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This question is an exact duplicate of:

I have a Wireless Access Point device, which I am planning to put into BeagleBoard-xM, in order to achieve wireless communication (LAN). However, I can't find it's IP address. I mean, I have to know it's IP address in order to connect with BeagleBoard-xM via a terminal emulator.

For the moment, I have this device connected via Ethernet on my router. My router's setting page shows I have this device connected, but no further information. Is there any way to find the IP address of the Wireless Access Point?

I hope of being understood. Any help would be really appreciated.

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marked as duplicate by random Jan 4 at 18:24

This question was marked as an exact duplicate of an existing question.

If its connected and assigned an IP by the router, it should show the IP in the DHCP table of the router. – AthomSfere Oct 25 '13 at 15:27
My mistake. Router's setting page shows no device connected, but status of the Ethernet port is up. DHCP server is enabled. What do I miss? – dempap Oct 25 '13 at 15:45
The status of the port being up just means that there is a link. Not that there is any data being exchanged or any IP has been assigned or even requested. So the device might not even have an IP yet. – Hennes Oct 25 '13 at 16:08
A WiFi client connects to a SSID. When the connection was successful, the client gets an IP-address and knows the access point's IP-address. – ott-- Feb 20 '15 at 20:32

Type: arp -a (look for the MAC address of your access point, and note its IP address)

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An access point will probably use one of the following IPs, though it doesn't have to:

From Linux, you should be able to do:

sudo ifconfig eth0 up
sudo ping

replace the 192.168.0 in the ifconfig line with the first three digits of the other IPs, and if you get a response, that's your number. The 23 is just a random number between 2 and 240; avoid numbers used on other computers!

As a last resort, use nmap to do a host scan:

sudo nmap 192.168.0.*
sudo nmap 192.168.1.*

Once identified, the following:

sudo route add default gw

will enable access to the world through the gateway, should you want. Finally, to get a nameserver (so you can ping "", say) find out the address of your ISP's nameserver and do:

sudo echo "nameserver $ISP_DNS" >/etc/resolv.conf

The above should be replicable with DHCP but only if the DHCP server on the access pont is running and configured properly!

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