Instead of being a physical disk, it is a virtual one represented in the form of a single file. You can think about it like the DVD containing Windows 7, or Windows 10. Cisco IOS ImagesĪ Cisco IOS image is a file containing the operating system, normally in. However, you can also use it to store some logs and then push them to a server. The most common thing you will do with it is downloading a new IOS image to change the boot of the device. Instead, you will have a lot to do with the Flash. Probably, you will never need to work with the NVRAM. In the following table, a quick comparison between the two. Among them, we have the image of the operating system, and the VLAN Database (only for switches). The flash, on the other hand, is an SSD device of a few MB in size and holds different files. The NVRAM is a simple Non-volatile RAM with the main purpose of holding the startup configuration.

Flash and NVRAM are implemented with different technologies, as they have different functionalities. The majority of Cisco devices store files in two hardware components: the Flash and NVRAM. File Management in Cisco IOS Flash and NVRAM In other words, our final goal is to be a master of File Management on Cisco IOS. However, we will also see the syntax to check the files on the router, and how to use TFTP and FTP. The Requirementsĭue to the limitations of Packet Tracer, we have one simple requirement: downloading a specific file from the server. The switch is just blank, and has no IP address, all working in VLAN 1.

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