I'm going to go down to the two and three layers of the switch.
A two-tier switch is equivalent to dividing an interface into multiple interfaces, just to provide a lot of interfaces; (if the landlord is not a professional person can ignore the following content) theoretically it can be understood that the
1) layer-2 Exchange Technology
The layer-2 switching technology is relatively mature. The layer-2 switch is a data link layer device that can identify MAC locations in data packets.Address information, which is forwarded based on the MAC address, and the corresponding MAC addresses and ports are recorded in a local loc
Simply put: Layer-1 switchOnly physical layer protocols are supported (one phone-controlled switch can be called ???)L2 SwitchSupports physical layer and data link layer protocols, such as Ethernet switches.L3 SwitchSupports physical layer, data link layer, and network layer protocols, such as some switches with routing functions. In terms of the ISO/OSI hierarchy, switches can be divided into L2 switches and L3 switches. A layer-2
; > >utf8> MangodbMangodb is a key-value database. It usually used in the site has a lot document but has few relations.Usage:
Download "Content_providers.zip".
Extract the zip file. Copy the files under "MySQL" include "Mongodb.config" into BIN folder of Kooboo CMS.
Install the MONGODB server.
Edit the "Mongodb.config" to specify the connection strings.
xmlns="Http://schemas.datacontract.org/2004/07/Kooboo.CMS.
In daily life, the Internet access will certainly involve wireless switches, which provide users with exclusive point-to-point connections. data packets are only sent to the destination, so as to avoid a significant reduction in the bandwidth of all ports when the data volume is large, therefore, selecting a high-performance wireless switch saves a lot of trouble for future work.
When used for a star struct
With the popularization of the Internet, the development of information technology, data center construction needs and standards are also constantly developing, so the data Center for network equipment requirements are gradually upgraded, ordinary switches are often unable to meet the needs of the data center.
Compared with common switches, data center switches need to have the features of high capacity, large cache, virtualization, FCOE, two-layer trill technology.
1. High-capacity equipment
These days, when HP acquired H3C, it was rare to see 3COM with 3 O-markers. But the problem, a year ago a project bought a 3COM switch 2924-SFP plus switch (PS: pure switch, no readable data). At that time saw a default management IP in the back, so log in to the Web interface configuration can be. Later the project bought H3C S5500
In Java, switch usage format:
switch (expression)
{case
constant expression 1: statement 1; break;
....
Case constant Expression 2: statement 2; break;
Default: statement;
after each case followed by a break, as long as the match to execute the corresponding statement, it will jump out of the switch and then execute the following statement, this
The switch effect of one tab implemented by jQuery is also embedded with the switch, jquerytab
General results
The following code imports the jQuery package.
Style:
Js Code:
Html structure:
How can I change jquery to achieve card tab switching?
The key is where is the co
A Download the application
S-Change assistant has two versions: PC version and device version, PC version is divided into Windows version and Mac OS version.
Windows version download link: http://www.samsung.com/global/download/smartswitchwin/
MAC OS version download link: http://www.samsung.com/global/download/smartswitchmac/
Equipment version, need to be on the phone, into the Samsung App Store to downlo
Solution One
1. Open 360 security guards in the computer, then find the "Computer Aid" button in the interface to enter
2. Then in the Aid dialog box we enter "computer switch machine does not sound" then click on the search, then there will be a repair function below, such as we click on "Fix Now" after a while to repair the good we restart the computer is there a sound?
Solution Two if not resolv
The weui-switch control, how to set the value after the form is submitted, after the weui-switch is submitted
I recently studied the weui framework and made some small experiments. I found that the weui-switch control could not directly submit and could not obtain the form i
What is a fool switch? It is easy to understand the introduction is not to take care of its switch, connected to the network equipment can be used.
With the development of modern society, the modern "lazy person" also more and more, those who light, convenient, easy and lab
How do I write a program automatically judge, other people's server is slow, they have two interface address, located in two different servers, then, how can I use the program to automatically determine a server is slow, automatically switch to the next server to request a link??? I use PHP to write programs
Reply content:
How do I write a program automatica
The "advanced" usage of the PHP switch judgment statement is detailed in the switch
Only so called "advanced" usage, because I even switch the most basic usage has not mastered, so, the next is actually the basic usage of it!
A switch
Often see network friends in the difference between the switch and router, in fact, if you have used both switch and router friends should know, for everyone, switch and router use the biggest difference is that the router can realize dial-up internet access, and then shared to multiple computers at the same time the I
such as the Cisco 2960x-24ps-l (24,000 Gigabit Port 4,000 gigabit), forwarding bandwidth 108Gbps, switching bandwidth 216Gbps, packet forwarding rate 71.4Mpps, according to the non-clogging line speed forwarding to calculate, exchange capacity of 2*28*1gbps=56gbps, The nominal 216Gbps is much higher than this, why? Is it due to the different design of the switch
In practice, the string series in c ++ -- use string in the switch statement (c ++ does C #, and break in the switch is still very powerful)
How many times have you written this as a C ++ programmer out of habit or helplessness:
if (!strcmp(pszValue, "Value X")) DoThis();else if (!strcmp(pszValue, "Value Y")) DoThat();else if (!strcmp(pszValue, "Value Z"))
Regarding the solution that the Wireless hardware switch cannot be enabled when Lenovo ultraboo is mounted to the Ubuntu system, the ubuntu Switch
I. Problem Description
I am using Lenovo's ultraboo yoga2 pro. By default, it is mounted to the Win8 system. However, when the ubuntu dual system
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