[DRBD-user] Ip problems since changes

Dieter Hermanns dh at fraenz-jaeger.de
Thu Nov 20 13:48:58 CET 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


yoyo64 schrieb:
> 
> Thanks a lot for your help
> 
> My eth0: and eth0:0 Ip adresses are mandatory, so I  expect to change only
> eth1: as below
> SVR1: 
>          inet adr:10.100.1.21    Masque:255.255.248.0
> SVR2:
>          inet adr:10.100.1.22   Masque:255.255.248.0
> I found that despite there are on same mask, they are not on same subnet
> (see exemples on internet) 
> 
> - What do you think about this configuration ?
> 
> Add to this, my eth1: are used for drbd purpose (see my drbd.conf below)
> 
> - Can I change without any damage for datas, IP's adress  ? 
> 

there was a misunderstanding!

I meant your eth1 mask not the eth0 ones.

inet adr:10.64.100.118  Bcast:10.64.100.255 Masque:255.255.128.0
                                     ^^^                    ^^^
either this must be 127 -------------+                      |
                                                             |
or this must be 255 ----------------------------------------+

on your 15bit netmask, your broadcast adress must have set all 15 lower bits!


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Dieter Hermanns                Telefon:  +49(0)241 910508 0
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