Beginner: I learned about the basic features of a layer-3 Switch. Some time ago, my colleagues asked me questions about the basic features of the layer-3 Switch. At that time, I did not give a positive answer, I was also the first to have a problem with the basic features of a layer-3 Switch. In the following days, I checked the relevant information and was satis
Hello, C ++ (20). 4.2.2 represents the switch statement selected by the parallel condition: if ...... If ...... If ......,. 4.2.24.2.2 expression of the switch statement selected by the parallel condition: if ...... If ...... If ......
In the real world, there are also such special conditions:
If tomorrow is Sunny, I will wear a T-shirt;
If tomorrow is cloudy, I will wear a shirt;
If it is rainy tomorrow, I
Lan exchange technology can also be called layer-2 Switch Exchange Technology, the content mainly includes the working principle of Layer 2 switching, network loops, and how to use the Spanning-Tree Protocol to solve Network loops, VLANs, and VTP technologies, this article mainly introduces the working principle of L2 switches and the dangers of network loops. Other content will be introduced later. We all know that the traditional shared Ethernet use
4.2.2 The switch statement that expresses the side-by-side condition selection: If ... If...... If......
In the real world, there is a special kind of conditional choice:
If it is sunny tomorrow, I will wear a T-shirt;
If it is cloudy tomorrow, I will wear a shirt;
If it is rainy tomorrow, I will wear a coat.
This is a conditional choice because it performs different actions according to different circ
4.2.2 The switch statement that expresses the side-by-side condition selection: If ... If...... If......In the real world, there is a special kind of conditional choice:If it is sunny tomorrow, I will wear a T-shirt;If it is cloudy tomorrow, I will wear a shirt;If it is rainy tomorrow, I will wear a coat.This is a conditional choice because it performs different actions according to different circumstances, and it is special because these different co
With the further construction of China's information network, the further improvement of network quality, high-speed, high-performance Ethernet switch will become the mainstream of network product development. switch is an essential equipment for the network of large and medium sized enterprises, it plays a very important role in network construction, it can increase network capacity and improve network s
This digest is from http://www.pconline.com.cn/pcjob/ittest/network/0312/258919.htmlOther literature http://www.jztop.com/s/jiaohjjs/
Comparison of three-layer switch and router
In order to meet the challenge of deepening the network application, the network has been developing rapidly in both scale and speed, the speed of LAN has been improved from the initial 10mbit/s to the 100mbit/s, and the Gigabit Ethernet technology has been widely used at pres
1, into the global configuration mode
Switch-3548 > Enable
Password: ********
Switch-3548 # config T
Switch-3548 (config) #
2, enable the switch HTTP Server
Switch-3548 (config) # IP HTTP Server
3, configure the host name
Switch
After the switch system is restarted successfully and the VRP platform software has been updated, it is necessary to carefully and carefully maintain the updated software, next, let's give some comments and opinions on the switch system.
As a core network terminal in a LAN, maintaining the switch system becomes very important. In order to make the LAN work more s
Tab tab switch effect JavaScript Summary
It is very common to switch tabs on current web pages. HoweverTab SwitchBut there are a lot of things to be aware of, how to use the least code, the most flexible implementation. JavaScript code implemented by 37 tabs is collected here.
Non-Original Source Network: original address: http://paranimage.com/37/
1) EasyTabs 1.2 With autochange-you can set the tab menu in
Cocos2d-x trip _ 39] simulate a switch in LUA
This is actually not difficult, but a friend told me that he encountered the question "Please use lua to simulate Switch" during the interview ...... I think of sharing my previous articles ......
The code is simple:
_ G. switch = _ G. switch or {} _ G.
Slow network speed is a common type of switch failure. We need to carefully analyze the error records of the faulty switch so that we can fundamentally solve the problem and avoid repeated errors later. When the network scale is relatively large, the "load" of switches that shoulder network data forwarding, content filtering, and management control tasks will be very heavy. In addition, like a person's heal
As a network operations engineer, if the management of the routing, switching equipment more, then you will also encounter the same problem with me: The device configuration is often adjusted, especially the access layer switch, in case you forget to save the configuration, and the next day a switch power-down restart, you have forgotten the previous configuration, Causes the network restore configuration t
With the development of China's exchange industry and the promotion of updates and upgrades of the soft switch technology, we mainly analyze the development relationship between the soft switch technology and the Next Generation Network. Over the past few years, with the rapid popularization and maturity of domestic IP phone technology and successful market operation practices, people have been paying more
Of the six Ethernet switches we tested, the Edimax es-5800r and LeaPComm6004 switches are not managed switches, Accton ES4508, and the Thinker3800 switches of the creators are all network-management switches, 3Com 4900 is to support the three-layer and four-layer switch, Shenzhou digital D-link DGS3308TG is a three-tier switch.
Performance is the brunt
The 6 products include all copper ports, all fiber po
An improper port connection between switches in Ethernet can cause network loops, and if the associated switch does not have STP enabled, the loop triggers endless repetitive forwarding of packets, creating a broadcast storm that causes network failures. one day, we found a problem with the VLAN in the network running performance monitoring platform of the campus network--the connection between the access switch
VLAN in the initial design of the network can bring great benefits to the future expansion of the network.
In ordinary small enterprises, the use of routers to divide VLAN is a cost-saving method, but in large and medium-sized enterprises, the use of routers to divide the VLAN will seriously affect the performance of the enterprise network, and the communication between VLANs must be routed to achieve, therefore, The three-layer switch with routing
network security protection not perfect, the network security can not rely on single device, single technology to realize has become the consensus of the industry. In the "soft and hard combination", "internal and external" and other industry recently widely promoted by the security strategy, the switch as the backbone of the network equipment, naturally also shoulder the task of building network security defense. The
In recent years, with the hundred trillion, gigabit, even the gradual popularization of gigabit LAN, broadband LAN, and even wide range of bandwidth network applications, driving the development of the exchange technology. Enterprise applications, the rapid development of the Internet, E-commerce, e-government, electronic trade, electronic futures, such as the use of network transactions, in the acceleration of logistics, capital flow turnover, but also accelerated the rapid increase in informat
1. Commands supported by the switch:
Switch Basic Status:
Switch:; ROM state, router is rommon>
hostname>; user mode
hostname#; privileged mode
Hostname (config) #; global configuration mode
Hostname (CONFIG-IF) #; interface State
Switch Password settings:
switch>enable; a
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