) and 1000BASE-T (100-meter, four-pair Category 5 UTP). Namely, Gigabit Ethernet can run over three media: fiber optic patch cable (single-mode fiber or SMF, multi-mode fiber or MMF), shielded balanced copper cable and Category 5 UTP. The figure below shows the relationship of the various members of the Gigabit Ethernet technology family.

1000BASE-LX is specified to work over a distance of up to 5km over 10µm SMF. It can also run over all common types of MMF with a maximum segment length of 550m.

1000BASE-SX uses shortwave laser for operation over MMF. The maximum length of segment supported by 1000Base-SX is 550 meters. Like GLC-SX-MM-RGD module, Fiberstore compatible Cisco GLC-SX-MM-RGD is designed for 550m transmission with a data-rate of 1.25Gbps/1.063Gbps.

1000Base-CX is an initial standard for Gigabit Ethernet connections with maximum distance of 25 meters using balanced shielded twisted pair. In practice, 1000BASE-T has succeeded it for general copper wiring use.

1000 Base-T transmits signal over four pairs of CAT5 untwisted pair cables (UTP). Each 1000BASE-T network segment can be a maximum length of 100 meters. It can provide speed of 1000 Mb/s-10 times the speed of Fast Ethernet- over CAT5 UTP.

As a professional fiber optical product manufacturer and supplier, Fiberstore supplies a broad selection of these cables for Gigabit Ethernet solution, such as SMF, MMF, and copper. These cables are all quality assured and cost-effective. Besides, active and passive copper cables are also available in Fiberstore. Like the Cisco QSFP-H40G-ACU10M product, this QSFP-H40G-ACU10M listed on Fiberstore runs over active copper cable for 40G links.

With the help of these cables, you can enjoy the flexibility of cabling assemblies, as well as the network bandwidth without limit to the data transfer speed. Fiberstore cables give you fast network speed while helping you save your money. You can visit Fiberstore for more information about Gigabit Ethernet cabling solutions.

Posted by: fernxu123 at 03:10 AM | No Comments | Add Comment
Post contains 542 words, total size 5 kb.