Tonight my filer stopped serving NFS over its FDDI interface. Twice.
I called NAC support, got a call back, they had me take the interface down and back up. That fixed it temporarily. It was then reccomended that I disable the tcp extension (of course, it involves some work on the client side as well; joy).
I did it and now it seems to be happier.
My beef with NAC is that the tech guy said that there had been many problems like this, alot of open tickets in the support queue and that the next release of the OS would have the tcp option disabled (as the default; not removed).
Why in the world has NAC not sent out an advisory about this? If it has been causing so many problems, the least they could have done is let us know that it could happen.
Since this is a new filer (f540, 256MB read cache, 8MB nvram, 100GB, 2x100bT, 1 fddi), the problem only affected some setup stuff I was doing. The problem seems worse with fddi than with ethernet connections (my mounts that occured over ethernet were fine while the fddi ones were not).
Anybody from the peanut gallery?
Alexei