Hi Marcus
Stub zones list all name servers for the zone equally - if you have 10 name
servers for the zone, and 3 of those are on T1s while the other 7 are on
28.8 modems, then 70% of your lookups are going to be slow. On the other
hand, if you change the ip address of a name server, your stub zone will
pick it up.
Conditional forwarding lets you specify the 3 fast linked name servers and
all client requests will go to the those three. if you change one however,
you have to change the conditional forwarding record on every DNS server
that has it.
We have a number of sub zones, the top level zone is an AD integrated
Forest Wide zone and contains delegation records for all of our sub zones -
so we only have to change the delegation record in one place for it to
change on every DNS server. That is only an option if the top zone is in
AD and the other zones you want to hit are sub zones of it.
Regards;
James R. Day
Active Directory Core Team
Office of the Chief Information Officer
National Park Service
(202) 354-1464 (direct)
(202) 371-1549 (fax)
[EMAIL PROTECTED]
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| To: <[email protected]>
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| cc: (bcc: James Day/Contractor/NPS)
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| Subject: [ActiveDir] DNS Question - Conditional Forwarding or
Secondary Zone Stub |
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Iâve done some reading but canât 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. Iâve a situation for a
disjointed namespace where the root servers would hold the zone. Since
either secondary stub or conditional forwarding would solve it, whatâs the
best approach for this?
TIA
-m
