Question about leases

[Darren]

David
The client is a Dlink DI 614+ (Not sure if Rev. A or Rev. B or what 
firmware it is running).

Packet traces have been sent to dhcp-bugs at isc.org

The Relay agent is a Nortel Shasta.  I can obtain more information about 
that, if you need to know, from the ISP.

David W. Hankins wrote:

>On Mon, Apr 17, 2006 at 01:18:38PM -0400, Darren wrote:
>  
>
>>Further information.  On the router in question, it appears that it is 
>>incrementing the secs field rather rapidly (or so an ethereal capture 
>>suggests).  The value seems to be increasing as if it is usecs instead 
>>of just secs (as RFC 2131 states it should be).  We saw values like 
>>11200 to  15689 in a one second time period.
>>    
>>
>
>Now I really want to see the packet trace, and anything you can find out
>about the client make/model.
>
>  
>
>>If I set this:
>>
>>load balance max seconds 30;
>>
>>to:
>>
>>load balance max seconds 0;
>>
>>will that cause the DHCP server to ignore that setting and ignore the 
>>secs field?
>>    
>>
>
>No, the fields are directly compared:
>
>        if (state -> load_balance_max_secs < ntohs (packet -> raw -> secs)) {
>                return 1;
>        }
>
>Since 0 is never less than 0, it will load balance the first message,
>then nothing else (any nonzero secs field will get both servers to
>respond).
>
>You could set it to 65536 or greater (state->etc is an int, packet->secs
>is a u_int16_t), but I wouldn't recommend it (you really want both servers
>to answer after a few...sometimes one server can reach the client but the
>other can't).
>
>  
>