Support Oracle Oracle Database 11g?

Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 and SQL*Plus: Release 11.2.0.2.0 Production and it wont work, SQL plus will connect using something like

sqlplus username/passowrd@ip_address:port/SSID

rather than

sqlplus user/passwd@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(Host=IP or hostname)(Port=port))(CONNECT_DATA=(SID=sid)))

ANy ideas on how to make this work? I cant figure it out …