Weird Issue - No download speed but correct upload speed

Soldato
Joined
11 Apr 2006
Posts
7,202
Location
Earth
Hi

It doesn't seem like my network team have any idea what is causing the issue so I am coming to the right gurus.

We have a 20Mbps/20Mbps fibre connection and through random times in the day the download drops to near 0MBps but upload is not affected. There is 1 server (Dell PowerEdge R630) and 16 clients (Dell 9020 PCs) on 1Gb network (unmanaged switch) going in to a Cisco 887 DSL Router.

The ISP say they can't find any reason for the issues and the utilisation graphs don't correlate with the issues we're seeing.

Does anyone have any other idea what could be causing it?
 
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