Two-layer switch:
Two-layer switching technology is a mature development, two-layer switch is a data link layer device, can identify the MAC address information in the packet, according to the MAC address forwarding, and the MAC address and the corresponding port record in their own internal address table.
Specifically as follows:
(1) When the switch receives a
Two-tier switch:The second layer switching technology is more mature, two layer switch is a data link layer device, can identify the MAC address information in the packet, according to the MAC address to forward, and these MAC addresses and corresponding ports recorded in their own internal table of addresses. Specific as follows:(1) When the switch receives a packet from a port, it reads the source MAC add
itself I do this UI is designed to support the mobile end of the page, and the WebKit is also exactly the support of the single tag
input element is the use of pseudo class (
:before or
:after ), so I did not do more support and optimization, I just want to keep the HTML as clean as possible, so no other elements to do simulation. If you want to use on the desktop application, or support other browsers, you can make a little change, anyway, I have not tested.
Today continue t
This article introduces the knowledge of switch stack and the principle of switch stack. There are many problems with switch stack on the network. For vswitches of various models, a q A topic about switch stack is provided below. I hope to give all questions about switch st
IntroductionTraditional routers have isolated networks, isolated broadcasts, routing and forwarding, and firewall operations in the network, and as the network continues to evolve, the load of routers is growing rapidly. One of the important reasons is that the VLAN (virtual local area network) technology is widely used in networks because of security and management convenience. VLAN technology can logically isolate different network segments, ports, or even hosts, and the communication between
Many vswitch users have encountered many problems due to many reasons. Here we mainly analyze the vswitch network faults caused by incorrect Switch location installation. A vswitch is a key connection device in a LAN. It has a large number of vswitches in a LAN. In such a network environment, the administrator needs to reasonably deploy the vswitch based on its performance and characteristics, because your improper deployment will pose hidden risks in
Switch-case retrun break, switch-caseretrun
{
If statements process two branches, the if-else-if structure must be used when processing multiple branches. However, if there are many branches, the more nested if statement layers, the program is not only huge but also difficult to understand. therefore, the C language provides a condition selection statement specifically used to process multi-branch structur
Grammarsyntax for switch statements in the Swift language:
Copy Code code as follows:
Switch Expression {
Case expression1:
Statement (s)
Fallthrough/* Optional *
Case Expression2, Expression3:
Statement (s)
Fallthrough/* Optional *
Default:/* Optional *statement (s);}
Note: In most languages, in a switch statement block, the
How to switch IP 173VPN switch IP on the computer
When it comes to IP, it's a lot of people.
1. Some people do the network part-time Navy task, old with an IP has an impact, need to switch IP (many long not specific)
2. Taobao owner's own friends of the brush trade, more also want to switch the IP
3. Some people hi
Many SME internal network structures are simple, with only one switch connecting all employees and servers together and then accessing the Internet through fiber optics. Of course, in order to ensure the security of some hosts and split the internal broadcast packet to improve the network transmission speed, take such as partition VLAN, the allocation of different subnets to achieve. By partitioning VLANs, clients on different ports on the same
Turn on the switchMUI (' #mySwitch '). switch (). Toggle ();Small switch Open exception case solution$ (". Mui-switch-handle"). attr ("Style", "");Occurs when the cannot read property ' toggle ' of NULL is performed because the execution of the open switch needs to wait for the page to finish loadingJust write a timer.
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 labor-saving "lazy people" is more and more modern "lazy people" welcome. Today's switches are increasingly "goofy", such as the Omni-qs-5
Java learning notes (entry) _ multiple select structure switch statements, learning notes switchMultiple choice structure switch statement In java, a switch statement is provided for the multi-path Branch selection process. The switch statement selects one of the multiple operations to run based on the value of an expr
Graphic tutorial of the third-tier switch, graphic of the third-tier SwitchRecently, the price of vswitches has been greatly reduced. Some models of some domestic brands have fallen below RMB, which is almost the same as that of hubs. With the updates of People's cognition and the demand for bandwidth, switch replacement of the hub in the network architecture is the trend of the times, and "switching to the
This article for Bo Master original, reproduced please indicate the SOURCE.Switch switches: The switch switch has only two options, true or false, as Required. So we think of the HTML CheckBox control and use it to do it.id= "switch" type= "checkbox" class= "switch" />however, in the browser, the checkbox has a f
1. The uiswitch class provides an on/off user control.
- (void)viewDidLoad { [super viewDidLoad]; self.mySwitch = [[UISwitch alloc]initWithFrame:CGRectMake(100, 100, 0, 0)]; [self.view addSubview:self.mySwitch];}The default status of the switch control is disabled. You can change the on Attribute of the uisiwtch instance. You can also call the Seton method as follows:
[self.mySwitch setOn:YES];If you want to receive a notification when th
1. Picture switchingThe modified image will be modified//h5//jsvar img = document.getElementById ("img") in IMG. Img.setattribute ("src", "img/2.jpg"); 2.video played video to switch between images--failed1. Follow the image switch, the modified video playback does not change//h53.video Next SuccessH% Summarize:1.video played video is its own attribute in SRC, not its child elements in the first 2.documen
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