Can I remotely disable the switch port through which I control it, after which I will lose control of the switch?

Question

network hardware

Can I remotely disable the switch port through which I control it, after which I will lose control of the switch? How does it communicate with the local network?
Let's say I want to disable the port and make a mistake by disabling the port into which the cable of the upstream switch is plugged, can I accidentally disable my ability to manage it?
Although in order to accidentally disable, for example, trunk port 24, you need to try.

Answer 1

yes
yes
no, tale about

I forgot add when I wrote " switchport trunk allowed vlan", I had to go restart the switch

based on real events of very, very many people. As well as "copied the wrong line", and other other "human factors".
For protection, there are mechanisms like safe-mode on Mikrotiks or commit confirmed on Junipers, which will return everything back if the connection is not restored.

Answer 2

disable the switch port through which I control it, after that I will lose control of the switch

Unexpected, but true.
How to secure - depends on the switch.
For Cisco - configure revert / confirm
For Mikrotik - SafeMode
, etc.

Answer 3

You can turn it off and lose it, yes.
Therefore, in large systems and networks, various methods of protection against such an incident are used, starting with auto-rollback to the previous config when connectivity is lost and ending with a modem hanging on the console port.

Answer 4

There is an old saying

Remote firewall configuration - for a long trip

you can’t configure anything on the prod without a safe/confirm mod, and in every server room, at least 1 console string must be in a visible place, just in case

Answer 5

And if it is, for example, Zyxel, then you still have many options to shoot yourself in the foot and disable control before resetting to factory