Using DHCP for Radius on a Cable Modem Plant

[Michael Ströder]

Arran Cudbard-Bell wrote:
> 
>> On Aug 21, 2015, at 12:42 PM, Arran Cudbard-Bell <a.cudbardb at freeradius.org> wrote:
>>
>>
>>> On Aug 21, 2015, at 12:34 PM, Alan DeKok <aland at deployingradius.com> wrote:
>>>
>>> On Aug 21, 2015, at 12:18 PM, Michael Ströder <michael at stroeder.com> wrote:
>>>> I'd also like to try to replace ISC dhcpd currently used with LDAP backend by
>>>> FreeRADIUS already running for WLAN access. Any change to set up a plain DHCP
>>>> server with LDAP as backend?
>>>
>>> It's probably possible.  The only consideration is what's in LDAP?
>>>
>>> If you're doing static IPs in LDAP, it's pretty simple.  I don't think there's a standard for doing dynamic leases in LDAP.
>>
>> There's a draft from 99 https://tools.ietf.org/html/draft-gu-dhcp-ldap-schema-00
>> Could follow that.

Yes, references to ManagedSystemElement sounds like that bloated DEN / CIM
stuff. I'm pretty sure you don't want to get into that.

There were even two more drafts for a DHCP-LDAP schema:
https://tools.ietf.org/html/draft-ietf-dhc-schema (March 2000)
https://tools.ietf.org/html/draft-miller-dhcp-ldap-schema

AFAICS the ISC schema is not one of the above.

And MS AD has its own schema. And I also vaguely remember that Novell has
something in eDirectory (maybe almost draft-miller-dhcp-ldap-schema).

I have to dig my harddisk...we should invent another LDAP schema. ;-)

> Or there's whatever ISC is using.  I guess that's better as it'd allow an easy migration path.
> 
> http://www.freeipa.org/page/DHCP_Integration_Design

The ISC schema has schema descriptions for DHCP leases (but they don't use
it). Mainly they develop their new DHCP server "kea" which stores leases into
SQL DBs (DB abstraction layer).

But I'd rather avoid the ISC-LDAP schema. It makes my eyes hurt because it was
simply designed for easily converting an existing textual configuration. So
attributes contain text bloat instead of indexable, searchable information.

I have to look at your leases SQL schema...

Ciao, Michael.

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