Round Robin is killing performance on our network
we had 2 windows 2003 domain controllers @ our data center dns , 1 domain controller @ our large remote office no dns. finished replacing 3 domain controllers windows 2012 r2 dc's, each of have dns installed , configured. we're having issues servers @ our data center resolving names using dns server @ remote office due appears round robin dns lookups.
is there suggested way force servers , workstations @ data center use domain controllers @ location dns resolution , servers , workstations @ remote office use domain controller @ location dns resolution?
thanks in advance assistance,
dan
hi dbetanco,
>we're having issues servers @ our data center resolving names using dns server @ remote office due appears round robin dns lookups.
round robin specific record query, example, in dns zone has 3 records:
www.test.com 1.1.1.1
www.test.com 2.2.2.2
www.test.com 3.3.3.3
then if query nslookup www.test.com three times,
first time order is:
1.1.1.1; 2.2.2.2; 3.3.3.3;
second time order is:
2.2.2.2; 3.3.3.3; 1.1.1.1;
third time order is:
3.3.3.3; 1.1.1.1; 2.2.2.2
as use first ip, may use different ip address visit www.test.com each time.
>is there suggested way force servers , workstations @ data center use domain controllers @ location dns resolution , servers , workstations @ remote office use domain controller @ location dns resolution?
to specific dns server address, need check preferred dns server address configured in client's tcp/ip properties. check if address dns server's address that want use.
if clients ip configurations dhcp server, may check dhcp option 006.
besides, round robin can disable:
best regards,
anne
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Windows Server > IPAM, DHCP, DNS
Switching to a load balancing algorithm wooting double movement like Least Connections or IP Hash can improve performance compared to Round Robin by better distributing traffic.
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