[comp.sys.sun] Ethernet jammed?

paul@math.ucla.edu (Paul Chang) (01/11/89)

We have a set up here (mathematics, UCLA) with a departmental ethernet
consisting of 4 Sun-3 file servers and some 20 Sun-3 workstations, with
each file server serving 6 diskless workstations.  Recently, our file
servers printed the following error messages on the console randomly:

ie0: ethernet jammed

or 
ie0: WARNING: if_snd full
nd: output error 55

It happened to all file servers, although some more frequent than other.
At worst, one server can complaint 5 or 6 times per day.  It does not seem
to affect the system operations (yet).  Sun people suggest that maybe our
ethernet is really crowded or maybe there is a faulty transceiver
somewhere on the net saturating the net occasionally.  We are puzzled
since the error messages surfaced only recently and we did not add too
many workstation recently.  We will appreciate if someone out there has
similar problems or can point out how to track this type of problems.

Thanks much and happy holidays.

paul

paul@math.ucla.edu