Re: doubt about lease...

[Shawn Mamros <[e-mail]>]

>I have a small doubt about the lease given by the DHCP server. Suppose
> initially 
>a client gets a lease of 10 hours ( lease requested by the client ) from a 
>DHCP server. Now if the client again sends a DHCPDISCOVER (to the same server)
>before the lease expires ( say after 2 hours ), what lease will be offered by 
>the server? Will it be the remaining lease (in this case, 8 hours) for the 
>same address ot it will again be 10 hours from the current time? 

It depends on the server implementation.  I think most servers will grant
a full ten hour lease, but they're under no obligation to do so.  Some
may provide an eight hour lease; others may allow some more sophisticated
means of setting policy, so that it's up to the administrator configuring
the server to decide how to handle this case (i.e., is it a "one-shot"
lease, or one that can be extended at any time?).

The amount of lease time a server provides is a policy issue, not a
protocol one, and as such is not covered by the DHCP spec.

-Shawn Mamros
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