Got an AX1800, I set up repeating via my phones hotspot, i set up the local wireless fine. I attach a 5 port poe switch to lan1 and i attach my computer to the poe switch, but it does not give me a dhcp address when i am attached to the switch. i need to know the steps to do to allow me to get a dhcp address thru the switch.
There is nothing you need to configure.
Just make sure the PoE switch itself does not use any features that will stop DHCP from working.
Hmm anything else connected to the switch?, have you tried directly on the routers port?
One issue i can think off: switches dont have a reserved wan port like routers do, which mean technically every connected port has the potential to be seen as wan by the switch.
So in a bad configuration logically it is possible it sees another port as wan, often a switch reads from port 1 to 8 (in case of a 8 port switch), and if 1 has no link it tries it for port 2, but if port 1 came up back it still runs on port 2.
Now it will not easily make a port 'wan' but this can happen with a concurrent router on the switch.
I believe this thing is called for redundancy it is actually a feature to prevent a one point of failure, but it can go wrong in rare situations.
^ i wonder if something like this is happening, you should try some rounds of elimination to be sure it is not this😉
And if it is, why is that link going down?
Nah.
A switch does not know (nor care) about WAN. It only knows about routing and the routing is always for all ports - it can't „stuck“ like you said.
You are talking about the STP (Spanning Tree Protocol) but this isn't an issue here because there is just 1 switch. And it would not get stuck either - it would resolve it within a few minutes.
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This is true, but it does not rule out a bad implemented switch.
Especially the tp-link ones can randomly sent the vlans reversed over the managed vlan when there was a little outtage, so out of no where the management page joined a completely different network ive seen it happening (its bad implemented), my only solution was to restart them on the exact order.
But if one becomes a rogue switch things like dhcp rebind protection or other protections can block too, because packets get sent with the same source address as the router, this is why it makes especially these tp-link switches so tricky and especially with 2 of them.
Ive no idea what else OP has connected to it or which brand, and if there are second switches involved too.
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Yup, OP needs to provide more information for sure.
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