Yesterday, at around 5, about half of my office got knocked off the internet and email. They can still see the intranet though.
I’ve been on the phone with Cisco (the router), our ISP, and today, replaced all the main hardware (exception: the ISP provided modem) and the problem persists.
On these downed machines, if I ping, for example, 4.2.2.2 I get replies instantly, but it cannot reply a ping from yahoo.com or google.com. This is why I figured it was a DNS issue.
However, the ISP is playing dumb, plus the fact that only half the people got hit (and stayed down after replacemnet of hardware is kind of weird).
I’m running out of ideas. Any ideas out there? Much appreciated.
Using Cisco RV016 router, switches are D-Link DGN series 16 (2) port and 24 port(1). All computers are Win XP.
