On Mon, 2 Aug 2021 at 03:04, Samuel Sieb <sam...@sieb.net> wrote: > On 2021-08-01 7:37 p.m., Tim via users wrote: > > A device with multiple connections ought to be prioritising them in > > some way (and I'd certainly rank wired interfaces above wireless). Then > > trying to use that interface in preference. Or in some cases, you > > might want to have plugging in the wired interface automatically > > disconnecting the wireless interface. >
My desktop has both wifi and ethernet active, with different IP's. I use it with a wifi to ethernet bridge for connecting gear that doesn't have wifi (easier than figuring out how to have a temporary long cable that won't get tangled up with dogs). > > > > Your two interfaces should (nay must) have different MACs, likewise > > with numerical IPs. Any routers and switches should be aiming return > > traffic back at the same interface. > > I usually configure dhcp to give the same IP address to both the > ethernet and wifi interfaces. This lets you disconnect the ethernet and > move around without losing connections. And makes it easy to find the > device remotely however it's connected. Many years ago this did > sometimes have issues, but for at least several years this has been > working perfectly. The ethernet connection has priority, so connections > will use it if it's connected. > My POE switch stopped providing POE to the access points (except the one in the master bedroom, which lit up a 2AM). This happened a few weeks past the 3-year warranty period, corresponding to the start of the Olympics! Given that power went off and came back for one AP, I suspect software rather than a hardware failure, but the vendor's tech people couldn't find a way to get the POE back, so the switch was replaced. I tried providing wifi with a couple old Apple Airport Extremes (AAE, normally used with wifi off as ethernet bridges). This worked for a few hours, then devices were reporting no internet access, and the AAE's had 169.254 addresses. The replacement POE switch (different maker) worked fine except that TV set-side boxes wouldn't work. Fortunately, it was easy to move them to the ISP's router. All this reminds me of https://www.alfredtong.com/cisco/cisco-switch-causes-duplicate-ip-address-conflict-errors-windows-7/ which once caused headaches for a workshop I was teaching. -- George N. White III
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