Having
reviewed this thread, I'd like to note that the use of conditional forwarding
for a particular namespace is not, relatively speaking, computationally
expensive. Mere string comparisons do not require significantly more
effort than that of locating a record within the local cache or a local zone
(though I've not personally tested it to that degree, I'd hazard a guess that
it's quite the reverse).
I'll
admit to having not read the afore mentioned links so if I'm dup'ing anything,
my apologies.
Re:
stub zones or cond. forwarding, I generally apply the following rational
when trying to explain an architectural design decision or teaching a class ...
consider the following -
* stub
zones
- fault tolerant
- automated load
balancing
- intelligent distributed
configuration (AD integration)
- self updating
(limited)
- may expire
- no re-configuration required for
target namespace
*
conditional forwarders exhibit
- fault tolerant
- no automated
load-balancing
-
unintelligent distributed configuration (AD
integration)
- not self updating (static
knowledge)
- never expires
- no re-configuration required for
target namespace
I'd
certainly agree with Al's comment that conditional forwarders have their place
when a predictable path of resolution is required since stub zones round-robin
resolution attempts, other than that I personally consider conditional
forwarding a quick and dirty mechanism offering little
advantages.
Dean
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Tuesday, May 10, 2005 6:12 PM
To: [email protected]
Subject: [ActiveDir] DNS Question - Conditional Forwarding or Secondary Zone Stub
I’ve done some reading but can’t seem to surmise the best practice when trying to decide between using a secondary stub or conditional forwarding when both technologies could address a requirement. I’ve a situation for a disjointed namespace where the root servers would hold the zone. Since either secondary stub or conditional forwarding would solve it, what’s the best approach for this?
TIA
-m
