Hello, all. What happens is a bit weird so let me explain.
Every 10 to 12 days, usually after noon, internet speed goes almost to a standstill. When I try to go to, let’s say www.google.com
on the bottom left of the browser I get messages “… trying to resolve host” etc.
If i try to ping an outside IP address or domain name most of the time i get time outs or if i dont time out the speed is like 1500ms.
If I connect my laptop directly to my Router/Modem then the speed is normal again.
This happens only to computers connected wired or wirelessly to the domain/network.
The topology of the network is as follows.
One Cisco X3000 Modem/Router Connected to an HP Switch providing internet.
Also X3000 is the DHCP provider to the premises. All other computers, printers have manually entered IPs. Also as Gateway they have router’s IP and as DNS1 the server’s IP
One Windows server as Domain Controller and DNS server. In server’s network card as Default Gateway there is the IP (192.168.0.150) of the router and as a DNS1 its own IP (192.168.0.100).
As for the forwarders I have the IP of the providers DNS and Google’s.
And that’s it. I can’t figure out what is wrong with my network. It’s very weird that this happens only once in a while so it’s hard to pinpoint the problem.
I have checked if someone is downloading something big etc. No luck.
Also I have checked with our provider if our DSL line is ok and every time it checks out.
Thank you for the assistance.