SNA4—Use SNA4 Data Compression of Command

When SNA4 is in effect, data streams are compressed using SNA Data Compression (3600/4700) if the following conditions are true:

  • The session was bound using session parameters LUTYPE=0, FMPROF=04, and TSPROF=04 (“SLUP” sessions).
  • The session partners are included for SNA Data Compression.

To turn SNA4 compression on or off, use the command subsysid SNA4 | NOSNA4. subsysid is the name of the ULTRAOPT subsystem that was established when the product was installed.

Note

 If you do not use this command, or if you need to use SNA Data Compression on any data streams that do not adhere to the first condition, write a user exit as documented in sample user exit SOPUSERC.

 

  • 4.2
  • 4.2
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