Lately we have been getting bandwidth hogging when any user attempts to download updates / youtube / anything large files. The rest of the network is clogged. We have a fibre 20meg line in.
20meg Fibre -> SRX 220 -> Powerconnect 6248 -> Patch Panel -> Users.
We have COS setup on our SRX220 firewall to prioritise traffic to certain server IP addresses in and out to the cloud.
The switches are 2x powerconnect 6248 and are not stacked. They both have RSTP configured on them, and are pretty much default as the rest.
Server is 2012 R2 Essentials Running DNS / DHCP / AD.
I'm not sure on which layer to continue to address this problem. Should I be setting COS on the switches too? I would think the switches would be managing the traffic on their own be default..
I know this thing is really tricky to pinpoint, but are there any clues / logs to look at / potential settings that might be controlling this hogging that I can at least rule out?