"Talman, Knut" writes:

   we have a site running SRSS 3.1.1 on RHEL 4.4 on a Sun X2200 M2. Currently
   there are 12 Sunray 2 connected to the server. The colleagues working on it
   are quite happy with it. 
   Not so our network administrator. He is complaining that the sunray server
   generates massive UDP traffic ranging from 3Mbit/sec up to 16MBit/sec. I
   know that server and client are communicating via UDP for input events and
   rendering commands but that much traffic for just 12 clients?

We have a somewhat-related problem, although volume is not the issue.
Sun Ray 1 has 20% packet loss on simple video.  If we connect via a
private network and that eventually routes over the same wire, or if
we use Ray 2 clients, then we do not have packet loss.  We also have
excellent performance if we wire a $50 Netgear Gb/s (or 100 Mb/s or 10
Mb/s) switch directly into the Ray server.

Networking blames Sun, and certainly the evidence is that Cisco
switches and Ray 1 do not work together.  We've tested the Sun
recommendations to move everything to 100 Mb/s, but packet loss was
unaffected.  We have current firmware and a Sun X4200 Ray server
running Solaris 10.

At 20% packet loss, the Ray 1 is largely unresponsive to keyboard and
mouse actions.  We can "solve" the problem for some users by wiring
through a private network (a "router" with two interfaces).
Suggestions?

-- 
Darrel Hankerson
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