Determine IP address with hostname - RouterNode 3

In some cases, for example, you may not know the address of your RouterNode 3:

  • RouterNode 3 or whether it has received a dynamic IP address via DHCP.
  • RouterNode 3 or whether it has received a fixed IP address via Auto-IP, but the address is no longer known.

Your RouterNode 3 has a hostname.

You can find the IP address using the hostname. For this, you must fulfil one of the following two requirements:

Initial configuration with DHCP

Initial configuration in advance without DHCP (Auto-IP)

  • Active DHCP server present
  • RouterNode 3 connected to network and powered (power supply unit/PoE)

The active DHCP server assigns an IP address to your RouterNode 3. You can then change the configuration in a browser.

  • RouterNode 3 open
  • RouterNode 3 connected directly to computer network port (no switch/router)
  • RouterNode 3 powered (power supply unit or USB-C)

IP autoconfiguration assigns an IP address to your RouterNode 3. You can then change the configuration in a browser.

Auto-IP is implemented according to RFC3927 and uses an IP address from the 169.254.1.0/24 range.

Requirements: The network interface used must be set to Obtain an IP address automatically, otherwise mDNS will not work.

Then use the ping command.

  1. Open the command line (cmd).
  2. Use the ping command and specify the hostname followed by .local as the destination (example: ping SV041FC4.local).
  1. The response is sent from the requested IP address.

The RouterNode 3 supports the mDNS and LLMNR protocols, so you can easily locate the RouterNode 3 on a LAN network using the hostname. These logs are enabled by default, but can also be disabled (see Port and protocol settings). The RouterNode 3 can then no longer be found via hostname.