DHCP-binding states

Tim Peiffer peiffer at umn.edu
Fri Oct 17 12:54:21 UTC 2008


Free and active are polar opposites.  They are the ends of the 
continuum.  The others fall in the middle.

Free   - Never Used
Backup - In an active/active load balanced environment, backup is an 
address that is free but managed by the peer server
Released - Leased at some point in time, and given back to the pool
Expired - Leased at some point in time, and the client stopped renewing 
for at least 2 lease periods.
Active - Currently in use

Regards,
Tim Peiffer
Network Support Engineer
University of Minnesota/NorthernLights GigaPOP

crashnb wrote:
> Hello dhcp List,
>
> i havt to write a perlscript to check how match ip-addresses are free. 
> but we have a dhcp-server configurated with failover and 
> loadbalancing. want to check the dhcpd.leases file for that, but i 
> don't know what binding state
> free(i think this lease is free), active(i think this lease is 
> assigned), expired, released and backup is. can anybody describe me 
> what this binding states are for.
>
> Sorry about my bad english.
>
> greetings
>
> Manuel


-- 
Tim Peiffer
Network Support Engineer
Office of Information Technology
University of Minnesota/NorthernLights GigaPOP



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