Christmas is slow, so I made an exception and read carefully Russell's lan
loop warning post.
Now, I have conscious, not unconscious (double negative warning to true
English speakers), desire to try to create and observe lan loops in action
for the first time.
The problem I am seeking help with, can I create one with 4 port router of
which 1 port is wlan and two cat5 patch cables?
The router/switch looks this way:
- WAN (eth0)
+- LAN1 (eth1)
+- LAN2 (eth2)
+- WLAN3 (wlan0)
The router is running openWrt.
I also have two Linux PCs, one with wlan and eth, one with wlan only; and
already mentioned 2 patch cables: 2" and 3" variety.
The thing is, I have never consciously experience lan loop. Possibly
because my switches can detect and disable them, possibly because I am too
smart! Not sure which to apply right now.
Wouldn't it be great to mess up my parent's simple network setup, so that
they remember my visit and I can also experience lan loops at the same time?
Any advice, I could follow?
Mery Christmas,
Tomas
On Tue, Dec 24, 2019, 12:40 Russell Senior <[email protected]>
wrote:
> Also, the ports on the ER-X are gigabit as well, so practically speaking,
> assuming the switch is connected to one of the ER-X LAN ports, you can
> connect to either. It might be super-marginally better to connect to one or
> another to reduce contention or switch hops somewhere (which will depend on
> where the majority of the traffic is occuring), but for the most part it
> doesn't matter.
>
> The main thing to avoid is loops. Don't connect switch ports to switch
> ports, ER-X LAN ports to ER-X LAN ports, or more than one link between the
> ER-X LAN ports and the switch ports. You'll know if you did this because:
> a) things will start acting very funny and not work very well; and b) LEDs
> will be blinking furiously. I almost hesitate to mention this because: i)
> you probably didn't read this far; and ii) if you did, it will only give
> you the subconscious idea to try it out.
>
> On Tue, Dec 24, 2019 at 3:27 AM Russell Senior <[email protected]>
> wrote:
>
> > Where is the switch in your network? I don't recall seeing that detail.
> >
> > On Sun, Dec 22, 2019 at 1:09 PM Rich Shepard <[email protected]>
> > wrote:
> >
> >> On Sun, 22 Dec 2019, wes wrote:
> >>
> >> > The phrasing here is not as clear as it could be. It sounds like
> you're
> >> > referring to the two connections as if they are totally separate.
> >>
> >> Wes,
> >>
> >> There are three ports on the PoE injector: AC power off the wall wart,
> >> "Data
> >> In" on the PoE injector in which is connected to either the router (any
> >> LAN
> >> port) or the gigabit switch (any port), and "Pwr+Data Out" which is
> >> connected to the Meraki. My question was to what the "Data In" port
> >> should be
> >> connected: the router or the gigabit switch. Either way, the inejctor is
> >> between the "Data In" supplier and the WAP.
> >>
> >> > ER-X <-> POE injector (with power supply also connected) <-> Meraki
> WAP
> >>
> >> Thank you. That's what I assumed and asked for confirmation which you
> >> supply.
> >>
> >> Happy holidays,
> >>
> >> Rich
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >> PLUG mailing list
> >> [email protected]
> >> http://lists.pdxlinux.org/mailman/listinfo/plug
> >>
> >
> _______________________________________________
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>
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