博文

目前显示的是 四月, 2017的博文

Introduction to CFP-40G-LR4 and CFP-100G-LR4

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The C form-factor pluggable (CFP) is specified by a multi-source agreement (MSA) among many manufacturers for the transmission of high-speed digital signals. The CFP transceiver can both support 100 Gbit/s or OTU4, and 40Gbit/s OTU3 signals. The 40G and 100G CFP transceivers are hot-swappable input/output devices that can be plugged into the 40-Gigabit and 100-Gigabit Ethernet module ports. CFP-40G-LR4 has the same footprint as CFP-100G-LR4, and both of them terminate with duplex SC fiber connectors. Except that they support different transmission distance, what are the detailed information about them? 40G CFP-40G-LR4 The CFP form factor can also operate over 40GbE, supporting both single-mode and multimode fiber and a variety of data rates, protocols, and link lengths, including all the physical media-dependent (PMD) interfaces contained in the IEEE 802.3ba Task Force. 40GBASE CFP optical transceiver module supports 40GBASE Ethernet and OTU3 standards, which can be used in core and d…

CPAK Vs. CFP/CFP2/CFP4 Vs. QSFP28 100G Transceiver Modules

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100G QSFP28 and CFP optical transceivers as the main transmission media of 100G network, dominate 100G hardware market. CPAK, launched right after CFP2 100G modules, is the Cisco proprietary form factor. Since its certification, CPAk was considered as the alternative of CFP form factor modules. Today's article will describe CPAK 100G module in detail and compare it with other 100G modules such as CFP, CFP2, CFP4 and QSFP28 modules. What is CPAK Optical Transceiver Module? Designed as a smaller, low-cost alternative to CFP transceiver, CPAK 100GBASE optical module is not popular on the 100G market nowadays. CPAK module is also the first 100G optical transceiver that uses CMOS Photonics technology. This type of 100GBASE module can work in the following Cisco networking equipment—ASR 9000 Series Router; CRS-X Carrier Routing System; NCS 2000, 4000, and 6000 Series Routers; the Nexus 7000 and 7700 Series Switches, and the Cisco ONS Transport Platform. CPAK optical transceiver incorpor…

Describing Cisco GLC 1000BASE SFP Transceiver Modules

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Cisco SFP module, compatible with 1000BASE Gigabit Ethernet standard is a hot-swappable input/output device that can plug into a Gigabit Ethernet slot of Cisco switches and routers. Cisco, as a telecom giant supplies a whole series of fiber optic transceiver modules available in 1000BASE-T, 10/100/1000BASE-T, 1000BASE-SX, 1000BASE-LX, 1000BASE-EX, 1000BASE-ZX standards. It is truly dizzying to choose from a whole array of Cisco SFP transceivers, and each often has only minor differences between them. Thus, to help customers choose the suitable Cisco SFP modules, this article will clearly introduce several Cisco GLC modules. Figure 1 shows Cisco SFP plugging into the Cisco Nexus 9396 switches. GLC-T GLC-T is 1000BASE-T Cisco SFP copper 1g module, compliant to IEEE 802.3, operates over Cat5 copper wire for a distance of 100m. Cisco GLC-T fiber transceivers provide 1Gbps data transfer for full duplex Gigabit Ethernet connectivity. GLC-TE Similar with GLC-T SFP modules, GLC-TE provides a l…