Re: Routing problems

Mike (ford@omnicron.com)
Wed, 8 Jan 97 12:54:32 -0500


henning@Prio.no wrote:
> We've been assigned a 32-network, network number
> 194.19.122.160, with IP adresses ranging from 194.19.122.161 to
> 194.19.122.190.
[ ... ]
> We didn't get a broadcast address from our ISP, but I've tried to figure it
> out myself, and set 194.19.122.224 as broadcast. That might be wrong.

Yes, that is wrong. Your netmask is 255.255.255.224 (the bottom 5
bits are zero, corresponding to a 32-address subnet, 32 is 2 to the
5th power). Your broadcast address is 194.19.122.191. This can be
computed as (network_number & netmask) | (~netmask) .

Make sure your netmask is set correctly via ifconfig on all the hosts.
The broadcast address will probably be set automatically to the
correct value once you set your netmask, but you should check it
anyway.

I don't know if this will fix your main problem.

-=] Ford [=-