Add routing for serial line connection

[Bryan W. Maxwell]

I am not doing a serial line client as you may guess from the subject. I am 
doing a serail line connection to a small pic based webserver. It runs over 
a serail line connection. Ive tried the command route add -net 192.168.2.0 
netmask 255.255.255.0 and get a bad netmask error. I was wondeirng how i 
could correct this. I have already run the command slattach -h -l -n -s 
19200 /dev/cuaa0 and ifconfig sl0 192.168.2.2 192.168.2.3 up, both run with 
out errors. Please help. Thank you in advance. 
Bryan Maxwell