getting eth0 up from command line

dannyk1 · 12-15-2005, 05:41 AM

My interface eth0 is connect to a dsl modem which works fine but...

How do I get eth0 to request a new dhcp address from the command line?

I have been trying things like

ifconfig eth0
ifconfig eth0 up
ifconfig eth0 up dhcp
with no luck.

Restarting the computer seems to defeat the purpose of using linux..

The reason for this is everynow and then the power drops off my modem then the only way to get everything working again is to restart the computer.

abakali · 12-15-2005, 05:47 AM

ifdown eth0
ifup eth0
must select bootp option for renewing new ip

Notwerk · 12-15-2005, 05:50 AM

You can try

#ifup eth0

personally i prefer to restart all networking services with

# /etc/init.d/network restart

Hope this helps

Poetics · 12-15-2005, 06:18 AM

# dhcpcd eth0

sjtushi · 12-15-2005, 08:19 AM

first check #ifconfig eth0
#ifup eth0

dannyk1 · 12-21-2005, 02:35 AM

Thanks guys for the replys.

/etc/init.d/network restart

seems to do the trick.

/etc/init.d/iptables restart helps too.

Notwerk · 12-21-2005, 04:16 AM

BTW...

IFF your eth0 is connected to a "Bridged" DSL modem AND you're using pppoe then you might want to look into:
/etc/sysconfig/network-scripts/ifcfg-%ppp0%
(substitute %ppp0% with your connection name)

setting "PERSIST=yes" (without the quotes) will have the machine re-establish the connection when it's dropped. The down-side is that the machine will keep trying until it gets a connection.