The DHCP *server* does not provide dynamic dns updates to a dns server.
That is done by DHCP client services on the individual workstations.
Since the client knows its own FQDN, and gives that along with the IP
address to the DNS server, the DNS server is going to provide
information for the appropriate name, foo.example1.com,
bar.example2.com, or fubar.example3.com.
My understanding is that a winders DNS server can store its data in
either traditional zone files or actually store the information in the
Active Directory structure itself. Since you're asking questions on the
MultiNet list, however, you're presumably using MultiNet DNS. Since I
don't let clients update either MultiNet or unix DNS servers, I'm not
sure if those servers actually modify the on-disk zone files with
dynamic updates or if they just keep the dynamic stuff in memory. I
would think they would have to write to disk at least periodically, but
that's just a guess.
-ken
Post by m***@gmail.comPost by Ken ConnellyYes, you can certainly have multiple primary domains served by the same
DNS server.
I'll mostly pass on the second part of the question as I don't allow
clients to update what I affectionately call "the real DNS". AD has its
own DNS servers (running on winders), which domain members are told to
use by the DHCP server. Those are visible internally to the domain, but
not to the outside world. That said, from a functional perspective, I
don't know why the zone on the DNS server that was updated would really
matter. Clients are going to ask the DNS server for answers, not a
particular zone server. As long as the authoritative server has the
answers it should have, the zone they came from shouldn't really be a
concern.
- ken
Post by m***@gmail.comCan we have two or more primary zones in the same DNS server. For
example, is managing Cisco.com and yahoo.com within same DNS server
possible? If yes How the DHCP server will update DNS, means whenever
it issues a lease to a client it needs to update the same in DNS
server, so my question is in which zone it will update the A record?
---
Manjunath
--
- Ken
=================================================================
Ken Connelly Associate Director, Security and Systems
ITS Network Services University of Northern Iowa
Thanks for your reply. As we know that client will ask for IP address
from DHCP server whenever it comes to network. Then DHCP server will
give IP address for some period of time (lease). At the same time it
needs to update the DNS server about this lease means it needs to send
host name along with IP address to DNS server. In turn DNS server will
create A record in its zone for this host. So now assume that the DNS
server is hosting example1.com, example2.com and example3.com as its
primary zones. Now the host at example3.com request for a lease and
got it from DHCP server. The DHCP server will send host name and IP
address to DNS server. Now DNS server needs to create A record in
example3.com; My question is how the DNS server will decide that it
needs to create A record for this host in example3.com only, why cant
it be in example1.com and example2.com? I don't know anything about
DHCP, Is any configuration needed at DHCP server side to work like
this? Please clarify me this. Thanks in advance.
--
Manjunath
--
- Ken
=================================================================
Ken Connelly Associate Director, Security and Systems
ITS Network Services University of Northern Iowa
email: ***@uni.edu p: (319) 273-5850 f: (319) 273-7373