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N300 DHCP weirdness
I just installed this router on a rather complex home network. The WAN port is from a DSL router, the wireless is for a nearby house, and the LAN ports go a few places, one of which is a Ubiquiti ra...
After all the hand wringing, I replaced the antenna (.200 address) and everything now works. Very weird mode of failure. Sorry for all the traffic over a dead end!
Hmm, your laptop is getting 192.168.1.3 via DHCP while your pool is 49-100? I'm gonna guess that you have another router. Or else you are connecting to another network and don't realize it.
I've been messing with the pool, so I may have mis-spoken, but it is clearly something curious. There's another wireless router on one of the LAN ports (about 75m away in a locked building) that I've never looked at, and maybe it's plugged in wrong and being a second DCHP server? Not sure that explains the main symptom, but I'll figure that one out tomorrow. I also have another N router in my parts bin, so I can try that one after I resolve your mystery. Thanks for seeing an obvious issue!
Yes, if the other router is connected to the main network through one of its own LAN ports, and if its DHCP server it active, then it can cause major troubles. Clients that obtain IP addresses from it will send packets to it instead of the main router. Another possibility is that the second router is using the same IP address as the main router. This would confuse the heck out of devices.
If you are using the second router to provide Wi-Fi, then you should disable its DHCP server. And make sure that its IP address doesn't conflict.
Like I said, the other router hasn't been looked at - I inherited this whole network from someone that was too color-blind to make an RJ45 connection consistently.... I haven't seen it (ever) but it's quite possible that all your concerns are true. I'll investigate tomorrow. Wasn't a line of investigation I would have discovered on my own - thanks.
I wasn't the other router. The device was actually a Netgear N150 Access Point. After retruning home and downloading the manual, I see it doesn't have a DHCP server and it uses a static IP of 192.168.1.100 (after a reset to default).
The odd DHCP address was because my last settings had expanded the pool to "1 to 250".
I still can't ping or connect to my device .200. I'll take a second laptop on my next trip and see if I can talk to it as a static IP.