We have a Cisco 1811W router for our connection to the Internet and multiple Catalyst 2948 and Dell 5324, 5448 switches in our network. We have a single subnet network. I recently unplugged one of the Catalyst 2948 switches from the network and about...

I am using an 1811 router to connect my network to the Internet. Outgoing mail from our server was getting delayed. I setup packet sniffers on the inside and outside of the router and found that not all the packets were getting through. The server se...