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VRF-VEE_LAN_Problems

Question asked by VRFuser on Feb 10, 1997
send q VRF-VEE_LAN_Problems vrf

from: Greg Goebel / HP-MXD
      gvg@lvld.hp.com / 970-679-3030 / FAX 970-679-5971
to:   VRf-Juan Vera
date: Tuesday, 11 February 1997 0906 MST

> > I have detected some problems using the E2050 LAN/HPIB gateway within VEE in
> > HP-UX environment.
> > Define an instrument which gateway is the E2050 and write a program in order
> > to acquire data in a continuos cycle. While the program runs disconnect the
> > LAN/HPIB gateway from the LAN for a while until the application detects a
> > timeout. Re-connect the LAN/HPIB gateway to the network. The application
> > should reausume the acquisition cycle but it shouldn't. Now the error 920
> > arises and the following errors appear on the hpterm window:
> >
> > ilan <> Error 15, lan_read_1 : RPC_TIMED_OUT
> > ilan <> Error 15, lan_clear_1 : RPC_TIMED_OUT
> > ilan <> Error 15, lan_lock_1 : RPC_TIMED_OUT
> >
> > The only way I found to solve the situation is to quit the VEE environment
> > and start agin VEE, load and run the program.
> >
> > Does anyone a fine way to work around this problem without leaving VEE and
> > re-start.
> >
> > Regards.
> >
>
> Juan,
>
> The solution is simple: DONT DISCONNECT YOUR GATEWAY.
> And if you do, you should be able to restart your VEE-model
> without problem. However, an old session on your gateway may
> block normal operation. Log in to your gateway via
> telnet, and check for such blocking sessions. You can easily
> reboot/reset your gateway if such sessions exist.
>
> Kind regards,
>
> Frank

Juan:

Frank's dead right ... we've been through this one before.  This is a
consequence of the way networking is implemented on HP-UX (or so we have been
told by our lab associates) and there is no way for VEE to figure out that
something has been disconnected.

Sorry about that.  I'll have to document this on our netsite in the proper
place.

[<>] regards -- gvg

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