I have recently upgraded my Netgear WNDR3700 router to an Edgerouter Lite and I have WiFi through a pair of Cambium E400 APs. I now want to re-purpose the Netgear as a 5.0 GHz wireless bridge to a Sony stereo in our kitchen. The stereo has 2.4 GHz WiFi built in, but we have problems with that due to the proximity of the microwave. So I want to connect it via ethernet to the Netgear, then back to the E400 via 5.0 GHz WiFi.
I've tried setting this up on the Netgear using both DD-WRT and Gargoyle firmware and testing with a laptop connected via ethernet to the Netgear. But in both cases the laptop cannot get an IP from the ERL through DHCP. I've followed the set up instructions for the bridge client and with a manual IP set on the laptop, it can connect back to the ERL no problem. But when I set it's IP to auto, it can't connect.
I've searched Gargoyle and DD-WRT message boards without finding a solution. It seems some other people have struck the same problem, but haven't appeared to solve it. With the exact same Gargoyle or DD-WRT settings that work for some people, for others the DHCP doesn't work. So it sort of seems it's related to something different on the main router/AP side of the set up.
So, I'm wondering if anyone could shed some light on why the ERL isn't successfully giving the bridged laptop an IP. Is there maybe some way to debug DHCP?
The test set up is:
ERL-----E400 - - -(WiFi) - - -WNDR3700-----laptop