How to know which SW port the internet link is on

[RacconusRod1]

Hello, I am inheriting an infrastructure that is far from my house. I need to know which switch port the link from my internet provider is on.

[BlakeRichardson]

The dashboard should have an upwards arrow on one of the ports that highlights it's uplink port.

[RacconusRod1]

Port 21 is the internet link?

[Shubh3738]

Are you not using any Firewall (MX)?

This Switch is connected above on Firewall or below?

If Switch is above on Firewall, The ISP Link Cable is connected on 21.

If Switch is below on Firewall (MX), The ISP cable link is on Firewall's Internet Port ( WAN Port).