Summary
To improve ICA protocol performance, the following white papers recommend changes to the values for OutBufLength, OutBufCountClient and OutBufCountHost:
CTX101602 – Optimizing Citrix Technology for Operation over Wireless Wide Area Networks
CTX101879 – Choosing and Configuring Devices for Wireless WAN use in a Citrix Environment
These recommendations are intended for wireless WANs only. Modifying these values for users on wireless LANs or non-wireless WANs will negatively impact ICA performance.
Also, please note that the following parameters are only interpreted when connecting to MetaFrame XP with Feature Release 1 or earlier:
When connecting to MetaFrame XP with Feature Release 2 or later, the above parameters are ignored. MetaFrame XP with Feature Release 2 connections should use the following parameters instead:
If OutBufLength2 is increased to 512 as the white papers above recommend but OutBufCountClient2 and OutBufCountHost2 are not modified from their default values, users connecting to MetaFrame XP Feature Release 2 or later will experience unnecessary performance degradation.
More information
For users connecting to any version of MetaFrame Presentation Server across a LAN or traditional WAN, Citrix recommends that these parameters not be included in the user’s ICA file or Appsrv.ini file. The default values offer the best performance across non-wireless networks.
