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IP port configuration for servers with more than one MS SQL instance installed.

Posted on 2014-04-15
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Last Modified: 2014-04-15
Hi,

I'm working on a SQL 2012 standard Server.  It's been running a default instance using a specified IP port for some time fine.

Now I have to install another instance on the same server.

Whats the best way to setup IP port configuration?

SHould I set both to dynamic?  Keep the first set to a specific port and set the new one to dynamic or give that a fixed port too?

We have a number of apps that have been working well with the default SQL server instance running a specific port so I'm not that keen to change it...

(For info, the server has one fixed IP address)

thanks.
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Question by:jmsjms
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7 Comments
 
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Expert Comment

by:Carl Tawn
ID: 40001760
If one has a fixed port, i would give the new instance one too.
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Author Comment

by:jmsjms
ID: 40001766
OK thanks Carl.  

Is there any best practise or normally used port?  I'm tempted to give it the next port up from the 1433 default but I'm not sure if it's used already.
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Accepted Solution

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Carl Tawn earned 500 total points
ID: 40001769
When I was a full time DBA standard practice was to put each instance on its own port, usually starting at 65001 and working upwards (arbitary starting point really), rather than leaving any instances on the default port.

1434 is used by the SQL Browser Service, so you shouldn't use it for an instance.
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Author Comment

by:jmsjms
ID: 40001819
If it's not the standard port do you have to put the port in when entering the servername\instance name in sql management studio?
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Author Comment

by:jmsjms
ID: 40001886
The answer is no you dont.  I couldnt connect to the new instance until I reset the windows server firewall.
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Author Closing Comment

by:jmsjms
ID: 40001889
Thanks for your help.
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LVL 52

Expert Comment

by:Carl Tawn
ID: 40001936
No problem. Just a quick note - you only need to specify the port if you have the Browser Service disabled, otherwise the browser service will internally resolve the port number for you.
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