Help with Cisco Distributed Director and DNS subdomain

[Joseph S D Yao]

> BIND 8.1.2 - HP-UX 10.20
> 
> I don't know if anyone has experience with these devices, but in a
> nutshell, they are able to load balance based on routing tables.  We are
> going to use them for load balancing across web proxy servers.
> 
> According to the docs, a subdomain http-proxy.my.domain.com needs to be
> setup under the my.domain.com domain with the Distributed Director being
> the master server for that subdomain. 
> 
> The idea is that in a person's browser they would actually point to the
> subdomain as their proxy and the Director will take care of getting the IP
> address to use as the proxy server.
> 
> The example that Cisco gives is this:
> 
> http-proxy.my.domain.com	in	NS dd.my.domain.com
> dd.my.domain.com	in	A	1.2.3.4
> 
> 
> They say that if you do an nslookup a different address should be given
> back each time.
> 
> Any ideas?  I have looked at trying to set up a zone for that, but the
> Directors don't support zone transfers so that would be pointless.  I'd
> like to set up some sort of forward zone that just jumps to the Director
> automatically.
> 
> Thanks.
> 
> Don

No experience, but ... why don't you just try following the
instructions?  No zone transfers needed.  Just put the above lines into
your "my.domain.com" zone file.  Every time someone wants the address
for http-proxy, they find that they have to ask the DD which - if it is
properly configured - will distribute the load in that manner.  And I
am sure the TTL of the names is QUITE low.  ;-)

--
Joe Yao				jsdy at cospo.osis.gov - Joseph S. D. Yao
COSPO/OSIS Computer Support					EMT-B
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