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Forum Discussion
HI, I have an ORBI RBR850 it doesn't seen to be assigning IP addresses to wired devices.
My RBR850 is not allowing wired devices on my network to be assigned IP addresses. My router is configured with 15 mac addresses that get static IP addresses, most of these are wired, TV, Amp, DV...
Does the TV have different MAC addresses for the ethernet and WiFi interfaces? Orbi IP assignment is strictly by MAC address, so if they are different..... they are different!
An interesting choice for the Orbi IP subnet to be 192.168.2.x, rather than the more typical 192.168.1.x Is the Orbi (gateway) 192.168.2.1?
Hi, and thanks for the reply.
Yes your right, the MAC address on the TV is differernt for the wired v wireless. That answers that question.
I used 2. for the network here at our farm as we have another place in Sydney that uses 1. I didnt want any IP confilcts if I ever put a VPN between the 2 places.
Yes the ORBI uses 2.1, I have another 2 routers set up as wireless gateways, one in my shed and the other in the old shearing shed, only the ORBI is configured at a DHCP server. The other routers use 2.2 and 2.3.
On the older residential Orbi, I would use the debug option to capture the LAN/WAN traffic.
i.e. http://orbilogin.net/debug.htm
After it starts capturing, I would power up a bunch of devices so that they go through the DHCP process.
Then, save the file to my PC and open the file lan.pcap (inside the zip file) with Wireshark.
Set a display filter of dhcp on Wireshark and it should show all of the devices going through the DHCP process.
i.e. request, offer, etc. https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol
If the DHCP traffic does not get captured at the Orbi LAN interface, "The game's afoot."
Either the Netgear or Cisco switch is blocking DHCP. Maybe there is a VLAN set up by accident?
I keep a 50ft ethernet cable on hand so that I can connect devices directly to the LAN port on the Orbi router.
(a 100ft cable is about $20US, but my house is so small I have never needed one that long.)
The DHCP offer should show:
- The IP address offered
- Subnet mask of 255.255.255.0
- Gateway address of 192.168.2.1
Also (on the original Orbi) DHCP assignments are written to the Orbi Log (web interface, Advanced Tab, Administration Menu, Logs.