We have a bunch of 24 port switches - each plugged into a port on our firewall with it's own subnet.
All of the clients attached to a particular one of the switches would lose most connectivity every couple minutes for a minute or so.
so for instance
192.168.31.15 would be pinging
192.168.31.1 (it's own gateway)
192.168.1.1 (gateway of servers IP)
192.168.1.7 (main server)
1.1 and 1.7 would fail, but somehow 31.1 would still reply.... BUT firewall company says the packet never got to them because sniffer saw nothing come in during that time.....
Anyway - so we rebooted switch - issue persisted - so we moved all the cables from that switch to another switch on another subnet... things are working fine so far...
strange thing is we can plug in a laptop to the original "Bad" switch and now pings run fine on it....
Totally confused - any idea what the issue could have been?