iwconfig settings

[buskmann]

My belief is that I first apply settings to interface like this
iwconfig eth0 mode managed channel 4
then start it like thisifup eth0

Additionally, I have /etc/sysconfig/network-scripts/ifcfg-eth0:DEVICE=eth0
BOOTPROTO=static
IPADDR=192.168.2.98
NETMASK=255.255.255.0
NETWORK=192.168.2.0
BROADCAST=192.168.2.255
ONBOOT=no
MODE=Managed
ESSID=mynet
CHANNEL=4
RATE=11M auto
KEY=xxxx-xxxx-xx

Can I make iwconfig use the contents of /etc/sysconfig/network-scripts/ifcfg-eth0 for configuration?