With the development of China's exchange industry, it also promotes the upgrade and improvement of the core layer switch technology. Here we mainly analyze some fault analysis and troubleshooting of the core layer switch. The LAN of multiple branches directly accesses the local headquarters enterprise network through 10 m Fiber Channel of the local carrier. The networks of all local branches are converged to the core layer switch, and the core layer s
Enterprise switches are worth learning a lot. Here we mainly introduce common troubleshooting methods for enterprise switches. Enterprise switches have various faults, and different faults have different forms. In case of failure analysis, you must use various phenomena to flexibly use troubleshooting methods (such as exclusion, comparison, and replacement) to locate the fault and troubleshoot it in a timel
ISA Server troubleshooting Policy
10.2 ISA Server troubleshooting Policy
System methods are essential for successful troubleshooting. In the event of an unexpected ISA Server error, You Can troubleshoot the error based on the user or the data packet. This section provides troubleshooting policies for two types of conne
When installing the linux File Server, skip the troubleshooting tutorial-Linux Enterprise Application-Linux server application information. For details, refer to the following section. Please try your best to use the tree mode.
Troubleshooting during system installation
Troubleshooting during System Configuration
Troubleshoo
Vswitches are still commonly used, so I have studied common troubleshooting methods for vswitches. Here I will share with you some of them, hoping they will be useful to you. Vswitch faults are diverse, and different faults have different manifestations. In the case of fault analysis, you must use various phenomena to flexibly use troubleshooting methods, such as exclusion, comparison, and replacement metho
In daily network fault maintenance, the most commonly used equipment is the switch, especially the access layer switch, which serves as a bridge connecting users and switching routing devices. The switch acts as an intermediate, it plays a very important role in troubleshooting network faults. If we have an understanding of its own faults, we may be able to help us quickly and more accurately identify and solve problems, we will share with you the
I. Network Complexity
General networks include routing, dialing, switching, video, WAN (ISDN, frame relay, ATM ,...) , LAN, VLAN ,...
Ii. Fault Handling Model
1. Define the Problem)
Detailed and accurate description of fault symptoms and potential causes
2. collect detailed information (Gather Facts) R> Source: key users, network management systems, routers/Switches
1) identify symptoms:
2) Repeat the fault: The verification fault still exists
3) fault frequency investigation:
4) determine the f
From: http://www.pcdog.com
The cause of an error on the IIS server is complex. Errors such as service startup failure, IIS process interruption, or site failure will be recorded in system logs. No matter what errors occur in IIS, you should use the Event Viewer to view related events recorded in system logs before determining the troubleshooting solution. Some errors are apparently caused by hardware damage to the server, while others are often imperc
Network diagnosis is an important technical task that manages and makes good use of the network to maximize its role. This article briefly describes the hierarchical diagnosis technology, discusses the diagnosis of various router interfaces, and reviews the troubleshooting of the connectivity fault of the interconnected network.
Network Fault Diagnosis Overview
Network Fault Diagnosis: based on the fault phenomenon, the Network diagnosis tool is used
We all know that each computer needs an address to access the Internet normally. This address is what we often call an IP address. How can we effectively manage these IP addresses as network administrators? You can set the corresponding IP address, subnet mask, gateway address, DNS address, and other network parameters for each computer, but it is very cumbersome and heavy workload, conflicts often occur in practical applications.
How can we effectively allocate these network parameters? The DHC
Faults are inevitable during network management and O M. If an administrator attempts to build a zero-fault network, it will be futile. There are too many randomness and contingency factors in network faults, not to mention human factors. Therefore, what administrators need to do is to master the network troubleshooting skills, accumulate experience to cultivate a keen sense of smell, and be able to quickly locate and eliminate faults without detours
In an object-oriented program, the largest switch/case statement I've ever seen has more than 20 conditions. During the run, the code module executes all the conditions each time. Each condition is responsible for creating a new object that is used to communicate with the external use of the application API. After performing some general troubleshooting on one of them, I began to look at the interfaces implemented by the application. To my surprise, e
It is very useful to know some troubleshooting methods for access networks, and it also gives us more convenience in actual use. So I have studied the specific implementation methods of access network troubleshooting, And I will share with you here, hoping it will be useful to you. As a comprehensive technology, network fault diagnosis involves many aspects of network technology. Before learning the concept
DHCP protocol troubleshooting problem. This time, we mainly aim at the failure of clients to obtain IP addresses through the DHCP server. In this regard, what problems should we pay attention to, as well as its analysis and specific handling steps? Next we will look at it in detail.
DHCP protocol troubleshooting ◆ Network Environment
As shown in. In this networking environment, you can configure a global ad
1. Serial Port troubleshooting
When a connectivity problem occurs in the serial port, in order to eliminate the serial port fault, the show interface serial command is generally used to analyze its screen output report content and locate the problem. The start of the serial port report provides the interface status and line protocol status. Possible Combinations of interfaces and line protocols are as follows:
1) serial port running and line protocol
[-]
Memory troubleshooting tools and related documents introduction focus
1 procsysvmmin_free_kbytes
2 procsysvmdrop_caches
3 Procsysrq-trigger
31 interpretation of the echo m Procsysrq-trigger output
4 Cat Procslabinfo
5 Cat Procmeminfo
51 Important Information
6 Top Information
7 Free Command
8 other files in the PROCSYSVM directory
5. Memory
method in the maintenance of the computer. Replacement refers to using normal switch components to replace faulty parts, so as to find the fault point. It is mainly used for the diagnosis of hardware faults, but it should be noted that the replaced parts must be the same type of switches of the same brand and model.
Of course, in order to make the troubleshooting work follow the rules, you can analyze the faults according to the following principles.
Wireless troubleshooting is what we will explain the content of this article. To cut into our theme from four aspects. Includes whether it is a hardware issue, how the access point is connected, whether the device is configured incorrectly, and whether multiple access points are not in the customer list.
Wireless troubleshooting One, is a hardware problem
When there is a problem with the wireless network,
Believe that many users have encountered the power switch, the fan works but the computer does not start, for the system after the boot of a small number of problems, most users can also be resolved, but encountered even on the boot can not start the problem, most users do not know where to start to solve. In fact, the computer can not start the failure of the normal troubleshooting is not difficult, today small series on the fan work but the host can
Compared with a PC, the probability of a server failure is much lower, but the loss caused by the failure is also large. As a server maintenance personnel, they need to know some basic knowledge about server troubleshooting, know what they can do during maintenance to solve problems most quickly, and reduce the downtime of faults.
This document is not a complete manual for server troubleshooting. However, i
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