In my office, we have a leased line connection which is shared by some 20 users over wi-fi. This causes congestion on the router's end, resulting in slow speed due to high packet drops (and consequent resends).
If someone uses the internet over a lan cable now, his internet also gets substantially reduced.
I have been trying to read up on this, but haven't come across anything substantial as to why the performance of the LAN cable should get affected.
Everyone (in office) seems to be under the impression that if we are on LAN ethernet cables, the network congestion doesn't affect it unless you hit the capacity of the medium itself, and hence, the speed should be okay over the cable.
My guess is, since all is TCP/IP data, the packet drop because of the wifi is significantly affecting the ability of the router to keep serving packets over ethernet as well (Packets dropped over wifi means router has to resend them, and hence it's queue for resending items is significantly high)
So my question is, how does a typical router handle wifi and ethernet packets togather? Do they both get sent through common queue(s) etc? References to diagrams for visualization would be a big help.
Also, what is the specific term for this kind of multiplexing? I have been googling for hours but I can't find much relevant information.