DB2 Connect User's Guide

Multi Path Channel Support for SNA over ESCON

Multi Path Channel (MPC) support for SNA over ESCON allows a system running IBM eNetwork Communications Server to use an ESCON adapter to create an MPC linkstation to the host. MPC is typically faster than CDLC because:

MPC uses separate subchannels for read and write
MPC is not limited by IOBUF size. Frames are 4K and may be blocked together.

Tests have shown as much as a threefold improvement on an MPC link compared to an ESCON Channel Data Link Control (CDLC) link with an IOBUF size less than 1K. AIX SNA MPC requires ESCON and MVS VTAM V4R4 or later and feature code 4024 of Communications Server for AIX (5765-652). Windows NT systems must use IBM eNetwork Communications Server for Windows NT Version 6.

The following are the Communications Server for AIX PTFs required for MPC:

    APAR #     PTF #    LPP name
 
    IX67032   U449693   sna.books.chdoc
    IX67032   U449693   sna.books.escdoc
    IX67032   U449300   sna.rte
    IX67032   U450027   sna.msg.en_US.rte
    IX65820   U447759   sna.dlcchannel
    IX67618   U449691   mpc.rte
    IX65813   U447758   devices.mca.8fc3.rte

[ Top of Page | Previous Page | Next Page | Table of Contents | Index ]

[ DB2 List of Books | Search the DB2 Books ]