The Question is:
We are getting DECnet Receive failures (~50/hour) on the line for an Alpha
Server 2000 4/275. We have a similar AS 2000 on the network with no Receive
failures as well as two Alpha Station 400 4/233's with no Receive failures.
All ALphas are running DEC
net 4.0.0 and we are routing through a DEChub 900. We recently added some
DECserver 700's to the network. Are the Receive failures indicative of a
hardware problem, tuning problem, loading problem or something else?
Also, the AS 2000 without failures has the "Buffer size" in NCP>SHOW EXEC CHAR
set to 1088 while the other Alphas all have 576. Is there optimal value for
The Answer is :
You likely have a controller or network hardware problem.
The usual solution is to segment the network, in an attempt
to isolate the failing component.
576 is a common setting, though networks with support for larger
circuit transfers will transparently permit larger transfers --
regardless of the host executor setting. (Only if all hosts and
particularly all cicuits in the network support larger buffers
should you increase the executor buffer size setting.)