DHCPv6_Pool.Allocation_Methods

[Victor Lyapunov]

Thnx Shawn, this is good to know

I did the initial DHCP_PD tests with a relatively small pool (64 prefixes
and 2 clients) and and I saw incrental address assignment (the server
giving out first, then the second etc).I will perform the tests again with
bigger pool + more clients to get a better understanding.

For DHCP_PD in relay mode do you know on which fields does the ISC bases
its hashing (just DUID?)

Regards

Victor

On Wed, Oct 14, 2015 at 6:12 PM, Shawn Routhier <sar at isc.org> wrote:

>
> On Oct 14, 2015, at 1:07 AM, Victor Lyapunov <victor.lyapunov at gmail.com>
> wrote:
>
> Hello All
>
> For a xDSL deployment we are trying to provide a relative lease stability
> for the CPEs. Effectively to ensure that the subscribers - after the lost
> of DSL sync - receive the same address (especially DHCP_PD since we need to
> avoid having to re-address the CPE's LAN after every lost of DSL sync)
>
> Is there a way to achieve this using ISC? For Kea DHCP server
> (http://git.kea.isc.org/~tester/kea/doxygen/d8/d5f/libdhcpsrv.html)
> it makes mention to a "hashed - allocator" where the server assigns
> addresses based on a hash of the subscribers's DUID (Not sure if Kea can do
> it for DHCP_PD but it seem a very useful functionality)
>
> Is there a way to achive this in ISC DHCP server, namely assign addresses
> based on a hash of a subscribers's DUID (instead of simply iterating
> through the pool)?
>
> Are there any other alternative to achive this "relative lease stability"
> for DHCP_PD?
>
> Best Regards
>
> Victor
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>
>
> ISC DHCP does use a hash to pick the address or prefix to use.
>
> Shawn
>
>
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