> -----Original Message----- > From: Jack <ostrof...@users.sourceforge.net> > Sent: Saturday, January 16, 2021 22:00 > To: gentoo-user@lists.gentoo.org > Subject: Re: [gentoo-user] network transfer speed > > I may be way off base here, but if the switch is connected to a router, > packets from one PC go to the switch and then to everything else connected > to it, including both the other PC and the router. Is there any chance the > router is passing packets back to the switch to get to the second PC? I can > imagine that causing lots of problems. However, I would hope it is smart > enough to know it doesn't need to do so, since both PCs show up on the > same router port.
A switch uses the Ethernet MAC destination address to forward a packet only on the 'interested' ports. What you describe would be a 'hub' [1], I don't think it's easy to find one of those on recent networks. Raffaele [1] https://en.wikipedia.org/wiki/Ethernet_hub
