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CAS Array mutiple sites. How to configure External DNS

Posted on 2011-09-23
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Last Modified: 2012-05-12
the question i have is.

IF we have two sites that have different external IPSs, both sites are connect by a VPN, and there is an array of CAS. Users conect to mail.domain.com. How do i configure the External DNS so if 1 of the site is down beacuse of power outage mail.domain.com will go to the other site?

Do you use Round Robin in this CAS? OR you have to switch the DNS manually?

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Question by:shawnlevin
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by:Akhater
ID: 36588432
you can either use any kind of Geographical balancing or you need to change the IP in the DNS manually that's way give it a low ttl from the start
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by:shawnlevin
ID: 36588820
so if i have mutiple clients using outlook anywhere connected to site A. I need to manually configure the external DNS so they will connect to Site B?

there is no like DNS failover product that will do it automatically so it will change the dns records to go to site b?
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Akhater earned 1000 total points
ID: 36589927
there are some dns failover services out there but I never used any, part of the failover process i tell my clients to change the external DNS not a big deal
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Author Closing Comment

by:shawnlevin
ID: 37071471
No one answered my question.
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