"route" can be useful also when connecting on multiple networks.
They're in /sbin. There is no path by default pointing there for default users, though any user can run these commands to see their output. I personally always add a path there.
Also try "redhat-config-network" for graphical interface.
There are many useful redhat-xyz tools in /usr/bin. For example, redhat-config-date for changing the system date easily and syncing on time servers.
Look in /etc/modules.conf to know what driver is bound to your network adapter. For example:
alias eth0 e100
Try lsmod to see what drivers are loaded in memory. Your ethernet driver should obviously be loaded (Used by 1).
I hope that helps!