Help! - Interlan NI-1010A hangs too often

[robert at hslrswi.UUCP]

	Hanging Interlan NI-1010A board on 4.2bsd Vax-11/750
	====================================================

Has anyone had experience of an Interlan NI-1010A Ethernet board
repeatedly hanging ?

This problem seems to happen at random. It has happened a few times out
of the blue for no apparent reason but the easiest way to make it
repeat itself is to do an Rdump down the Ethernet from a remote machine.
This isn't a sure-fire way of forcing it to hang but will do the job
nicely 50% of the time.

When it does happen, all current connections through that board are
lost. The output error count as reported by `netstat -i' climbs rapidly.
Unfortunately, a reboot is the only known solution.

Very rarely, the console also prints the message
	il0:stray xmit interrupt, csr=ffffffd0<CDONE,CIE,RIE>


One further point worth mentioning is that we have installed the fixes
to /sys/netinet/tcp_input.c (circa lines 308 and 390) as recommended by
Andrew Russel of Sun UK (sunuk!ar) and which are supposed to solve a
similar problem (losing connections when rdumping Sun to Vax).  In
practice, though, these fixes don't seem to make any difference.

The system is a (almost) vanilla 4.2bsd Vax-11/750 with 3MB, UDA-50,
RA-80, RA-81, TU-78, DZ-11, VMZ-32 and NI-1010A. The remote machine
(being rdumped) is a Sun-2/120.

If anyone has any idea or knows of the cure for this problem, please
let me know. (If anyone also knows a way of restarting the Ethernet
board without resorting to a reboot, that would also be extremely
useful information).  All help will be very gratefully received.

Many thanks in advance,
Cheers,
	Robert.

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    Robert Ward,						   ___________
    Hasler AG, Murtenstrasse 137a, CH-3008 Bern, Switzerland	   |    _    |
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