ARP entries and server/router going awol.
Posted on 2013-01-14
I do some IT support in a local school where quite often the server or the router are no longer pingable, shares disappear and no one can print via the server. This doesn't last but has been wrecking my head for a few weeks.
The arp table on a pc that can no longer communicate with the server or router shows the wrong mac address for the server or router's ip address. On looking up the mac address, the mac address belongs to an Apple or HTC iphone forexample. The school's network is primarily wireless.
Would this be down to the students in the school assigning the server or router's ip address on their smartphones? Or could it be due to some fault in the unmanaged switches?
Your help is greatly appreciated.
Many thanks in advance,