phpDHCPAdmin demo

[Sten Carlsen]

Almost, broadcast address is always "all-ones" in the host part of the
IP. Should be:

     option broadcast-address 192.168.173.255;
                                          ^^^

Hopefully the arrowheads are still under the 255 when this is received ;-)

Jason Gerfen wrote:
> On Sun, Oct 12, 2008 at 8:47 AM, Glenn Satchell
> <Glenn.Satchell at uniq.com.au> wrote:
>   
>>> Date: Sun, 12 Oct 2008 09:35:50 +0100
>>> To: dhcp-users at isc.org
>>> From: Simon Hobson <dhcp1 at thehobsons.co.uk>
>>> Subject: Re: phpDHCPAdmin demo
>>>
>>> Glenn Satchell wrote:
>>>       
>>>> option broadcast-address can be derived from the subnet declaration?
>>>> It is inherited from that scope - and if the two are different, well
>>>> your configuration is not correct.
>>>>
>>>> subnet a.b.c.d netmask e.f.g.h {
>>>>   option broadcast-address e.f.g.h;
>>>> }
>>>>         
>>> Must have been a long day for you Glenn :-)
>>>
>>> Yes broadcast address can be derived, but it's more like :
>>>
>>> subnet a.b.c.d netmask e.f.g.h {
>>>   option broadcast-address i.j.k.l;
>>> }
>>>
>>> where i.j.k.l = a.b.c.d OR NOT(e.f.g.h)
>>>
>>> Of course, the option subnet-mask should be the same as in the subnet
>>> declaration.
>>>       
>> It was a long day, but you knew exactly what I meant :)
>>
>>     
>
> Like so?
>
> subnet 192.168.173.0 netmask 255.255.255.0 {
>      option domain-name-servers 192.168.173.10, 192.168.173.11;
>      option routers 192.168.173.1;
>      option ip-forwarding on;
>      option broadcast-address 192.168.173.0;
>      option ntp-servers 192.168.173.2;
>      option netbios-name-servers 192.168.173.3;
>      default-lease-time 1800;
>      min-lease-time 30;
>      max-lease-time 3600;
> }
>
> The 'subnet' declaration matches the 'option broadcast-address'
> declaration here and when I tested the new .conf file it worked?
>
> Should I include some error checking to ensure the subnet declaration
> and the broadcast-address (if present) match?
>
> I hope I understood you correctly.
>
>   
>> regards,
>> -glenn
>>
>>
>>
>>     
>
>
>
>   

-- 
Best regards

Sten Carlsen

No improvements come from shouting:

       "MALE BOVINE MANURE!!!"