limited number of carp devices?

Hi misc,

I'm building an high availability internet gateway using
openbsd 4.0. On the internet side I need more than 100 ip
addresses. The idea was to build this ip's via CARP devices,
but now it seems that there is some kind of limitation on
the number of working devices. I can build up to 255 CARP
devices and ifconfig is telling me, that all devices are UP
and MASTER. But only the first 50 devices are working and
answering to arp requests. All other addresses are not
accessible and not answering. 

To build the devices I use the following script.

#!/usr/local/bin/bash
i=1
max=70
ip=10
vhid=10
device=10

while [ $i -le $max ] ; do
  ifconfig carp$device create
  ifconfig carp$device vhid $vhid pass test  
    carpdev bge0 10.0.0.$ip netmask 255.255.255.0
  echo "$i  carp$device  10.0.0.$ip  vhid  
$vhid"
  i=`expr $i + 1`
  device=`expr $device + 1`
  ip=`expr $ip + 1`
  vhid=`expr $vhid + 1`
done

btw, pf is still disabled.

Is there a limitation on the maximal number of carp
devices?

Thanks
Peter
-- 
Psssst! Schon vom neuen GMX MultiMessenger gehvrt?
Der kanns mit allen: http://www.gm
x.net/de/go/multimessenger

On Fri, Jun 22, 2007 at 11:27:56AM +0200, Peter Niehues
wrote:
> Hi misc,
> 
> I'm building an high availability internet gateway
using openbsd 4.0. On the internet side I need more than 100
ip addresses. The idea was to build this ip's via CARP
devices, but now it seems that there is some kind of
limitation on the number of working devices. I can build up
to 255 CARP devices and ifconfig is telling me, that all
devices are UP and MASTER. But only the first 50 devices are
working and answering to arp requests. All other addresses
are not accessible and not answering. 
> 
> To build the devices I use the following script.

you can assign more than one address to each carp device.

> #!/usr/local/bin/bash
> i=1
> max=70
> ip=10
> vhid=10
> device=10
> 
> while [ $i -le $max ] ; do
>   ifconfig carp$device create
>   ifconfig carp$device vhid $vhid pass test  
>     carpdev bge0 10.0.0.$ip netmask 255.255.255.0
>   echo "$i  carp$device  10.0.0.$ip  vhid  
$vhid"
>   i=`expr $i + 1`
>   device=`expr $device + 1`
>   ip=`expr $ip + 1`
>   vhid=`expr $vhid + 1`
> done
> 
> btw, pf is still disabled.
> 
> Is there a limitation on the maximal number of carp
devices?
> 
> Thanks
> Peter
> -- 
> Psssst! Schon vom neuen GMX MultiMessenger gehvrt?
> Der kanns mit allen: http://www.gm
x.net/de/go/multimessenger
> 

-- 
    paranoic mickey       (my employers have changed but,
the name has remained)