ER7212PC Dual WAN issues when connected via switch first using VLAN
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Hi,
My Setup is as follows...
TP-LINK TL-SG2428P Switch
TP-LINK ER7212PC Router
Initially I had ports 3&4 on the ER setup as WAN, with Provider 1 & 2 coming in, when I pull the plug on Port 3 within a few seconds its switches to Port 4 and vice versa, all seemed to work well.
However, in order to POE my provider modems I connected them to the switch, I had Port 3&4 setup as VLAN1000 and 5&6 setup as VLAN2000, I connect the modem of provider 1 to Port3 and Port4 to Port 3 on the ER, provider 2 goes into port 5 on the switch and then port 6 goes to port 4 on the Router.
Now, internet works fine etc, but when I pull the modem out of Port 3 to test, it does not failover to provider 2, instead a ping of google,co.uk gives me destination unreachable.
So my point is, works fine when all connected directly to ROUTER, but has this issue when connected to SWITCH first, is there a fix or is ROUTER assuming because it can still see Port 4 connection of the Switch it assumes connection stilkl active?
Thanks
Hi @StormFusion
Thanks for posting in our business forum.
StormFusion wrote
Great. It's super clear now.
So, this might work. Theoretically. Seen this before and some say they use this kind of setup fine.
If the link backup takes over, and you unplug the port 3 cable, your port 4 should take effect. But you don't get Internet after unplugging the cable. Is that true?
Have you tested the second line on port 4? Does this cable from the Switch to the Router work separately?
Or test the Internet from the switch. And you also need to check if your VLAN has been set correctly or not. This can affect the connectivity as well.
