I have recently taken over a network with D-Link X stack DES-3526. I am a novice when it comes to data switches. The switches are configured to separate different parts of the offices within the building (VLAN), I understand.
They are also used for VOIP.
The building gets broadband through a router which if fed to the switches.
Everything has been working fine until today, I now have the following challenges:
1) No internet access for some users, this is random i.e the same office has some internet access on some ports and not others.
2) I notice some ports with orange colors, where most of them are green.
I need an idiots demo/ document, that can bring me up to speed, where do I start, thank you.