only users from certain building (connected to a individual switch ) are affected ? or all users , I suspect that one of your switch is not working properly . I haven't checked if it's only users from one switch, but I doubt a switch is the problem since resetting the router sometimes solves the is...

could you please give us more details about the network , how the clinet computers are conected tho the router (switches , other devices) ? There are approximately 160 clients, and there are 8 switches. 20 clients connect to a switch, and then each of those 8 switches connect to another switch, to ...

I have no idea. How would I determine that?

Hi. I am the admin of a building network with multiple users, each having to go through a router. As far as I can tell, the router is refusing certain IP addresses. This seems to result in two errors. If I ping the router, for some people it will say "Destination Net Unreachable", in which...