Which layer does the repeater, Hub, switch, bridge, and router correspond?
First, we need to analyze the functions of each device in detail:
I. RepeaterRepeater works on the first layer (Physical Layer) of OSI. Repeater is the simplest network interconnection device that connects two or more network segments in the same network. It mainly implements physical laye
A repeater or hub cannot isolate a conflict domain and cannot isolate a broadcast domain, a bridge or a switch can only isolate a conflict domain from the broadcast domain, and the router can isolate the conflict domain and isolate the broadcast domain.ResolutionThe first thing to know is the conflict domain and broadcast domain, when a piece of network card send information, it is possible to conflict with
1: first, these devices all work at different levels, such:
2: physical layer device:
Repeater or repeater: works on the physical layer. It is a simulated device used to connect two cable segments. The attenuation signal of one line is amplified, restored, and placed on another line, A repeater does not care about the concepts of frames, groups, and headers. It
transmitted between them to form a larger network. The reason why a router is at a critical position in the interconnect network is that it is at the network layer. On the one hand, it can span different physical network types (DDN, FDDI, Ethernet, etc ), logically, the entire interconnected network is divided into logically independent network units, so that the network has a certain logical structure. The main task of a
(this example is12345678), After connecting, as shown in the following figure.Note:After successful relay, the wireless signal sent by the TL-WR700N and the main route signal SSID and encryption method is the same, that is, there are two identical wireless signals in the environment. However, no matter how many identical wireless signals exist, only the one with the strongest signal is displayed. Therefore, if the main router is far from your compute
Repeater, Hub, switch, and router are all devices generated for different layers of the OSI Layer-7 network model. One by one, they are summarized as follows:
Repeater: Repeater
Is a connection device of the network physical layer, which works on the OSI physical layer. In fact, it is a signal amplifier. It is only r
on the page.First we see a model class, as a demo we will not build a database, as follows:PersonOM.cspublic class Personom{public string Name {get; set;}public int Age {get; set;}}Just two attributes, name and age.Then write a method in WebForm1.aspx.cs to get the user information:WebForm1.aspx.cs:public partial class WebForm1:System.Web.UI.Page{public static list{listPersonom PS = null;for (int i = 1; i {PS = new Personom ();Ps. Name = "name" + i;Ps. Age = + I;Lstps.add (PS);}return LSTPS;}}T
Do you want to turn off the router when you go to bed at night? This is a problem. Do you want a router?
Nowadays, many people have WiFi and have vrouters installed. They are still surfing the Internet in bed before going to bed, so many people don't care about vrouters at night, is there any need to shut down the router
with the popularization of the network, the router has become one of the essential equipments of every family, which controls the network of our mobile phone, computer and tablet computer. With the advent of the summer, the southern thunderstorm also significantly increased, now the question is: the router at night or thunder to shut it? Do you usually shut down the rou
Turn Xiaomi router into a smart WIFI (1): when someone goes home, it sends a text message to tell you that Xiaomi wifi
I want to turn my Xiaomi router into a smart WIFI. idea is like this: when my wife returns home, Xiaomi router will automatically send a text message to me
turn on and off SSID broadcast
Enter the wireless router Settings page (enter 192.168.1.1 or 192.168.0.1 in the browser), there is a wireless setting in the left-hand menu bar of the router interface that has a basic setting (click on the right side to have a SSID radio switch button in the right-hand section, and the hook opens, Cancel Hook is off).
If you
, select the check box, and select the network connection that allows it to share the internet here is our virtual WiFi card:
Once identified, a shared flag appears next to the shared network card icon, indicating that Internet Connection Sharing is open to the virtual wireless card:
4. Open the Wireless network
Continue to run the following command at the command prompt:
Netsh wlan start hostednetwork
You can turn on the wireless network that we
not injected into the controller, it is used to pass data from the parent state to the child State.Onenter/onexit: These two functions are called when entering or leaving a view of the current stateExamples of URL use:URL: '/inbox 'URL: '/inbox/:inboxid 'URL: '/inbox/{inboxid} 'URL: '/inbox/{inboxid:[0-9a-fa-f]{6}} 'URL: '/inbox/{inboxid:.*} 'URL: '/inbox?sort 'URL: '/inbox/:inboxid/messages/{sorted}?fromto 'URL: '/party/:p artyid/:p artylocation 'URL: '/product/info/favorite?pidjancodeshowaddf
) Explanation: Modify Saveiii. removal of telecommunications remote control1. Open Browser HTTP://192.168.1.1/WEB_SHELL_CMD.GCH2. Input sendcmd 1 DB p mgtserver (note space and case) explanation: Check out the current telecom remote control3. Input Sendcmd 1 DB set mgtserver 0 URLhttp://127.0.0.1 (note space and case) explanation: The concise way is to get rid of the server URL4. Input Sendcmd 1 DB set Mgtserver 0 tr069enable 0 (note space and case) Explanation: Disable TR069 remote control5. In
flash, to be patient wait a few minutes, in the process do not power off or manually disconnect WiFi. After the completion of the erase will automatically restart the Wrtnode, if the operation is correct, you can see the wrtnodexxxx again, re-connect.Method Two: Through the command line brush machineThe PC is connected to the Wrtnode Wi-Fi or via a network cable to the Wrtnode, and the Linux system uploads the firmware with SCP, and the Windows system can upload the firmware winscp software.Pla
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