How to back up core network device configurations and parameters (1)

An enterprise's network structure consists of multiple devices, including servers, routers, switches, and firewalls. Detailed network parameters are configured on each device, and Routing Switching is the most important among these devices. Because they are responsible for connecting various clients of the enterprise network, they are like the central nervous system of the enterprise network. Generally, companies of all sizes use a layer-3 routing switch device as the core network device. How can we back up the configurations and parameters in this key core device? Today we will discuss this content.

I. What parameters and configurations do I need to back up?

The core devices are basically layer-3 Routing Switching devices. Which of these devices are the key to the normal operation of the enterprise network?

(1) The OS IOS of the route Exchange Device ):

Each routing switch device has a built-in IOS device. Just like the operating system of a common computer, all data and applications are built on the basis of IOS running. The manufacturer will launch a new IOS every time. The new IOS version will make up for the shortcomings and vulnerabilities of the original IOS, and provide software support for some functions.

However, in actual operation, IOS may also suffer more or less failures, and our core devices will not be able to log on. Therefore, after purchasing a core network device, you need to back up its IOS device as soon as possible.

2) configuration information of the routing switch device:

To make the core network device run normally and serve the enterprise network, you must configure it. Configuration commands are diverse, and the effects of different command combinations are also different. Backing up the user configuration information of the routing switching device is an important part of routine maintenance. Because the configuration of the router is complicated, once the user configuration is lost, manual recovery is not only required, and error-prone. Therefore, user configuration backup should be performed each time the router configuration change is successfully completed.

Next, I will introduce three methods to configure and back up core network device parameters.

2. Backup the configuration of network devices with bare hands:

Although we can use multiple tools to back up core network devices, these tools may not be available in many cases because of urgent tasks. How can I back up the configuration information of network devices? We can solve this problem by using the mark and copy and paste function in the Command Prompt window.

Step 1: click "start-> Run" in the operating system, Enter CMD, and press enter to enter the Command Prompt window.

Step 2: run the telnet command to enter the vro management interface.

Step 3: run the show running-config command to view the current configuration of the core network device.

Step 4: The displayed items are the parameters of our core device. Click the left-click command to prompt the top left corner of the window and click "edit-> MARK" in the menu ".

Step 5: draw an area with your mouse. When you draw the area, you will see that the selected area has been displayed in white. After selection, press Enter. The selected region has been copied. We create a new text document and paste the content into it to implement simple backup of core network device configuration information.

TIPS:

Generally, the configuration information of core network devices is too large to be displayed on a single page. Therefore, we need to perform multiple backup operations. Save the configuration information on multiple screens and combine them to form a backup file for all configuration information.

Step 6: when preparing to restore the backup information, you only need to open the text file of the previously saved backup information, copy the content, and paste it back to the management interface of the core device, all backup commands are executed one by one until the backup information is restored.

Summary:

There is no way to back up network parameters with bare hands. This method is used only when there is no backup tool at hand and the time requirement is tight. It is very cumbersome to save parameters and configurations by copying and pasting them. Therefore, it is more effective to save some configuration commands of network devices, such as simply saving SNMP settings or some other part of content. It is not suitable for storing all the parameter information of the core device.

3. Use TFTP to save the parameters and configurations of the core device:

The standard method for saving core device parameters and configurations is to create a TFTP server. First, we need to create a TFTP server on our computer. Although there are many such software, I have found a tftpd-based TFTP server creation tool that allows you to easily save the parameters and configurations of core devices.

TFTPD tool small file:
Software Version: v3.00
Software language: English version
Software size: 187KB
Software type: Free Software
Applicable platform: windows 2000/xp/2003

1) create a TFTP server:

The method for creating a TFTP server is very simple.

Step 1: Download and decompress the TFTPD package.

Step 2: Run tftpd32.exe in the tftpddirectory.

TIPS:

You will find that the tftpd32 tool not only provides the TFTP service function, but also serves as a TFTP client, DHCP server, and log record server. Due to the length relationship, these functions will not be introduced to you. Interested readers can study them on their own.

Step 3: To save the parameters and configurations of the core device, you must specify a TFTP directory and save the downloaded files to this directory. We use the browser button on the Right of current directory to change this path. It is best to select a directory that does not contain Chinese names.

Step 4: select the IP address of your computer at the server interface, for example, 192.168.1.100.

Step 5: to minimize the TFTPD32 program, he will have started to work. Our TFTP server is also successfully created.

Step 6: test the TFTP server below. Because we specify the root directory of the edisk as the publishing directory of the TFTP server, copy a text file to the local machine E. Then, in the TFTPD32 main program, click the TFTP clienttag, set hostname to 192.168.1.100, set portport to 69,fill in the file we just copied, such as wepkeys.txt. . We have successfully implemented the download function.

Step 7: Upload indicates that the TFTP server upload function is normal.

If the remote device cannot be normally accessed after TFTP is created, you can perform the following checks: first, disable the firewall on the TFTP server, and then check the TFTP creation tool, check whether the upload permission is disabled.