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libfreetds0-doc-0.82-12.mga1.i586.rpm

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>The port to which to connect can be overridden using a <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> extended syntax.
			</P
><P
>A port may be appended to the dataserver name:   <TT
CLASS="LITERAL"
><TT
CLASS="REPLACEABLE"
><I
>dataserver</I
></TT
>:<TT
CLASS="REPLACEABLE"
><I
>port</I
></TT
></TT
>.  <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> will attempt to connect to specified port. Please note <TT
CLASS="REPLACEABLE"
><I
>port</I
></TT
> must be a number; a service name is not supported.
			</P
><P
>If you specify <TT
CLASS="LITERAL"
><TT
CLASS="REPLACEABLE"
><I
>dataserver</I
></TT
>\<TT
CLASS="REPLACEABLE"
><I
>instance</I
></TT
></TT
>
			as dataserver during login, <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> will attempt to connect to specified instance.
			Only Microsoft SQL Server instances are supported.  (This server feature was introduced with SQL Server 2000.)
			</P
><P
>Note that other <TT
CLASS="FILENAME"
>freetds.conf</TT
> properties still apply.
			</P
><P
> For the technically curious: each SQL Server <I
CLASS="FIRSTTERM"
>instance</I
> appears on the network as a server listening at a port.  The old way &mdash; and it still works &mdash; is to designate each instance in <TT
CLASS="FILENAME"
>freetds.conf</TT
> as a separate server.  The new <SPAN
CLASS="QUOTE"
>"named instance"</SPAN
> notation, if we can call it that, instead uses the server to discover the port.  The library sends a UDP packet containing the instance name to the server at a <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>well known port</I
></SPAN
>, port 1434.  The server responds with a port number.  <SPAN
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>FreeTDS</SPAN
> then uses that number to connect in the usual way.  
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