Hi, Our campus is starting to switch over to a setup of VoIP for the basic phone services using cisco hardware. The thing is since the QoS was changed to accommodate the VoIP, the NFS of our department went down. After some sys-admin gymnastics I was able to reestablish some functionality of NFS (basically forcing NFS to go through TCP instead of UDP). But NFS over TCP is so slow... Only the SGI (IRIX) clients are affected by the problems, plain Linux box were OK. After some more testing, I was able to make NFS/UDP work for file transfer by adding rsize=4096,wsize=4096 to the mount command but as soon as I would try to do an ls of a directory with a lot of files, NFS would choke again. So reducing the read/write size helped, but not completely. Just this week, I learned that another department has similar problems with Macintoshes. Any one has similar problems or suggestion I can give the network managers. Richard