Use this command to add a static route for this network 10.3.50.0/24 to use the gateway 10.3.0.1
route add net 10.3.50.0/24 10.3.0.1 1
You must also update /etc/rc because you will lose this route on a reboot. /etc/rc gets read at boot and sets up your network settings.
Use this command to read the file
rdfile /etc/rc
Copy all the text that it outputs. Add your route command under your default gateway. It should look something like this:
hostname netapp01 ifgrp create lacp ifgrp1 -b ip e0a e0b e0c e0d vlan create ifgrp1 3001 3002 3000 ifconfig ifgrp1-3001 `hostname`-ifgrp1-3001 netmask 255.255.255.0 partner ifgrp1-3001 mtusize 1500 -wins ifconfig ifgrp1-3002 `hostname`-ifgrp1-3002 netmask 255.255.255.0 partner ifgrp1-3002 mtusize 1500 -wins ifconfig ifgrp1-3000 `hostname`-ifgrp1-3000 netmask 255.255.255.0 partner ifgrp1-3000 mtusize 1500 -wins route add default 10.3.2.254 1 route add net 10.3.50.0/24 10.3.0.1 1 routed on options dns.domainname domain.someplace.com options dns.enable on options nis.enable off
In order to write your changes to the /etc/rc file, you need to use this command. This command overwrites the file with everything you enter at this point.
wrfile /etc/rc
As a side note, the IPs for your interfaces are stored in the /etc/hosts file.