Guestshells running CentOS 7 will be unable to update or install system packages since the the default repositories have been deactivated (EOL).
This article shows how to configure and use "Vault" repositories if updating to a newer version of the NX-OS Guestshell running Rocky Linux is not an option.
Guest Shell is an LXC container that runs on Nexus switches (if enabled). Typically this separate execution space is accessed from the NX-OS CLI by typing guestshell. This article shows how to enable SSH within the Guest Shell so you can SSH directly to it.
This guide will show how to use/allow public key authentication for SSH connections to Cisco Nexus (NXOS) and Catalyst (IOSXE) switches.
Some time ago I wrote about my first venture into creating Jinja2 switch templates for FreeZTP. This is a follow up to that post after having an opportunity to revisit the process for another project.
Network security will always be more important than ever before.
This statement will remain true regardless of when this topic is discussed. Security is consistently being tested; whether it be voluntarily via hired penetration testing, or not so voluntarily by bad actors, or "BADDIES" herein.
On IOS switches with EEM, protect yourself (and less careful Jr engineers) with this applet that will prevent allowed-vlan-mishaps on trunks!
Secure NX-API calls using HTTPS with a self-signed certificate.
About a year ago /u/packetsar shared FreeZTP on reddit, just in time for a project that required upgrade/configuration of 400+ IOS-XE switches (3650/3850, several stacks). Over the following months, he was extremely receptive and accommodating with feature updates and tweaks; so kudos, pal.
These are my own versions of the ever-evolving Port Description EEM applet for Cisco IOS/IOS-XE; based on Joe Clarke's Cisco Communities thread, Automatically Set Port Descriptions.
This was created for and used with FreeZTP, but can likely be used with any Jinja2 templating system.
When this snippet (located at the bottom of this post) is added to a Jinja2 template it will automatically build out an EEM applet that will set switch priorities and renumber all switches in the stack according to how they were allocated in the FreeZTP keystore.