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Old 10-18-2005, 02:29 PM   #1
Edwardml
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Disable/Enable network interface


I know this sounds like it should be an easy question, but I can't find the answer anywhere. I can't find out how to turn my wireless card on or off on my laptop...When I have the ethernet cable plugged in, it still tries to use the wireless. Any help?
 
Old 10-18-2005, 02:51 PM   #2
macemoneta
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I switch between wired (eth0) and wireless (eth1) with:

/etc/sysconfig/network-scripts/ifdown eth1
/etc/sysconfig/network-scripts/ifup eth0

to switch back (obviously):

/etc/sysconfig/network-scripts/ifdown eth0
/etc/sysconfig/network-scripts/ifup eth1
 
Old 10-19-2005, 12:59 AM   #3
tkedwards
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just typing:
Code:
ifdown eth0
ifup eth1
will work fine, as root of course.
 
Old 10-19-2005, 04:34 AM   #4
pingu
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...only the routing-table is sometimes not correctly updated (a problem with every distro I tried!)
so eventually you will have to manually edit it: Example:
Code:
[root@killbill peterh]# ifdown eth1
[root@killbill peterh]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
172.16.1.0      172.16.1.36     255.255.255.0   UG    0      0        0 eth0
172.16.1.0      *               255.255.255.0   U     10     0        0 eth0
10.0.4.0        *               255.255.254.0   U     10     0        0 eth1
default         10.0.4.1        0.0.0.0         UG    10     0        0 eth1
default         172.16.1.1      0.0.0.0         UG    10     0        0 eth0
As you can see, even though eth1 is down, it is still default gateway. Delete it with:
Code:
[root@killbill peterh]# route del default eth1
 
Old 10-19-2005, 05:24 AM   #5
tkedwards
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Quote:
...only the routing-table is sometimes not correctly updated (a problem with every distro I tried!)
Are your routes in /etc/sysconfig/network-scripts/route-ethX ? If they're not then they won't be properly deleted/added by the ifup/ifdown scripts.
 
Old 10-19-2005, 11:00 AM   #6
Edwardml
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I knew it had to be something easy. thanks:-)
 
  


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