Use command in telnet or ssh prompt or in the web page under System Setup --> System Command: remember to press refresh button!
Two outputs of 'free' command:
On Asus wl-500g
Code:
[admin@asus root]$ free
total used free shared buffers
Mem: 13948 12156 1792 0 364
Swap: 0 0 0
Total: 13948 12156 1792
On asus wl-500gx
Code:
[admin@wl500gx root]$ free
total used free shared buffers
Mem: 30156 12104 18052 0 1516
Swap: 0 0 0
Total: 30156 12104 18052
Total: wl500g 14 MByte, gx 30Mbyte; Diffrence free approx.16 Mbyte --> 32 Mbyte is enabled in Asus wl-500gx