Citrix and QoS

[rsenykoff@xxxxxxxxxxxxxxx]

Thanks to all the content from the archives
and the HOWTO, I've got a QoS bridge running, based off the Dante script
http://www.compsci.lyon.edu/mcritch/dante/  --> http://www.compsci.lyon.edu/mcritch/dante/shape.sh.eth0

While we are experiencing a marked improvement
in Citrix consistency, I still feel there is room for improvement. Citrix
sends a LOT of small packets. It is basically a very thin stream. The only
thing I can really see benefitting us more would be to break up large packets
so that Citrix packets don't wait for large packets to complete sending.
 We also run H323, and QoS has helped immensely in eliminating dropped
packets and interference between H323 and the more important (lower priority)
Citrix class.

Would lowering the MTU size be safe
in order to force packets to be fragmented? What kind of negative impacts
should I expect / look for with this? I'm not sure what the packet size
our H323 units use... I guess I could use Ethereal to check it out. May
depend on settings as well.

Any comments appreciated.

Thanks!