Checking DHCP

[Cosmin Neagu]

Well...thanks for the comment. I thing you are right...i will add a pool 
for that ip address, just so it can give me an offer.



Holger Weiß wrote:
> * Cosmin Neagu <cosmin.neagu at omnilogic.ro> [2010-07-08 10:12]:
>   
>> So from what i see on the server:
>> DHCPD: DHCPDISCOVER received from client 0050.56a1.4fbf through relay
>> 192.168.53.250
>> DHCPD: Seeing if there is an internally specified pool class
>> DHCPD: there is no address pool for 192.168.53.250
>>     
>
> Why can't you simply add an entry for 192.168.53.250 to the DHCP server
> configuration?
>
>   
>> I thing that nagios sets the relay agent ip address in dhcp header to
>> be the ip address of the interface from where the dhcpdiscover is
>> sent. Is there any posibilities to control this, i mean to put in
>> that header whatever ip address i want for dhcp relay agent?
>>     
>
> No, because the server uses that IP address for the reply.  That is, if
> you fake the field in question ("giaddr"), you won't get a response.
>
>   
>> Otherwise, i thing nagios cand only monitor dhcp servers on the same
>> lan/subnet.
>>     
>
> check_dhcp's "-u" option works just fine if the server is configured
> appropriately.  (And of course, you could use a "real" DHCP relay agent
> instead of check_dhcp's "-u" option.)
>
> Holger
>
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