SPN and SQL Server with multiple instance names

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From: Carlos Selonke (Selonke_at_discussions.microsoft.com)
Date: 02/15/05


Date: Tue, 15 Feb 2005 09:27:01 -0800

Hello

When configuring a SPN for SQL Server using setspn.exe I should use the port
number for SQL Server as noted on the documentation about "Security Account
Delegation"
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/adminsql/ad_security_2gmm.asp

The syntax for SetSPN is:
setspn -A MSSQLSvc/Host:port serviceaccount

With multiple instances every instance will be running on a random TCP port
if not defined on Server Network Utility.

My question is:
What are the best practices (if there is) to configure the SPN for SQL
Server with multiple instances.
Should every instance be assigned a fixed TCP port on the Server Network
Utility and that TCP port is used when configuring the SPN?



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