Properly configured UNIX servers run under the TCP/IP protocol, which enables non–UNIX clients to communicate with the server.
There are several entries into the TCP/IP protocol stack. SAP Sybase IQ employs the User Datagram Protocol (UDP). While it is called a transport protocol here and elsewhere, UDP provides little more than a user interface to the network layer IP. In particular, UDP is not a guaranteed transmission protocol.
Although the default packet size for TCP/IP is 1460 bytes, a larger packet size may improve query response time, especially for queries that transfer a large amount of data between a client and a server process. You can set the maximum packet size using the database server command lines or CommBufferSize (CBSIZE) in the client connection string. This option may be used with the start_iq command.