The company does not have a network engineer, so it assumes the role of a network engineer when working on a project. The following terms are often used during the project process. The following is my summary of the project, correct the information if it is incorrect!
Term 1: 1000Base -*
Gibit Ethernet (GbE, Gigabit Ethernet, or 1 GigE) is a term used to describe various Ethernet frame transmission technologies at gibit rates per second,
Defin
, the bandwidth of the backboard is linear.
◆ Second-layer packet forwarding speed
Layer 2 packet forwarding rate = number of Gigabit ports x 1. 488 Mpps + 0.1488 MB port count * Mpps + number of other types of ports * Calculation Method. If this rate can be less than or equal to the forwarding rate of a nominal L2 packet, then, the bandwidth of the vswitch backboard can achieve the line speed during Layer 2 switching.
◆ Layer 3 packet forwarding spee
Ethernet switches are still commonly used, so I studied the high availability of stack 10/100 Ethernet switches. I would like to share with you here, hoping to be useful to you. Catalyst3524-PWRXL Ethernet switches are part of the CiscoSystemsCatalyst3500XL series, which is a series of scalable stack 10/100 and Gigabit Ethernet switches that provide optimal performance, manageability and flexibility, as well as unparalleled investment protection.
Adva
packet forwarding rate is 148810pps. In addition to 24 10/100 Mbps adaptive ports, the vswitch can connect 1 to 2 10-Gigabit Single-Mode Optical Fiber and multimode optical fiber through one expansion slot.The vswitch supports WEB browser management. The administrator can configure, modify, and view the vswitch on the management computer. RG-S1926S can also be managed through the Chinese network management software RGM, RGM can automatically draw a n
Now, Gigabit Networks are becoming more popular, but the practice of Gigabit Networks is not widely understood by many friends. Hope to help you.
The gigabit 5 category or over 5 category twisted pair wires are in the same form as the 10-Gigabit network cable. They are also divided into two types: pass-through and cro
After a few days of testing, the final test results came out on January 6, 2015, this time the test results are satisfactory, the same task when the 32 cores to call the time spent is 61,899 seconds, and when the call 64 cores to calculate the same task takes 32,659 seconds, There is a significant advantage over gigabit networks compared to using gigabit networks.Two compute nodes, a compute node is 32 core
A small tutorial on Embedded Assembly syntax format used by Gcc-Linux general technology-Linux programming and kernel information. The following is a detailed description. Small tutorial on Embedded Assembly syntax format used by Gcc
This article describes the Embedded Assembly syntax in detail from the basic syntax, the format of embedded assembly, and the extended Embedded Assembly format. It should be noted that gcc uses att's Assembly format.
Basic syntax
There are several differences in sy
div
Elemen~ telement
DIV~SPAN
A sibling element selector that matches the sibling span elements behind all the div, and can be separated by other elements
[Attribute]
[ATT]
All elements containing the ATT attribute
[Attribute=vlaue]
DIV [att= ' Val ']
Match all the
the number of nouns of locality is 2, then it can be determined that there are at least two triples, according to the sub-nodes of the nouns of locality of the ATT (fixed-medium relationship), the landmarks are "room" and "bridge" respectively. Then based on the locality to find the three groups of projectiles (the specific method below), because there is a three-group of the shoot for "Xiao Ming" and "Obama", so to "Xiao Ming" The landmark and the l
element
. Info class
Selector that matches all elements of the class attribute that contain info
#footer ID
Selector that matches all elements of the id attribute equal to footer
E[att= ' Val ']
The value of the attribute att is the e element of Val (case-sensitive)
E[att^= ' Val ']
The
" +
"Attributes, please .");
}
}
Enumeration Enum = data. enumerateinstances ();
While (enum. hasmoreelements ()){
If (Instance) enum. nextelement (). hasmissingvalue ()){
Throw new nosupportformissingvaluesexception ("ID3: no missing values ,"
+ "Please .");
}
}
Data = new instances (data );
Data. deletewithmissingclass ();
Maketree (data );
}
/**
* Method for building an ID3 tree.
*
* @ Param data the training data
* @ Exception if demo-tree can't be built successfully
*/
Private void maketree
MyType;
Initializes a new instance of the Public AssemblyInfo ()
{
Shellform here denotes the actual form.
MyType = typeof (Shellform);
}
Gets the name of the assembly.
Public String AssemblyName
{
Get
{
Return MyType.Assembly.GetName (). Name.tostring ();
}
}
Gets the full name of the assembly.
Public String AssemblyFullName
{
Get
{
Return MyType.Assembly.GetName (). Fullname.tostring ();
}
}
Gets the code base.
Public String CodeBase
{
Get
{
return myType.Assembly.CodeBase;
}
}
Gets the copyr
frustrating problem is that your vro is still stuck when the bandwidth goes up?
When the bandwidth is increased, but the processing speed of the router is still stopped, it will become one of the main bottlenecks of the enterprise network and directly affect the operating quality of the enterprise network. With the development of technology, Gigabit Routers have emerged. Not only does LANToLAN achieve Gigabit
, power Center and raw material storehouse, auxiliary materials storehouse, sewage station, rubbish station and other areas link up (different enterprise name is slightly different, this name is for reference only), finally formed the Tobacco Enterprise Complete network system, 1.650) this.width=650; "style=" width:692px;height:436px; "title=" Untitled -8.jpg "src=" http://s3.51cto.com/wyfs02/M01/72/ 2a/wkiol1xeeshizysqaa-jbqq0cqe847.jpg "width=" "height=" "alt=" Wkiol1xeeshizysqaa-jbqq0cqe847.j
transcoding.
This method of Transcoding Using computer devices has great flexibility and can process video data that exists in the form of files or streams. In essence, it is stored on computer devices.The server opens a cache area with enough big data to divide the video data files or streams to be processed into many suitable fragments and put them in it. The software provides transcoding algorithms and controls computer systems for transcoding. Figure-The concept of the data interface shown
Typically, the PDS system is updated every seven years, from three classes to five types of systems in five years, five types of systems to replace five systems, only three years, and now, six types of systems have been mature and increasingly widely used in the six-class systems to achieve Gigabit Ethernet is the trend, And the standard of seven types of systems are being formulated and preliminary implementation, the copper cabling system to the ext
annoying marks such as loading, network exception, and network timeout on the webpage, i'm afraid I can only bury myself in the sky. However, the depressing speed of the turtle's network is getting faster. With the active promotion of the three major operators, fiber optics will be fully popularized and bandwidth will be improved, which will undoubtedly bring a spring breeze to users, but another frustrating problem is that your vro is still stuck when the bandwidth goes up?
When the bandwidth
With the development of the routing technology, the application of the soft routing technology is also more mature and stable. Many people use the soft routing technology, but it also brings problems such as disconnection, connection failure, and slow speed. This time I want to talk about the hardware used for soft routing. I hope it will help my friends who have encountered the above problems.
Soft routing is not only designed to save costs, but also to achieve the perfect functionality and mor
Ethernet (EtherNet)Originally created by Xerox, the Ethernet was developed jointly by DEC, Intel and Xerox three companies in 1980 as a standard. Ethernet is the most widely used local area network, including standard Ethernet (10Mbps), Fast Ethernet (100Mbps), Gigabit Ethernet (Mbps), and 10G Ethernet, all conforming to the IEEE802.3 Series standard specification.(1) Standard EthernetThe first Ethernet only has a 10Mbps throughput, and it uses the ac
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