Hello,
I've been tasked to go through and update our DNS references on a large list of servers and workstations that have been given static IPs
(primarily doing these updates because several older DC's have been demoted, and are still referenced as the primary and secondary DCs in the static configurations).
The list is about 50% good, however I have a question in relation to the best order to reduce DNS lookup and unnecessary WAN traffic.
Scenario:
* All DC's are Global Catalogs from the same domain.
* All branch offices are in the same city/region.
* A full 4 way mesh of connections exist between each office.
Main office :
DC1 (2012, DC Master,DNS,WINS, DHCP)
DC3 (2008) DC, DNS
Branch office A (also acts as main failover location):
DCA (DC, DNS, WINS, DHCP)
Branch Office B:
DCB (DC, DNS)
Branch Office C:
DCC (DC, DNS)
So for the majority of my servers in the Main office, our DC order is DC1, DC3, DCA .
For each Branch office :
A) DCA, DC1, DC3
B) DCB, DC1, DC3, DCA
C) DCC, DC1, DC3, DCA
The question I have is there any benefit for the B,C Offices to have a full mesh of another Branch Office's DC in the list?
ie :
B) DCB, DC1, DC3, DCA, DCC?
C) DCC, DC1, DC3, DCA, DCB?
Is this even necessary ? Is this overkill or is it pointless, since once one DC is reachable it will never query the remainder anyway.
Just curious of the best way of updating all the DNS queries, or if people have suggestions.
