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Finding the Omega's IP Address

Every device on a network is assigned a unique identifier called an IP address. An IPv4 address consists of four numbers ranging from 0 to 255, separated by periods — for example, 192.168.0.100.

Knowing the Omega's IP address is required for accessing it over the local network. This includes:

  • Accessing the command-line through SSH
  • Accessing a web server hosted on the Omega
  • Transferring files to and from the Omega using protocols like SCP, FTP, and rsync

Procedure to Determine the IP Address​

This procedure relies on the ifconfig utility to find the Omega's IP address. The ifconfig utility is a common Linux utility for monitoring network interfaces and is installed on the Omega by default.

First, determine which network interface to check, and then use ifconfig to find the IP address.

Note

To run the ifconfig command, access to the Omega's command line is required. To connect to the command line either:

  • Use a serial connection: see the quickstart guide for details
  • Connect via the WiFi AP: Connect to the Omega's default WiFi Access Point and SSH into 192.168.3.1, which is the Omega's default IP address on its AP.

Step 1: Determine the Relevant Network Interface​

The Omega has several network interfaces. The interface that should be checked depends on how the Omega is connected to the network:

  • Use apcli0 for connections to an existing WiFi network as a client
  • Use eth0 for Ethernet connections
  • Use ra0 for the Omega's WiFi Access Point
Note

The Omega's IP address on its own WiFi Access Point is set in the network configuration in /etc/config/network. It is not assigned by an external DHCP server.

Step 2: Run the ifconfig Command​

To find the IP address of the Omega on a specific interface, run the following command:

ifconfig <interface-name>

When connected to an existing WiFi network:

ifconfig apcli0

When connected via Ethernet to a network:

ifconfig eth0

When connected to the Omega's own WiFi Access Point:

ifconfig ra0

Step 3: Locate the IP Address​

The IP address will be in the output of the ifconfig command, among other information:

command line output of ifconfig command with ip address highlighted on omega2

Look for the line containing inet addr:. This line shows the Omega's IP address on that network interface.

If that line is blank, the Omega does not have an IP address on that network interface. Double check the network configuration and try again.