Unable to connect to SQL Server using DAC(Dedicated Administrator connection) through SQLCMD (-A)..

Hi All,

I am Unable to connect to SQL Server using DAC(Dedicated Administrator connection) through SQLCMD with the '-A' parameter,however I am able to get the connection through SSMS.

I am using the following string to get the connection 

SQLCMD -S IP,port -E -A

error: 

Sqlcmd: Error: Microsoft ODBC Driver 11 for SQL Server : SQL Server Network Inte
rfaces: Connection string is not valid [87]. .
Sqlcmd: Error: Microsoft ODBC Driver 11 for SQL Server : Login timeout expired.
Sqlcmd: Error: Microsoft ODBC Driver 11 for SQL Server : A network-related or in
stance-specific error has occurred while establishing a connection to SQL Server
. Server is not found or not accessible. Check if instance name is correct and i
f SQL Server is configured to allow remote connections. For more information see
 SQL Server Books Online..

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