Re: How are you doing DHCPv6 ?

[Randy Carpenter <rcarpen () network1 net>]

Several people have mentioned clustering software. Does any one have any examples of such a thing that supports v4 and 
v6?

We have always used the built in failover in ISC dhcpd, and it works nicely. I don't understand why they felt it would 
not be needed in v6.

-Randy

On Jan 21, 2012, at 12:31, Jimmy Hess <mysidia () gmail com> wrote:

> On Sat, Jan 21, 2012 at 7:03 AM, Bjørn Mork <bjorn () mork no> wrote:
> Randy Carpenter <rcarpen () network1 net> writes:
>  
> Duplicate assignments are not a problem as long as you ensure that the
> client is the same.
>
> Duplicate assignments to different clients also won't be established if your
> standby server has access to an identical lease database  at the moment
> your clustering software determines that the primary server has failed,
> kills the primary, and places the secondary in service. 
>
> A sufficiently long lease duration should also be as good as a static lease, in that case.
> Because all the important details are in the database.
>
> You don't have to have any coordination in the DHCP software;  you just in some cases, need to exclude the DHCPD 
> daemon from simultaneously being active on multiple machines.
>
>
> --
> -JH