[LARTC] Citrix and QoS

[rsenykoff@harrislogic.com]

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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!
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<br><font size=2 face="sans-serif">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/ &nbsp;--&gt; http://www.compsci.lyon.edu/mcritch/dante/shape.sh.eth0</font>
<br>
<br><font size=2 face="sans-serif">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.
&nbsp;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.</font>
<br>
<br><font size=2 face="sans-serif">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.</font>
<br>
<br><font size=2 face="sans-serif">Any comments appreciated.</font>
<br>
<br><font size=2 face="sans-serif">Thanks!</font>
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