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DNS Alias [message #307823] Wed, 04 November 2009 11:47 Go to next message
petefisher78  is currently offline petefisher78  United States
Messages: 1
Registered: November 2009
Junior Member
Is it possible, to setup an DNS alias in the same domain, but to 2
different machines, and depending on your location, the alias would
point to a specific machine. What I mean is, we are one 1 domain. We
have 2 DC in both locations and DNS is being replicated between
them. We have an alias pointing to Sharepoint. Sharepoint is being
replicated in real-time in both locations. What we would like is, if
someone tries to get to the alias from pointA, we would like them to
be directed to the pointA server. If someone from pointB tries to get
to the alias, point them to thepointB server. Is this possible, and
if so, how?
Re: DNS Alias [message #323018 is a reply to message #307823] Thu, 19 November 2009 23:48 Go to previous message
Grant Taylor  is currently offline Grant Taylor
Messages: 168
Registered: July 2009
Senior Member
On 11/4/2009 12:47 PM, petefisher78@gmail.com wrote:
> Is it possible, to setup an DNS alias in the same domain, but to 2
> different machines, and depending on your location, the alias would
> point to a specific machine.
....
> Is this possible, and if so, how?

I don't have access to a Windows DNS server to test this on at the
moment. That being said this does work on BIND.

I don't think this will work with an alias (CNAME) but it will work to
have a different IP per location.

1) Remove your existing SharePoint alias (and let it replicate).
2) Create a new sub-domain that is named the same thing as your
SharePoint alias was. - Do not let this sub-domain replicate.
3) Add an unnamed host (A) record to your new sub-domain using the
IP of the local SharePoint server.

Repeat steps 2 and 3 above on your other DNS server.

Now when clients resolve an A record for what use to be a host record in
the parent domain, they will now resolve an A record for a sub-domain
its self.

If that doesn't work, you can do some other ""interesting things so that
the address that your SharePoint alias resolves to is always local. ;)



Grant. . . .
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