Over 20 years experience in the IT field, last 13 as the Jack-Of-All-Trades I-T administrator for a NorthEast US Communications company. Familiar with all Windows O/S as well as Lync/Skype-for-Business, AdTran routers, Avaya switches, Cisco firewalls, and basic Linux tasks.
To back up @notverypunny when I have seen this behavior on our network, 99% of the time its rogue piece of equipment that starts handing out its own DHCP conflicting with ours. Check that users are NOT plugging in or connecting non approved devices, like travel routers or other router devices. We install a lot of equipment ofr custoemrs that our techs are suppsoed to plug into "isolated' networks and usually the , um "forget"
Fiber cut in our area causing outages. None of our offices affected directly but some of our users are down.
Server moves this evening going into colocation center will be remotely changing ip addresses and the like
@JaredBusch Looks to be available today
Number of their products are OEM to isp and other manufacturers. We have a DSL backup circuit using an ORM Zyxel router. Will be disconnected on Monday as we don't need it
Building new media server for home, in the research stage right now. Probably plex on a pi with a USB drive as we don't have much. Will probably build an nfs file server out of junk parts as well
Check video drivers had this happen on 2 machines with old drivers after 20h2 came down
@gjacobse you will probably be stuck with Avaya or maybe Shoretel/Mitel if the fed is involved
actually in the office for a 1/2 day today first time in I think 9 months. As always tons of junk left on my desk nothing worth keeping or saving.