DNS-load balancing-NCPM on HP-UX

[Laurent Verhoest]

Hi all,

By default, when named finds a hostname with several IP, it round-robins
the adresses.

If I am right, there is no other alternative than round-robin (except
disabling it) in BIND.

I know some product do it (lbnamed, written in Perl is one :
http://www.stanford.edu/~schemers/docs/lbnamed/lbnamed.html)

Now, I am currently dealing with HP products (HP-UX 11.00 64 bits).
They support BIND 4.9.7 currently (does anyone know if they plan to
support 8.2 ?).

My question is that :
They have a product to do load balancing : NCPM (Network Connection
Policy Manager), which is avalaible on HP-UX and Windows NT.

In the documentation, they explain that BIND and NCPM dynamically
exchange information for multihomed hosts : BIND sends NCPM the list of
IP to sort and NCPM sorts it based on the policy and returns it to BIND
which can send the answer back.

Now how does named knows it has to talk to NCPM when it meets a
multihomed host ??? Does HP modified the portion of the code dealing
with IP sorting ? Is it a standard feature of named (communicating with
a list-sorting daemon) ?

Thanks for help !

--
Laurent.

Please, send me a copy of your answer to this adress :
mailto:verhoest at seriat.fr


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