diff --git a/perl-xCAT/xCAT/Schema.pm b/perl-xCAT/xCAT/Schema.pm
index bc4d38fa6..201858754 100644
--- a/perl-xCAT/xCAT/Schema.pm
+++ b/perl-xCAT/xCAT/Schema.pm
@@ -1032,6 +1032,8 @@ site => {
    "           virtual network bridge up correctly. See\n".
    "           https://sourceforge.net/apps/mediawiki/xcat/index.php?title=XCAT_Virtualization_with_KVM#Setting_up_a_network_bridge\n\n".
    "               rsh/rcp will be setup and used on AIX. Default is yes.\n\n".
+   " useflowcontrol:  (yes/1 or no/0). If yes, postscripts will use xcatd flow control. If no,\n".
+   "               postscripts use wait and retry. Default is no.\n\n".
    " useNFSv4onAIX:  (yes/1 or no/0). If yes, NFSv4 will be used with NIM. If no,\n".
    "               NFSv3 will be used with NIM. Default is no.\n\n".
    " vcenterautojoin:  When set to no, the VMWare plugin will not attempt to auto remove\n".
diff --git a/xCAT-server/sbin/xcatconfig b/xCAT-server/sbin/xcatconfig
index 00102f048..5d0aa1191 100755
--- a/xCAT-server/sbin/xcatconfig
+++ b/xCAT-server/sbin/xcatconfig
@@ -1243,6 +1243,7 @@ sub initDB
         $chtabcmds .= "$::XCATROOT/sbin/chtab key=vsftp site.value=n;";
         $chtabcmds .= "$::XCATROOT/sbin/chtab key=cleanupxcatpost site.value=no;";
         $chtabcmds .= "$::XCATROOT/sbin/chtab key=dhcplease site.value=43200;";
+        $chtabcmds .= "$::XCATROOT/sbin/chtab key=useflowcontrol site.value=yes;";
 
         if ($::osname eq 'AIX')
         {