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目前显示的是 八月, 2016的博文

Cabling Guide for Cisco Nexus 9508 Switch

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Due to the the ever-expanding data center consolidation, virtualization and cloud technologies, network installers feel the urge to maintain a competitive advantage of their infrastructure. Except for the performance, bandwidth and latency in datacenter cabling, management and operational agility and simplicity have also elevated themselves to the top mind of data center architects and operator. Cisco Nexus 900 series represents a familiar starting point on the journey toward a new era in software-defined network, which is announced to be the most port dense and power efficient plus fastest packet forwarder and programmable data center modular switch in the industry. This article introduces basic information of Cisco Nexus 9000 series and the cabling solutions for Nexus 9508 switch. Cisco Nexus 9000 Series Switch According to Cisco’s announcement, the Nexus 9000 Series switch is the foundation of the Cisco next generation data center solution. The Cisco Nexus 9000 Series switch contai…

Telecom Hardware: NIC, Transceiver, Modem and Media Converter

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People usually have the misconception about the devices like the network interface card, transceiver, modem and media converter in telecommunications fields. Some even don’t know how to use them correctly. In fact, these devices are all possessed with different functions. For example, a network interface card connects your computer to a local data network or the internet. A transceiver is responsible for taking the digital data represented by a series of zeros and ones. Modems takes the digital zeros and ones and converts it to an analog sound. While a media converter, as the name implies, is typically used to convert one media type to the other. To have a further understanding of their performances, you can have a look at the following article. Network Interface Card Just as said before, a network interface card (NIC) is used to connect your computer to a local data network. It functions as a middleman between your computer and the data network by translating the computer data into e…

Is It Worthwhile to Use Cat 7 Ethernet Cable?

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Ethernet cables provide stable internet connection between electrical devices, which are standardized cables to facilitate easy communication between disparate electronic equipment. These electronic devices can either be fax machines, printers, scanners, or personal computers. Ethernet cables can be categorized into several types based on different specifications. Category 7 Ethernet cable, also refers to Cat 7, which is the wire used for cabling infrastructure of Gigabit Ethernet. it is known that Cat7 is the more expensive option compared to Cat 5e and Cat 6 cables. Users might be wondering whether it is worth the extra money to consider Cat 7 cables. The answer to this solution will be clearly introduced in this passage. Quick Review of Cat 7 Cables The Cat 7 cable refers to the transmission cord standard cable used in the 10G Ethernet and other Cat 5/Cat 6 downhill compatible networks. The Cat 7 cable is an 8-core safeguarded cable that each pair of cable has a shield. The program…

Seven Tips for the Cable Installation

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Cable installation can be a finicky thing. People without appropriate knowledge and training can not be capable of running cables, otherwise they will end up with network failure. End users might have the experience of running telephone cables, so that they want to take the risk of wiring network cables. In fact, telephone cables can tolerate quite a lot of errors, but that is not the case of the data cabling as it is quite sensitive to cable errors. Therefore, to avoid potential network error and reduce your risks of costly mistakes, here are several things you should know before the cable installation. Using Cable Management The first thing you should bear in your mind is that the cabling work won’t stop with the initial installation. More cables and optical devices will be added. Thus to make sure that you label appropriate cables, color-code cables, or implement some other kind of process to make it easier to identify cables later on. What’s more, adding ladder rack, rack-based ca…

Using A GLC-SX-MM Transceiver To Connect Gigabit Ethernet Network

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If you are still using a 100BASE network, or GBIC transceiver for a small office, you may run into the limitations of last decade's technology. Because the 100BASE standard network is just fine for a small office, but it isn't sufficient to handle heavier network use. As your network expands, you might experience problems like: dropouts in your VoIP calls, Sluggish data retrieval speeds, or poor video streaming quality. If you have encountered any of this, maybe it’s time to start thinking about an upgrade to gigabit Ethernet, which moves at ten times the speed of traditional Ethernet. This article will explain the Gigabit Ethernet in the following aspects: the compatible SFP transceiver, the difference between twisted copper and fiber optic Ethernet. Compatible SFP Transceiver When contemplating an upgrade to gigabit Ethernet, there are a number of issues involved in the network transition. But one of the most immediate concerns people have is how much new hardware they'l…

Cabling Solutions for Cisco Nexus 6004 Switch

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Cisco system introduced the Nexus series switch in 2008 that are modular and fixed port network switched designed for the data center. The Cisco Nexus series switches ranges from Nexus 1000v, to the newly released Nexus 9516, which are warmly welcomed by users. This article will introduce the Cisco 6004 switch and highlight its 10G and 40G cabling options. Cisco Nexus 6004 Switch Cisco Nexus 6004 switch is a model of Nexus 6000 series. Previously,, the Nexus 6000 series was meant to be focused on the Cisco 40G aggregation products, and the 5500 and 5600 series on 10G. However, Cisco decided to merge the product portfolios. Thus Nexus 6000 series switch delivers high-density 10 and 40 Gigabit Ethernet connectivity in an energy-efficient, compact form factor, so does the Nexus 6004 switch. The Cisco Nexus 6004 switch is a high-density, low-latency, high-performance device for 10G & 40G Ethernet and Fibre Channel over Ethernet (FCoE) infrastructure, with a compact four-rack-unit (4RU…

How to Prevent the Damages of a Fiber Optic Network

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The fiber optic cable, made up of by a hair-thin glass is typically very fragile. Although the cables have been designed to protect the fiber with a jacket solution, it can be more easily damaged than a copper cable. To ensure long-tern services to your customers, and get a good return on your investment, learning how to protect your fiber network is vital. There are many factors that may have an impact on your network. So how can you minimize the risk and prevent from the failures? This article has listed enemies of your fiber network as well as some solutions to you. Squirrel Damage Of all the animals in the world, almost all of our animal damage comes from little nut eater, but there is usually nothing we can do about it. Rodents, birds, monkeys and insects are all the reasons that may caused major issues with connections. There are more examples of animal attacks, making them public enemy number one for network operators. Once the damage occurs, it will impact service level, requi…

Dark Fiber – Is It the Dark Side or the Right Side?

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As the optical technology grows more sophisticated and expand into high bandwidth optical backbone connectivity, enterprises are now turning to the private and secure dark fiber network. By leasing dark fibers, network operators can cut down the labor cost of developing fiber networks. What’s more, enterprises can use their own optical technician and networking equipment to connect multiple locations to create a private network or to connect to other network hubs to gain access to various high speed internet. So what exactly is dark fiber? Is it the dark side or the right side of a fiber optic network? Here are a few things you should keep in mind. What Is Dark Fiber? Dark fiber refers to the optical fiber that has not been used but available in fiber optic communications. The dark cable is composed of hundreds and thousands of fiber jumper cables carrying high amounts of data at high speeds over hundreds of miles. Network operators originally used the term—dark fiber to describe the …

Guide to BiDi Optical Transceiver

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Pluggable optical transceivers typically use two fibers to send and receive optical signals between switches, firewalls, servers or routers. One fiber is to receiving data from networking equipment, and the other is to transmit data to the networking equipment. However, a new class of optical transceiver—BiDi transceiver uses only a single fiber to send and receive signals. The reduction in fibers leads to substantial cost-saving especially in high-density applications. Besides that, BiDi transceivers also possess some unique features, which will be illustrated in the following article. BiDi Transceiver Overview BiDi is short for Bidirectional. BiDi transceivers use two different wavelengths to achieve transmission in both directions on just one fiber. General optical module has two ports, TX for the launch port, the RX receive port, as seen in the following picture, while BIDI optical module is only one port filtered by the filter in the optical module, which completes the 1310nm opt…