Using IP Addresses

The DataDirect Connect for ODBC Wire Protocol drivers support Internet Protocol (IP) addresses in IPv4 and IPv6 format. IPv6 addresses are only supported when connecting to certain database versions, as shown in Table 2-1.

Table 2-1. Supported IP Address Formats 

Driver	IPv4	IPv6
DB2 Wire Protocol	All supported versions	DB2 9.1 for Linux/UNIX/Windows and higher DB2 V5R2 for iSeries and higher
Informix Wire Protocol	All supported versions	Informix 10 and higher
Oracle Wire Protocol	All supported versions
Microsoft SQL Server Wire Protocol (UNIX/Linux only)	All supported versions	Microsoft SQL Server 2005 and higher
Sybase Wire Protocol	All supported versions	Sybase 12.5.2 and higher

If your network supports named servers, the server name specified in the data source can resolve to an IPv4 or IPv6 address.

In the following connection string example, the IP address for the DB2 server is specified in IPv6 format:

DRIVER=DataDirect DB2 Wire Protocol; 
IpAddress=2001:DB8:0000:0000:8:800:200C:417A;PORT=5179; 
DB=DB2ACCT;UID=JOHN;PWD=XYZZYYou  

In addition to the normal IPv6 format, the DataDirect Connect for ODBC drivers support IPv6 alternative formats for compressed and IPv4/IPv6 combination addresses. For example, the following connection string specifies the server using IPv6 format, but uses the compressed syntax for strings of zero bits:

DRIVER=DataDirect DB2 Wire Protocol; 
IpAddress=2001:DB8:0:0:8:800:200C:417A;PORT=5179; 
DB=DB2ACCT;UID=JOHN;PWD=XYZZYYou  

Similarly, the following connection string specifies the server using a combination of IPv4 and IPv6:

DRIVER=DataDirect DB2 Wire Protocol; 
IpAddress=2001:DB8:0:0:8:800:123.456.78.90;PORT=5179; 
DB=DB2ACCT;UID=JOHN;PWD=XYZZYYou  

For complete information about IPv6 formats, go to the following URL:

http://tools.ietf.org/html/rfc4291#section-2.2