In my Network one Distribution Switch,Firewall,Routers are connected.Through DS all Access Switches are connected.Firewall inside interface connected to DS and Outside is Connected to Router. the thing is everyone able to access internet with a good speed at the same time Static and Dynamic IP's are translating private to Public and vice-versa. In between this environment dynamic NATted IP Users unable to acces internet suddenly and there is no issue with Statically NATted IPs. Once i fire the Command shut and no shut command on WAN interface of the Router again Dynamic User able to access internet. Inbetween this interval What were happed no one knows even ther is CRC and Input errors are genarating on firewall as well as on Router. And there is no logs found between that time.
Anyone help me on this because it is happening since last few months and it is being headache for us.