Configure.Me.xxx is the default SSID on a factory default AP for ease of initial configuration.
10.154.231.125 is the default IP address of AP WLAN interface propagating Configure.Me.xxx SSID.
AP is running a DHCP server for wireless clients of Configure.Me.xxx SSID. This DHCP server gives IP in 10.154.231.x subnet with AP's IP as the default gateway and DNS server. Pl remember this is a temporary SSID for initial configuration only.
Once your client connected Configure.Me.xxxx, use mobile app or web to visit unleashed.ruckuswireless.com or 10.154.231.125 to do the initial configuration. The initial setup wizard will configure your new SSID and remove configure.me.xxx SSID.
AP's Wired port should have got an IP address from your existing DHCP Server. You are good to access using that IP address too.