Are you a network engineer? Do you have one of these in your toolkit?
Do you work with fiber optic cables? You should have one of these loopback testers in your toolkit.

https://amzn.to/4nDi4hx Get one today. You will thank yourself later.
What does it do?
https://www.linkedin.com/posts/kevinnanns_a-loopback-plug-is-a-cheap-and-effective-ugcPost-7371893483600793600-T57
https://j2sw.com
https://startawisp.info
https://indycolo.net
#packetsdownrange #routethelight