linux networking problem

[neo123]

hi guys

I AM NEW TO RH LINUX,I JUST INSTALLED RH LINUX 3 ON MY MACHINE,BUT NOW I AM HAVING A PROBLEM WITH NETWORKING,I CAN PING THE MACHINE BUT I CANT PING ITS GATEWAY OR OTHER MACHINES ON THE NETWORK.
CAN U GUYS PLEASE TELL ME WHAT I AM DOING WRONG.

THANK YOU
LEBO

THIS IS MY /etc/sysconfig/network file.

NETWORKING=yes
HOSTNAME=mds.is.org.za
GATEWAY=10.100.22.1

THIS IS MY /etc/sysconfig/network-scripts/ifcfg-eth0 file.

DEVICE=eth0
BOOTPROPTO=none
BROADCAST=10.100.22.255
HWADDR=00:07:E9:32:90:A4
IPADDR=10.100.22.160
NETMASK=255.255.255.0
NETWORK=10.100.22.0
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
GATEWAY=10.100.22.1
IPV6INIT=no

THIS IS MY /etc/hosts file

127.0.0.1 localhost.localdomain localhost
10.100.22.59 maxine.is.org.za
10.100.22.60 mds.is.org.za mds

[Roxoff]

Please, stop shouting.

What do you mean Red Hat Linux 3? Do you mean Red Hat Linux 3 (which was released about 1993/4) or do you mean RedHat Enterprise Linux 3 (a.k.a. RHEL3)? I'll assume it's the latter that you've got, 'cos thats probably easier to get hold of.

What do you mean 'I can ping the machine'? Do you mean you can ping localhost?

Do any of the machines you're pinging have ICMP turned off (a common occurence if they're connected to the internet)?

I know it's a stupid question, but is the LED on for the connection to the hub/switch? Is the light on at the network card end? (You do have a cable plugged in connecting the computer to the network dont you?)

You are aware that /etc/networking gives the hostname as mds, which is given the ip address as 10.100.22.60 in /etc/hosts, but your eth0 card has the ip address defined as 10.100.22.160?

Can you connect to machines through the gateway/out on the internet?

Can you post up the output from running /sbin/ifconfig?