You can check the heartbeat losses by doing a:

lnikcontrol @;status=all which will give you output like:

linkcontrol @;status=all
Linkname: DTSLINK   Linktype: IEEE8023  Linkstate: CONNECTED
Physical Path:              56/56
Current Station Address:    00-60-B0-06-EA-FB
Default Station Address:    00-60-B0-06-EA-FB
Current Receive Filter:     broad(1) any(0) k_pckts(1) x_pckts(0)
Current Multicast Addresses:
 09-00-09-00-00-01  09-00-09-00-00-03  09-00-09-00-00-04
 09-00-09-00-00-06
Transmits no error        52713  Receives no error      2648033
Transmit byte count     5447954  Receive byte count   388961185
Transmits error               0  Receives error               0
Transmits deferred          717  Carrier losses               0
Transmits 1 retry           164  CRC errors                   0
Transmits >1 retry          160  Frame losses              4264
Trans 16 collisions           0  Whole byte errors            0
Trans late collision          0  Size range errors            0
802 chip restarts             0  Receives dropped             3
Heartbeat losses              0  Receives broadcast     2510045
                                 Receives multicast      107126

As Gilles wrote you may have SQE not enabled on your transceivers. If you have
transceivers and they do not have a switch to enable or disable SQE then you
will need to purchase transceivers that support SQE.

Regards

Richard Bayly
Hewlett-Packard Response Centre - Australia

Gilles Schipper wrote:

> I suspect you are having "lack of heartbeat" problems with your DTC's - and
> your HP3000's CPU is being indundated with these "lack-of-heartbeat events"
> which, IIRC, are being logged to a NMLG####.PUB.SYS file - or not.
>
> The way to tell for sure is to re-boot your system and not let any users or
> jobs begin - apart from your own console session.
>
> Look for any activity lights on your disk drives. You should notice
> SIGNIFICANT disk i/o activity.
>
> This is the lack of heartbeat being logged to your nmlg file.
>
> The solution is quite simple - enable heartbeat on the transceivers that
> attach your DTC's to your RJ45 patch cable.
>
> You may be experiencing this problem co-incidentally with a recent O/S
> upgrade or PowerPatch install. I can't recall exactly which O/S or PP
> brought with it a change in behavior of the NM logging process.
>
> Or, this may have absolutely nothing to do with your problem - but I
> suspect it might.
>
> ---------------------------------------------------------------------------
> Gilles Schipper
> GSA Inc.
> HP3000 & HP9000 System Administration Specialists
> 300 John Street, Box 87651   Thornhill, ON Canada L3T 7R4
> Voice: 905.889.3000     Fax: 905.889.3001
> Internet:  [log in to unmask]
> ---------------------------------------------------------------------------