Is possible to change mask from one ip without stop?

[Carme Torca]

Hi,

I have to change de mask of one ips, now its 255.255.255.192 and it must be 255.255.255.128.... Is it possible to change the mask without stop? Which are the tasks to do?

Thanks a lot of!
Carmen.

[Pete Randall]

Hi Carmen,

I believe it's going to have to temporarily stop because, in order to change the netmask, you will have to delete the route, then re-add it. Have a look at the man page for route.


Pete

[Steven E. Protter]

Shalom,

You need a quick stop/start to make this work.

Either
ifconfig eth0 down
ifconfig eth0 ipaddress netmask 255.255.255.128.

Or change it in /etc/sysconfig/netowrk-scripts/ifcfg-eth0

and

service network restart

SEP

[Pete Randall]

Sorry Carmen - make that ifconfig, not route.


Pete

[Carme Torca]

And how can I do this in hp-ux?
Thanks!
Carmen.

[Pete Randall · Accepted solution]

Well, if you weren't comfortable with the ifconfig command, you could always use SAM > Networking and Communications > Network Interface Cards, then select the interface and, under Actions, click on modify.


Pete

[Marvin Strong]

You can change it the same way as shown above with ifconfig

Also be sure to update your /etc/rc.config.d/netconf file.

ifconfig lan0 down
ifconfig lan0 netmask xxx.xxx.xxx.xxx

man ifconfig for more details.