I would have thought "Scenario 4" would be the obvious choice. Also, on some switches, you can rate limit individual ports (independently of negotiated or preset speed settings) I can do this on my Netgear GS748T SmartSwitch.
Re: Network Duplex and Speed settings
11 years 1 month ago #23252
Scenario 4 is right. As a rule of thumb, never have the port speed/mode fixed at one end of the link and auto at the other; this causes collisions and interface flapping as you have noted. Either fix at both ends of the link or have both ends auto