Switch Memory and Configuration

Multiple Configuration Files

While you can still use remote storage for startup-config files, you can now maintain multiple startup-config files on the switch and choose which version to use for a reboot policy or an individual reboot.

This choice of which configuration file to use for the startup-config at reboot provides the following new options:

The switch can reboot with different configuration options without having to exchange one configuration file for another from a remote storage location.

Transitions from one software release to another can be performed while maintaining a separate configuration for the different software release versions.

By setting a reboot policy using a known good configuration and then overriding the policy on a per-instance basis, you can test a new configu­ ration with the provision that if an unattended reboot occurs, the switch will come up with the known, good configuration instead of repeating a reboot with a misconfiguration.

General Operation

Multiple Configuration Storage in the Switch. The switch uses three memory “slots”, with identity (id) numbers of 1, 2, and 3.

Memory Slots for Different Startup-Config Files

A startup-config file stored in a memory slot has a unique, changeable file name. The switches covered in this guide can use the startup-config in any of the memory slots (if the software version supports the configured features).

Boot Options. With multiple startup-config files in the switch you can spec­ ify a policy for the switch to use upon reboot. The options include:

Use the designated startup-config file with either or both reboot paths (primary or secondary flash)

Override the current reboot policy for one reboot instance by specifying a boot path (primary or secondary flash) and the startup-config file to use.

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