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It's good practice to back up your Ioway see images especially as your network grows.

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You're going to want to have a central place to back up and store your Aiwass images and configuration

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files.

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So it's good practice to back up your Iowas files to a central tief server or server.

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This is useful for example if an Iowa image gets accidentally deleted will be raised or becomes corrupted

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you're going to want to be able to restore your iOS from A to B server.

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So good practice to copy from the flash to a TFT server and have that available if you need to restore

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an image or perhaps when you upgrade a router you encounter issues and may need to downgrade back to

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an older version of operating system.

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So good practice to have your Ioway see images backed up to a central location.

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Now what about Iris images.

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They have these cryptic names that may be difficult initially to understand.

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So in looking at an image the first part of such a see twenty nine hundred is the platform.

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This is an image for a twenty nine hundred Cisco Rodda the universal canine option means that this image

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is universal.

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So it's a single image set that includes the IP base security unified communications and data feature

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sets.

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Each router is activated for an IP based feature set.

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However other feature sets you'll need to activate those features by loading a license onto the router

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and we'll discuss that in a separate video.

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So in this example the platform is a Cisco twenty nine hundred series integrated services router.

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The third part in Zayd or M.Z. indicates where the image runs and if the file is compressed in this

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example the image is run in RAM.

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So M indicates runs in RAM and Z or Zed indicates a compressed image digitally signed Cisco Aiwa images

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identified by a three character extension in the image name stands for digitally signed software.

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Pos stands for production or special development image so p in the name indicates that it's a production

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image that is approved for general release.

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A s indicates a special image that is development software and should only be used in special circumstances.

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The indicates the key version that is used to digitally sign the image key version is identified by

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an alphanumeric character such as A B C..

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The fifth part 15:2 hyphen for Dot M 1 indicates the software version number and the final part burn

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is the file extension.

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This indicates that the file is a binary executable file.

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Just be aware that the Cisco Iowas naming conventions do change.

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The best place to look for information is on the Cisco Web site.

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For example on the Cisco software downloads help and if a q page you'll find a lot of information for

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example the Cisco Iowas software release naming convention is explained so in this example we have a

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major release of told that one the maintenance release enterprise designator six build of the release

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and first rebeled of release date.

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Have a look at documents such as the following for instructions on how to download software and how

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to discover more information about the different options available with regards to the Cisco Ioway s.