RE: Interesting problem...
- From: "Steve Moffat" <steve@xxxxxxxxxx>
- To: "ISA Mailing List" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 3 Mar 2005 15:54:22 -0400
OK, I can see that happening with the clients if your dhcp is set to
update dynamically, but your servers should have fixed IP addresses,
therefore their A records should never change at all.
S
-----Original Message-----
From: Ball, Dan [mailto:DBall@xxxxxxxxxxx]
Sent: Thursday, March 03, 2005 11:22 AM
To: ISA Mailing List
Subject: [isalist] RE: Interesting problem...
http://www.ISAserver.org
I never thought about it much, because I always thought of the Host(A)
names in the displayed list as being part of the cache. So when I
cleared the cache, it made sense that they disappeared.
I'm not sure what you mean by "DNS application partition", all DCs here
have a DNS server installed on them, AD integrated. Whenever a server
boots up, it inserts it's own entry into the DNS server as a Host(A)
(Not an SRV) record, and whenever the DHCP server passes out a lease, it
adds a Host(A) record for it also. All the entries are then replicated
to all the other DNS servers in the AD. If a client requests an address
that is not in our domain, the request goes to its default DNS server,
which forwards the request to the PDC DNS server, which then forwards
the request to our ISPs DNS server.
I've tried to keep the setup as simple as possible, avoiding complexity
to make things run smoothly. What I can't view easily is the forwarding
cache, which doesn't show up in the MMC, but since it appears to be
working properly (with the exception of one server) it doesn't seem to
be an issue.
So, anyone got any good tutorials on setting up an AD DNS system? I
haven't worked with it enough to say I know it well, clearing the cache
seems to clear up most problems, but in turn knocks a lot of things down
for a couple of hours. I think that if I could find a way to keep the
server entries from being cleared, it would run smoother.
-----Original Message-----
From: Paul van Geldrop [mailto:paul.van.geldrop@xxxxxxxxxxxxx]
Sent: Wednesday, March 02, 2005 17:19
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Interesting problem...
http://www.ISAserver.org
.. wow.
You've got some serious DNS issue going on there.
Clearing the cache means removing all the entries that the DNS server in
question looked up for which itself could not find an entry. The SRV
records etc in the DNS database are not supposed to be affected by this.
Is this server actually part of the DNS application partition ? Or is it
looking up records on other DNS servers for your clients ?
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