[comp.unix.aux] ae0: error message

boerner@ut-emx.UUCP (Brendan B. Boerner) (06/17/88)

Has anyone out there received the following message:
  ae0:  overflow NIC reset failed
  ae6_intr:  Receive overflow warning.

I have looked in the man pages for 'ae' and found that it is the
interface to Ethernet.  However this error message is not listed
in the man pages.

The effects of this message range from simply *appearing* harmless to
locking the system.  Here's what I know:  1)  Sometimes it will occur
when I am logged in during the day.  No problem if I am not using the
Ethertalk card.  I can just continue doing whatever it is that I am
doing.  2) It occurs sometime after I go home for the night.  I come
back the next morning and cannot get any response from the console nor
can I Telnet in.  Reboot.  3) It occured yesterday when I was backing
up the hd to a Sun with a 9-track tape drive.  I had to abort the
backup.  Needless to say, I was a bit, 'perturbed' when this happened.

If anyone know what this means and possibly how to fix it, please
let me know.  Thanks.

Brendan
    

cck@cunixc.columbia.edu (Charlie C. Kim) (06/18/88)

In article <3422@ut-emx.UUCP> boerner@ut-emx.UUCP (Brendan B. Boerner) writes:
>
>Has anyone out there received the following message:
>  ae0:  overflow NIC reset failed
>  ae6_intr:  Receive overflow warning.
>....

Yes, I've been waiting to see if anyone else had this problem.  This
happens every time I leave my mac booted for any period of time.  I
believe it happens a result of many closely spaced packets causing the
board to go into a bad hardware state that the driver cannot reset...

The problem is in the driver or the hardware (possibly related to the
EtherTalk card hardware problem reported in some trade journals).

You can restart things by doing issuing the following sequence:
	ifconfig ae0 down
	ifconfig ae0 up
(which leads me to believe a driver fix is possible even if it is
hardware is at fault -- if the overflow reset fails, then just
reinitialize the card).  Doesn't help much if you aren't near the
console though. 

Charlie C. Kim
User Services
Columbia University