Which program were you running on your PS2 as you attempted to ping it?
Originally Posted by BoboBlockSheep
If it is a program that does not control the Network Adaptor (Or does use the NA, but just did not initialize the network adaptor), pinging the console will not work.
uLaunchELF does not load the NA drivers unless you access a part of uLaunchELF that uses the NA.
Does the router reflect that the console is physically connected to it (E.g. the LINK light for the port that the console is connected to lights up)?
The network adaptor setup disc is not useful for homebrew software. It is only used for Sony-licensed software.
If you want to configure the NA for use with homebrew software, use a program like uLaunchELF or OPL to do that, or edit IPCONFIG.dat on your own if you know how to.
SCPH-10000 S. MINOKAMO v1.01 (Defunct)
SCPH-10000 S. KISARAZU v1.00 (faulty)
SCPH-15000 S. KOHDA (With warranty seal!) :D
DESR-5100 S. EMCS