If you are comfortable with the use of traditional monolithic Cisco IOS images in order to boot the switch, then the BUNDLE mode is likely familiar. pkg files in the flash.Ĭisco recommends that you do not alter these files unless directed by a Cisco Technical Assistance Center (TAC) engineer. The INSTALL mode uses a package-provisioning file named nf in order to boot the switch. This document provides a brief overview of each mode for reference. Review the configuration guide for more details.Ĭisco recommends that the INSTALL mode is used during operation because it allows for a more complete set of features and requires fewer resources upon boot. There are minor differences between the two modes. The Cisco Catalyst 3850 Series Switch has two modes of operation: INSTALL and BUNDLE. Install and configure the TFTP/FTP before you begin. Cisco does not offer a free TFTP/FTP solution. Note: In order to download Cisco IOS XE images from the Cisco website, you must have a valid Cisco Connection Online (CCO) account with entitled credentials. If your network is live, ensure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. The examples in this document use a stacked solution however, the same commands can be run on a standalone switch. The information in this document is based on the Cisco Catalyst 3850 Series Switch that runs Cisco IOS XE Versions 03.03.00 and later. Experience with Cisco IOS ® XE software upgrades.Prerequisites RequirementsĬisco recommends that you have knowledge of these topics: This document describes how to upgrade Cisco Catalyst 3850 Series Switches and provides recovery techniques for software or boot failures.

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