In the SNMP protocol, we often apply it to the configuration of hardware. With the popularization of SNMP, SNMP is added by default to almost all devices. Today we will focus on the SNMP trap settings in Cisco devices. The following figure shows the specific settings.
1. Set IOS devices (routers)
Config terminal enters the global configuration status
Enable Cdp run
Snmp-server community gsunion ro: configure the read-only string of this vro a
The trap command is used to specify the action to be taken after the signal is received. A common use is to complete the cleanup when the script is interrupted. However, this time I met it because the customer has a requirement: the user who accesses the server from the terminal will automatically run a command after logging on to the server, such as opening the application (the command is written in a file such as. BASHRC, etc.), and finally exiting
floating point operation errors, but also overflow and Division 0 and other arithmetic errors.
SIGKILL
9
It is used to immediately end the running of the program. this signal cannot be blocked, processed, or ignored.
SIGALRM
14
Scheduled clock signal, which is used by the actual time or clock time. alarm function.
SIGTERM
15
The terminate signal is different from SIGKILL in that the signal can be blocked and processed. it is usually used to require t
command kill defaults to produce this signal.
Capture SignalWhen you press CTRL + C or break keys in the execution of a terminal shell program, the normal program terminates immediately and returns a command prompt. This may not always be desirable. For example, you may end up leaving a bunch of temporary files that will not be cleaned up.
Capturing these signals is easy, and the syntax for the Trap command is as follows:
$
The Repeater control provides maximum flexibility among the three ASP. NET data Web controls: the HTML tags it presents can be specified. The DataGrid or DataList automatically contains the content specified by the developer in the preset HTML Tag. Different from them, the Repeater strictly generates the specified HTML Tag during rendering. Therefore, if you do not want to use HTML
Or a series
You must us
Among all three data Web controls, the repeater Web Control provides maximum flexibility in the rendered HTML. The DataGrid or datalist automatically contains the content specified by the developer in the preset HTML Tag. Different from them, the repeater strictly generates the specified HTML Tag during rendering. Therefore, if you do not want to use HTML
Or a series
You must use the
Huayu Marriott International Mall deceptive trap? E-commerce in the domestic belongs to the emerging industry, has a strong development space is very broad, so attracted many businessmen to seek opportunities to join. Many consumers also slowly for the first e-commerce platform to choose their own shopping, slowly replaced the store's shopping model. Huayu Shopping Center is currently in e-commerce platform, many consumer goods to provide a comprehens
Clean up temporary files
You can use trap commands to capture signals, and trap capture signals in the shell are equivalent to signal or sigaction in C or most other languages.One of the most common scenarios for a trap is to clean up temporary files when expected exits and unexpected exits.Unfortunately there are not many shell scripts to do so.
#!/bin/sh# Mak
The Repeater control provides the greatest flexibility in the three ASP tutorials. NET Data Web controls: The HTML markup It renders can be specified. The DataGrid or DataList automatically contains the developer-specified content in the preset HTML markup. Unlike them, Repeater will strictly generate the specified HTML markup when rendered. Therefore, if you do not want to use HTML
or a se
Describes how to use the Repeater control in ASP. NET data binding, asp. netrepeater
I. Repeater for binding controls. NET encapsulates a variety of data binding controls, such as GridView and DataList, but this article will start with Repeater, because Repeater only provides basic data binding templates, no built-in
Introduction
In the previous articles about AJAX, AJAX technology can be used to develop highly-efficient website applications, however, it is far from enough to have AJAX technology for B/S project development. More things will be learned from B/S, however, compared with the complex logic structure of C/S, B/S is still very simple during development.
Data Binding controls are often used when developing B/S projects ,. NET platform has well encapsulated these controls, as long as a slightly expe
Introduction
Paging and sorting are features that are often used to display data. For example, when searching for books on asp.net in an online bookstore, it might result in hundreds of 10 of pages. And the results can be sorted according to title (title), Price (prices), page count (pages), author name (author), and so on. As we've discussed in pagination and sorted report data, the GridView, DetailsView, and FormView all have built-in paging capabilities that can be turned on simply by checki
In the past, the repeater was more efficient than the DataGrid, but I don't know if I didn't test it. I was shocked by a test!
I used the stress testing software (ACT) that comes with vs to test the performance of the two, and measured by the number of accessible users per second.
However, the result is beyond my expectation that the DataGrid is more efficient than the repeater!
Let's take a closer look
In the SNMP definition, we know that it has the Trap function. What does this function mean? Let's start with what it means. First, we can translate traps into traps or traps in SNMP. The agent in the managed device can report errors to the network management workstation at any time, such as pre-defined threshold out-of-bounds. The agent does not need to wait until the management workstation polls the agent to receive these errors. These errors are we
Original address: http://blog.sina.com.cn/s/blog_62eb16bb01014dbh.htmlOnce the trap captures the signal, there are three ways to react:(1) Execute a procedure to process this signal(2) The default action to accept the signal(3) Ignoring this signalTwo. The trap provides three basic forms for the above three ways:The first form of the Trap command, when the shell
The trap command is used to specify the action to be taken after receiving the signal. A common purpose is to complete cleanup when a script program is interrupted. However, this time I met it because the customer has a requirement that a user accessing the server from a terminal will automatically run a command after logging on to the server, such as opening an application (the command is written in. in files such as bashrc), and finally exit and dis
equipment log records summary, easy to manage and query, extract useful log information for network security management use, timely found about security equipment in the process of security problems, In order to better ensure the network uptime.
Comparison of acquisition techniques
Network management commonly used to collect log data, including text mode acquisition, SNMP trap mode acquisition and Syslog mode acquisition, in addition, other acquisiti
We may all be familiar with the DataGrid, but if we have a large amount of data, we have to consider using repeater as our data-bound control. The main difference between a repeater control and a DataGrid (and DataList) control is how HTML is handled. Asp. NET creates HTML code to display the DataGrid control, but repeater allows developers to decide how to displ
asp.net
Originally not how to use repeater, but recently to display a message board the same thing, with grid implementation is not good to see, grid is more suitable for the formal web system, for the type of Web site, or with repeater, encounter the need to nest repeater situation, the collection, It may be used in the future.Original from ms:http://support.mic
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