Optical module solution to the H3C S5500-28C-SI switch
Posted on Jul 12, 2017 by cozlink.com
H3C S5500-28C-SI is a Gigabit Ethernet switch developed by H3C. It has special cluster management functions, multi-service support functions and security functions for large enterprise networks. And the access or aggregation of the campus network and the connection of the data center server farm.1. The introduction to H3C S5500-28C-SI switchThe H3C S5500-28C-SI switch has 24 10/100 / 1000Base-T Ethernet ports and four multiplexed 1000Base-X Gigabit Ethernet SFP ports, plus two expansion slots, each Slot can support single-port or dual-port 10GE expansion module, in the Gigabit convergence or access to support 10GE to further expand the capacity, you can also support dual-port SFP expansion module can reach 28 or 52 available gigabit port.2. The applications of H3C S5500-28C-SI switch1), Applications in the large-scale campus networkThe H3C S5500-28C-SI switch can be used as a convergence layer switch in large and medium-sized enterprise or campus network applications. The uplink rate c..
The application guideline of optical modules and fiber connectors
Posted on Mar 30, 2017 by cozlink.com
For having a better understanding of optical modules and fiber connectors, this tutorial will introduce the application guideline of them, and we hope that this article will be helpful for you.Classification of moduleClassified by rate: 100BASE, 1000BASE, 10GE of Ethernet application; 155M, 622M, 2.5G, 10G of SDH application.Classified by form factor: 1 x 9, SFF, SFP, GBIC, XENPAK, XFP1 x 9: Welding type optical module, generally the speed is not higher than Gigabit, mainly uses SC interface.SFF: Welding type small form factor optical module, generally the speed is not higher than Gigabit, mainly uses LC interface.GBIC: Hot-pluggable Gigabit interface optical module, adopts SC interface.SFP: Hot-pluggable small form factor optical module, the highest rate can reach 4G, mainly uses LC interface.XENPAK: Can be used in the 10G Ethernet, mainly uses SC interface.XFP: 10G optical module, can be used in the 10G Ethernet, mainly uses LC interface.Classified by Laser type: LED, VCSEL, FPLD, DF..
How to distinguish the single-mode and multimode optical modules?
Posted on Jul 12, 2017 by cozlink.com
We know that optical modules can be divided into single-mode optical modules and multimode optical modules are usually marked on the module. Single mode to SM, for long-distance transmission, fiber color is yellow; multi-mode is MM, usually used for short-distance transmission, fiber color is orange. In addition to these, how can we distinguish between single-mode and multimode?1. The wavelengths are different The general multi-mode light wavelength of 850nm, the single-mode optical wavelength is mainly 1310nm and 1550nm-based. Multi-mode optical module due to inter-mode dispersion is more serious, can only be used for short-range transmission (SR); and the single-mode optical module for LR, ER, ZR and other long-distance transmissions. Under normal circumstances, the transmission distance of 2km or less, known as the multi-mode module; transmission distance of 2km or more, known as the single-mode module.2. The scopes of application are differentMulti-mode optical modules are use..
According to the physical standard, Cisco SFP optical module can be divided into 1000BASE-T, 1000BASE-SX, 1000BASE-LX / LH, 1000BASE-EX, 1000BASE-ZX, 1000BASE-BX10-D / U optical module. The Cisco GLC-LH-SM optical module is a 1000BASE-LX / LH optical module, which will be covered in detail in this article.Cisco GLC-LH-SM SFP optical module overviewThe Cisco GLC-LH-SM SFP optical module is a very popular hot-swappable module that utilizes a duplex LC interface that is the smallest Gigabit Ethernet optical module for high-density fiber optic applications. This optical module conforms to the SFP MSA protocol and can be used in both single-mode fiber applications and multimode fiber applications. The Cisco GLC-LH-SM SFP optical module is composed of 1310nm FP laser emitters, PIN photodetectors, transimpedance amplifiers (TIA), microcontrollers (MCUs) and other components, in line with IEEE 802.3z 1000BASE-LX standard, the farthest supporting distance up to10 km transmission. In order ..