Step 1: Prerequisites and Best Practices

System message guide, cisco ios release Catalyst series xl hardware installation guide pages. Cisco catalyst xt: specifications pages. Cisco Catalyst Blade Cisco Catalyst series. Cisco Catalyst Series. Cisco Catalyst Metro. Cisco Catalyst Cisco Catalyst Blade Switch Comments to this Manuals Your Name:.

Cisco IOS Cookbook, 2nd Edition by Ian Brown, Kevin Dooley

Enter text from picture:. Latest comments:. Print page 7 Print document 36 pages. Cancel Delete. Sign in OR. When we want to copy something to or from this router, we have to use the copy command:. I will use the following topology:. Make sure you select the correct directory where you downloaded your IOS image and if you have multiple network interfaces, select the correct interface.

Cisco switch upgrade problem

The copy command works in both directions. I can copy to and from the TFTP server.

When you use the copy flash: tftp: command, it will ask you for the IP address and filename. When you see something between [] brackets , you can just hit the enter button. For example, since I specified the source name, the router assumes I want to use the same file name for the destination.

Here is an example:. Above you can see that I already entered the IP address and filename. Once I hit enter, it will only ask me for the destination filename which I also could have entered. You only need one command to accomplish this:.

Cisco IOS - Wikipedia

The alias parameters lets you use a different name for the filename. Copying to or from an FTP server is also no problem, we can do this with the same copy command. One thing you might have to deal with is authentication. Most FTP servers will require a username and password. Here is the topology I will use:.

Command Line Interface

We can globally configure the username and password that we want to use for the FTP server. When you use the copy command, Cisco IOS will use these values for authentication.

1. How to Upgrade Cisco Router IOS via TFTP and Understanding Cisco IOS Naming Convention.
2. How to Upgrade Cisco Router IOS via TFTP and Understanding Cisco IOS Naming Convention;
3. Step 2: Upgrade;
4. Understanding Cisco IOS Naming Convention and IOS versions!
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This is a great method because of two reasons:. So far we copied a couple of files but how do we know that these files are valid? We can verify this checksum on our router:.

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This MD5 checksum is the same as the one we found on the Cisco website. This tells us that we have the same file as Cisco published and that the file has not been tampered with.



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If the checksum fails, maybe someone has added something nasty to the image. Which IOS image will it select when the router boots?