DNS-load balancing-NCPM on HP-UX

[Edmund]

Where's the URL for the HP NCPM product ??  I couldn't find it.
As far as I know, BIND 8.2.1 let you define the sort order for a
multihomed host (ie. host with more than 1 IP address).

I've heard of lbnamed load balancing, but could it handle heavy
traffic DNS query, is it stable and how's its stability and the
response time affected ????

Laurent Verhoest wrote:

> 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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