Manually switch authentication dc

Hi All,
Manually switch authentication dc
I have 2 DC's in a location and one DC is down and few systems and not all do not get authenticated from the new 2nd DC.

How can i manually ask it to authenticate from DC2?

Set l shows all Dc's available

thanks
LVL 11
bsharathAsked:
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Life1430Sr EngineerCommented:
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SebastianAbbinantiCommented:
Make sure the both DC are available to the Site in AD Sites and Services. Also make sure that the DNS server address points to both DC's.

Thanks,
S.
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aadi369Commented:
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Mike KlineCommented:
The Dc is cached for 15 minutes after 15 does it still show the downed Dc?
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Life1430Sr EngineerCommented:
I would have removed the IP of 1st DC from DNS server preference on NIC card of client or had redirected via host file to use domain.com or domain to use IP of 2nd DC  if the endpoints are not more in count.


Are you planning to switch on the down DC ?
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bsharathAuthor Commented:
Until we fix the DC 1 issue need these clients to authenticate from DC 2

So via Hosts file what can i do
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Life1430Sr EngineerCommented:
Host file looks something like below
========================================================================
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host

127.0.0.1       localhost
::1             localhost
192.168.10.2   Domain.com
192.168.10.2   Domain
=======================================================================

assuming 10.2 is the IP of your new DC and your Domain name is domain.com I would have added one of above two entries separated by a tab whichever works for me
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