There are a couple of things that could be causing issues when you LAN is attached. One being spyware - if you...
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
decode the packets you can find out what IP address is still broadcasting traffic. There could also be an error in someone's IP address, gateway, or subnet mask making them jump the router. I assume you are running a firewall, so it may be prudent to upgrade to the latest and greatest version. Your ISP should be able to provide you with the address of the communicating device if you don't have a sniffer. They should also be able to tell you what type of traffic (by IP port, anyway) so that you can more easily narrow this down.
If you don't have a sniffer and they can't or won't help you, try downloading one of the demo versions or a free one just to get you started. More than likely, you have a device or two that is being a bandwidth hog or perhaps your server is trying to communicate with your routers because it is routing.
As you don't say you are having any problems accessing websites, I am assuming that DNS is not a problem, but rather a single device or maybe a couple that are driving your latency up. If you try these things and are still having problems, feel free to send me your results and we can move on to another step.
Dig Deeper on SDN and other network strategies
Related Q&A from Carrie Higbie
Integrating a new unified communications suite with existing infrastructure can seem daunting. Expert Carrie Higbie offers some best practices for a ...continue reading
Networking expert Carrie Higbie explains how a VoIP gateway and an IP PBX perform different functions when transmitting voice data.continue reading
UC expert Carrie Higbie explains the purpose of Port 9875 and why a network manager would need to direct traffic to this port in a VoIP setup.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.