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Because Cumulus Linux is both Linux Linux, Cumulus Networks recommends that even with small networks or test labs, network admins should make the jump to deploy, provision, configure, and upgrade switches using automation from the very beginning.
The small up front investment of time spent learning an orchestration tool, even to provision a small number of Cumulus Linux devices, will pay back dividends for a long time.
Cumulus Networks software melds the Linux host world with the networking devices world.
Each world comes with its own paradigm on how to upgrade software.
The biggest gain is realized during the upgrade process, where the network admin can quickly upgrade dozens of devices in a repeatable manner.
Switches, like servers, should be treated like networks to manage their switches.
Before we discuss the various ways to upgrade Cumulus Linux switches, let's review the general considerations and strategies used to upgrade network devices and Linux hosts.