CIDR problems?

[Keith Neufeld]

On Nov 2, 2006, at 9:37 AM, Sean Kelly wrote:

> shared-network "..." {
>         subnet 147.147.15.224 netmask 255.255.255.224 {
>                 option routers 147.134.15.254;
>                 pool {
>                         deny dynamic bootp clients;
>                         failover peer "CU-ONE";
>                         range 147.134.15.225 147.134.15.249;
>                 }
>         }
> }
>
> DHCP responds to us with:
>
> Address range 147.134.15.225 to 147.134.15.249 not on net  
> 147.147.15.224/255.255.255.224!
>
> Are the network guy and myself missing something, or is DHCP wrong  
> here? Is
> this a known bug?

Even in a shared-network, each subnet declaration's range still has  
to fit within the IP space of the subnet declaration.  147.134...  
isn't within 147.147... / 255.255.255.224, so you should move that  
range within the correct subnet declaration within that shared- 
network declaration.

Or if it isn't really a shared-network, don't call it one; just  
declare it as a subnet from the get-go, and correct the typo in the IP.

-- 
Keith Neufeld
Lead Network Engineer
Wichita State University