The service processor network management port is labeled NET MGT. This port is not operational until you configure the network settings (through the serial management port), as detailed in Log In to the SP (SER MGT Port).
If you have access to a DHCP server on the network, you can see the service processor get an IP address because the DHCP client is enabled by default.
Note - The NET MGT port is configured by default to retrieve network settings with DHCP and allow connections using SSH. You might need to modify these settings for your network. Instructions are given in Powering On the Server for the First Time.