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Old 12-01-2005, 09:39 PM   #1
joshfields
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Registered: May 2004
Posts: 16

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gateway setting ./network-scripts/ifcfg-eth1 and ./network


What is the deal with having multiple places to change the gateway?

Please explain the difference in putting Gateway in the interface scripts and in the network file!

What happens if the network file GATEWAY is different than the scripts GATEWAY???



/etc/sysconfig/network-scripts/ifcfg-eth0
GATEWAY=aaa.aaa.aaa.aaa

/etc/sysconfig/network-scripts/ifcfg-eth1
GATEWAY=bbb.bbb.bbb.bbb

/etc/sysconfig/network
GATEWAY=ccc.ccc.ccc.ccc
 
Old 04-29-2012, 04:27 AM   #2
Soji Antony
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Registered: Jul 2010
Posts: 54

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'/etc/sysconfig/network' file contains general information for all interfaces on your system. Like

NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=localhost.localdomain

However this file can be also used as a configuration file for eth0 [instead of ifcfg-eth0 when there is only one interface [NIC] on your system. For example you can remove the 'IPADDR' , 'NETMASK' & 'GATEWAY' entries from ifcfg-eth0 and add it to 'network' file

# cat /etc/sysconfig/network

NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=localhost.localdomain
IPADDR=192.168.1.1
NETMASK=255.255.255.0
GATEWAY=192.168.1.20

After restarting the network, the above IP, netmask & gateway will be assigned to eth0.

But when you have more than one interface card, the individual interface card information's will be recorded in the file ifcfg-ethX in directory '/etc/sysconfig/network-scripts' instead. So if you have more than one NIC, then information for each NIC's will appear in separate files in the directory '/etc/sysconfig/network-scripts' with names of the form 'ifcfg-eth0' for eth0 'ifcfg-eth1' for eth1... etc
 
  


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