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Re: problems with having two DHCP servers...

On Fri, 06 Jan 2012 10:02:45 +1300, Richard wrote in message 

> On 06/01/12 06:57, Rick Thomas wrote:
> > 
> > A limited amount of redundancy is good.  If one goes down, the
> > network can still limp along.
> > 
> > Anyway, that's the theory.
> My understanding is that you need to have some sort of failover setup
> - so the secondary dhcp server only starts working (responding) if it
> detects that the first has failed. It also needs to track all the
> leases that the first has handed out, so it can avoid issuing
> duplicates.

..you also need to decide on your policy issues, e.g. on whether you
want your downed primary server taking over as the primary once it's 
up again, or whether it should take over as secondary|spare until 
your secondary goes down, etc, etc.  Etc. 

> I haven't looked at this in detail, though.

..about 8 years since I did. ;o)

..med vennlig hilsen = with Kind Regards from Arnt Karlsen
...with a number of polar bear hunters in his ancestry...
  Scenarios always come in sets of three: 
  best case, worst case, and just in case.

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