internet configuration on CentOS.

avee137 · 05-15-2010, 08:43 AM

I have installed CentOS on my system.When I am trying to activate internet,its not working.I tried to change the mac address to what i use for win7 but CentOS is not accepting that address.It throws error like:"unexcepted mac address".same address works fine with win7 and ubuntu.I am using cable modem for a standalone pc.Please suggest what to do!

divyashree · 05-15-2010, 09:22 AM

Quote:

Originally Posted by avee137

I have installed CentOS on my system.When I am trying to activate internet,its not working.I tried to change the mac address to what i use for win7 but CentOS is not accepting that address.It throws error like:"unexcepted mac address".same address works fine with win7 and ubuntu.I am using cable modem for a standalone pc.Please suggest what to do!

Dont try to change ur mac address , CentOS will automatically recognize your mac .

Do u use centos 5 or previous versions ?

in command mode type

Quote:

#system-config-network

Now The network configuration wizard will popup .

Now delete existing hardwares after clicking on hardware button .

Then click on device and select new > Ethernet > select your ethernet card > forward button > select automatically obtain IP with DHCP > APPLY .

Now check its working or not ,then reply back ..

cola · 05-20-2010, 08:14 AM

Quote:

Originally Posted by avee137

I have installed CentOS on my system.When I am trying to activate internet,its not working.I tried to change the mac address to what i use for win7 but CentOS is not accepting that address.It throws error like:"unexcepted mac address".same address works fine with win7 and ubuntu.I am using cable modem for a standalone pc.Please suggest what to do!

http://www.centos.org/docs/5/html/De...rk-config.html

cola · 05-20-2010, 08:14 AM

http://www.google.com/search?hl=en&q...=&oq=&gs_rfai=

vinaytp · 05-20-2010, 08:53 AM

Hi,

What does /sbin/ifconfig show to you, Can you see something similar to HWaddr 00:21:86:163:76 from the output of /sbin/ifconfig, which is the MAC address.

One more way is to use arp command, In my system it is:

Code:

arp -n
Address                  HWtype  HWaddress           Flags Mask            Iface
172.17.70.1              ether   00:12:da:01:a8:00   C                     eth0
172.17.70.150            ether   00:21:86:16:d4:32   C                     eth0

First row is regarding my Gateway
Second row is regarding my local machine

Hope this helps..